THE CULLING TRIAL
71. By far the most controversial decision announced
by Mr Rooker on 17 August was that he had accepted the recommendation
of the Bourne Group that a badger culling trial was a necessary
part of the strategy to develop a sustainable policy to control
TB in cattle. He agreed to the changes proposed by the Group to
Krebs' initial design, including the closed season and the use
of cage-trapping only, and announced that the trial would begin
in 1998 in six of the recommended 30 areas, that is two of the
ten triplets. These initial areas were to be in first Devon/Cornwall,
then Gloucestershire/Herefordshire/ Worcestershire. Mr Rooker
responded to the sensitivities of the issue by stressing that
"badgers are a protected species, and will remain so"
and that during the entire trial, "trapping will only take
place over 2,000 square kilometres - an area little more than
half the size of Cornwall".[207]
He also addressed the concerns of various groups about the openness
of the trial by promising that "internal and external audit
procedures will be put in place to monitor procedures, efficiency
and data quality and completeness" and by establishing new
pages on MAFF's website, giving details of the history of bovine
TB in the UK and information concerning the current strategy to
deal with it.[208]
72. The six areas selected for the first stage of
the trial were in counties with a high incidence of bovine TB
in cattle and badgers based on data up to the end of 1997. The
table below gives detailed figures on the two triplets while figure
3 shows their location.
Table 3
GLOUCESTERSHIRE/HEREFORDSHIRE AND CORNWALL/DEVON
TRIPLETS
| Trial Area | Area (km2) | Number of Cattle Herds | Confirmed TB incidents 1995/7 | Confirmed TB incidents 1997 |
| Hereford/Gloucester Triplet | 286.6 | 316 | 104 | 37 |
| Devon/Cornwall Triplet | 285 | 387 | 101 | 48 |
Source: MAFF statsheet 6.
Immediately after the Ministerial announcement, MAFF's
Wildlife Unit wrote to all known landowners in the two areas to
arrange initial visits. Once permission had been received (participation
in the trial is voluntary), officials could begin to survey the
area for badger activity. Surveying started in both areas on 28
August 1998, in line with the Bourne Group's proposal that the
two triplets should be up and running by the end of the year.
By mid-October, however, it had become clear that surveying was
slower than had been hoped, the difficulty being attributed by
MAFF to the unfavourable terrain in the Gloucestershire/Herefordshire
triplet. In view of the approaching closed season, resources were
switched from there to Cornwall in order to allow at least one
of the areas to be implemented.
Figure 3
Location of first two triplets
Source: MAFF PN 337/98.
73. On 4 November, the three areas within the Cornish
triplet were randomly allocated between the three treatments but
the result was not divulged until a week later when Professor
Bourne agreed that surveying, hampered by heavy rain, was "almost
complete" and the proactive cull had to begin.[209]
Cage traps were sited in the Putford area on 16 November and were
pre-baited with peanuts from 23 November to allow the badgers
to become familiar with their presence. Traps were then set and
trapping continued over twelve nights from 1 December to 13 December.
238 badgers were captured and shot and their carcases submitted
for post mortem and laboratory testing, the results of which are
not yet known. There will be a follow-up cull in Putford after
the closed season ends and then further culling at 12 month intervals
to keep the area clear from badgers. [210]
No activity has taken place in the reactive area (Hartland) where
badgers will only be culled after a herd breakdown and out of
the closed season, or in the no culling area (Bude). Surveying
in the Gloucestershire/Worcestershire/Herefordshire triplet is
still continuing, although we had been told by MAFF that this
would be completed in February 1999.[211]
However, the Bourne Group has made progress in identifying the
next triplet, which will be in East Cornwall.[212]
74. It is immediately clear that the timetable for
the trial has slipped appreciably. Krebs recommended that the
trial should begin in Spring 1998,[213]
while Professor Bourne told us that "we suggested we would
put two in place in the first year, that is, by January of this
year. Then eight in place during 1999".[214]
The advice given to us by MAFF is that "we would like to
enrol four more this year, but I think we are doubtful about our
ability to start trapping in all of them; and we would like to
bring in the remainder next year".[215]
Therefore, the ten triplets now look as though they will not be
in place until the end of 2000, more than a year and a half after
the date proposed by Krebs. This has obvious implications for
the length of the trial. The delays in implementation carry
the danger that the trial will have to continue for seven years,
two years longer than the period which was already causing such
concern to farmers.[216]
As the RSPCA commented, "Evidence to date indicates that
even the more phased introduction of the experiment is experiencing
considerable operational difficulties. This does not engender
confidence for the future operation of the trial, the timescale
in which significant results might be obtained or even whether
such results might be produced".[217]
75. The commencement of the culling trial has by
no means ended opposition to the policy. While arguments over
the principle and necessity of the trial have been decided in
favour of proceeding, there remain many objections to the means
by which it is being implemented and doubts such as those expressed
above by the RSPCA about whether it can achieve its aims. These
centre around the fact that this is science conducted in the field.
As one badger group put it, "The trial design tries to impose
laboratory conditions on the wider countryside", thus rendering
it "unworkable".[218]
Professor Krebs accepted that "it is certainly going to be
the case that the experiment will not be as clear as it would
be if it were a laboratory experiment in a laboratory in a building".[219]
Professor Bourne too recognised that "a field trial cannot
have the precision of a laboratory experiment", but he argued
that the factors which were likely to affect this precision had
been taken into account.[220]
This is the crux of the matter: the extent to which the design
of the trial is sufficiently robust to withstand imperfections
in and disruptions to its implementation. We examine below each
of the obstacles faced by the trial, followed by an assessment
of the statistical power and thus scientific rigour. The NFBG
usefully divided these obstacles into "practical problems"
and "the failure to implement key procedures in the trial".[221]
Practical problems include the design of the trial, trapping efficiency,
non-compliance by landowners, interference by animal activists
and illegal culling by farmers. Procedures include resources,
auditing and calculation of badger densities.
i. Trial design
76. The changes made by the Bourne Group to the design
proposed by Krebs have largely been accepted as beneficial to
the feasibility of the experiment. However, doubts were expressed
in evidence to us as to the difficulties in defining and maintaining
boundaries between the different treatment areas within a triplet.
English Nature foresaw "considerable difficulties in delineating
the boundaries of such an area where it needs to follow the boundary
of badger social groups", a point also made by the NFBG.[222]
The Craven Badger Group raised the further issue that unless badger-proof
fencing was installed between the areas, "there is very likely
to be movement of badgers from one area to the next" which
would distort results and perhaps lead to the introduction of
infection as healthy badgers were replaced by infected ones.[223]
We note in this context that the effect of perturbation on badger
social groups is one of the projects funded by MAFF in the current
financial year. Questions were also raised about the large number
of variables between artificially defined areas in the natural
countryside. Some witnesses argued that difference in territory,
farming practices and innumerable other factors would affect the
comparability of the areas and defeat the attempts to provide
a control for the experiment.[224]
77. A further point raised concerning the design
of the trial was the justification for including a proactive treatment.
The Minister has already clearly stated that he would not implement
a policy of eradication so badger groups such as that from Herefordshire
questioned "what valid reason is there for conducting the
experiment at all?"[225]
This view is understandable but it mistakes the purpose of the
proactive area which is to provide one extreme against which the
reactive and control treatments can be measured. It is therefore
essential to the trial design and to the aim of obtaining a good
quantitative estimate of the force of infection arising from badgers.
Although many witnesses claimed that the design of the trial
was flawed, we have not been persuaded by their criticisms and
feel that many of the protagonists have been irresponsible in
using the term in a misleading manner. We are concerned about
the logistical aspects of reducing the statistical power but in
no way could we discover that the trial was scientifically flawed.
ii. Trapping efficiency
78. It is important to the success of the trial that
as many as possible of the badgers in the proactive area are caught
and removed. For this reason, both Krebs and Bourne laid some
emphasis on employing the most efficacious acceptable capture
method. The Bourne Group accepted that public perceptions of cruelty
to animals would not permit the use of snaring which has a capture
efficiency of 90-100% and that instead cage trapping alone at
an efficiency rate of up to 80% would be used. Several witnesses,
mainly animal welfare groups anxious to stop the trial at all
costs but also the Farmers' Union of Wales, argued that the use
of cage-trapping "is unlikely to ensure a capture rate which
maintains the integrity of the culling trial".[226]
This view was apparently supported by data released on the MAFF
website concerning the proactive cull in Putford which indicated
that 238 badgers were caught there, less than half the number
predicted. The RSPCA concluded that "either the general figure
for badger density was not applicable for the situation in the
Putford area or MAFF staff have failed to capture a lot of badgers".[227]
The Bourne Group and Dr Chris Cheeseman, a scientist from Woodchester
Park who was involved in observing the trial, denied both charges.
Professor Bourne told us that the figure of 500 was "an estimate
provided by MAFF staff which we considered and rejected",[228]
while Dr Cheeseman explained the figure referred to the number
of traps set rather than badgers likely to be caught: "the
rule of thumb is you use twice as many traps as you expect to
catch badgers".[229]
The number caught "was actually in line with the estimates
that were made by myself and a member of the Bourne Group, Dr
Woodroffe" and, although on the low side of badger density,
"you have to remember that Putford has actually been culled
in the past, and it is very difficult to estimate at what level
the badger population is on its recovery phase". The NFBG
reported that it had "been reliably informed that there is
still significant badger activity in the area".[230]
However, this in itself is not surprising as it was always expected
that a certain number of badgers would escape culling, hence the
need to revisit the area on a regular basis.
79. A related area of difficulty is that posed by
the ban on culling between the end of January and the end of April,
imposed by concerns about the welfare of badger cubs if their
mothers were caught and killed. The Bourne Group considered that
"a closed season would not cause problems for the efficacy
of the proactive strategy as regards the initial cull", although
it had potentially "a greater impact on the efficacy of the
reactive strategy" since culling could be delayed for some
time after a herd breakdown had been identified.[231]
The RCVS thought that for this reason the policy "will undoubtedly
delay the eventual completion of the trial and should be re-examined".
The backlog in reactive culling would "undermine the confidence
of the farming community and could lead to increased illegal badger
removal by farmers".[232]
On the other hand, the badger groups argued that the closed season
was still too short, leaving an estimated 2,300 badger cubs to
starve underground in the proactive areas alone.[233]
The NFBG argued "we do not believe that, as the detail of
the cull becomes more widely known, the wider public will tolerate
this cruelty".[234]
There have been no official estimates of the number of cubs likely
to be affected. As the RSPCA noted, both this and "the potential
welfare benefits of having such a closed season will only be realised
if the cubs are caught in the trapping operations when they resume".[235]
They suggested that this should be monitored closely by the Bourne
Group. We agree and we recommend that the number and age of
cubs and lactating sows caught in culling operations after the
closed season be monitored to assess the efficiency of the closed
season policy.
iii. Non-compliance
80. By far the most frequently raised obstacle to
the successful completion of the trial was that of non-compliance.
MAFF has no powers to compel landowners to participate in the
trial or to allow Wildlife Unit staff onto private property for
surveying purposes. This has the potential to compromise the trial
by making it unworkable if non-compliance is widespread and by
providing havens for badgers where it occurs on any scale. Non-compliance
could also take the more active forms of interference with the
traps by animal activists or illegal killing by farmers. The latter
has raised most fears among witnesses, being cited as "the
greater concern of the forms of non-compliance" by the Wildlife
Trusts, and a "major source of concern" to the RSPCA
who believed it would render "the results of the trial worthless".[236]
The NFU considered in general that "the effectiveness of
the random culling trials will depend on achieving as near as
possible to 100 per cent participation".[237]
81. The Bourne Group was prepared for the possibility
of resistence to the experiment by individuals. In their first
report they admitted "non-compliance on a large scale would
have serious consequences for the interpretation of the trial
data".[238]
It would have been impossible for them to predict in advance the
likely level of non-compliance. However, some months later and
with the experience of the Putford cull, some observations can
be made, although they are subjective and open to interpretation.
First, on the non-compliance of landowners, the NFBG told us that
as a matter of policy "the Wildlife Trusts, the Woodland
Trust, the RSPB, other nature organisations and some private landowners
have already confirmed that they will not allow culling on their
land".[239]
This was confirmed by the head of the Wildlife Trusts.[240]
However, the evidence is that in Putford non-compliance has been
very low. The NBA told us that "only 80 per cent of the land
is trappable, due to owners not agreeing for such action to take
place",[241]
but the NFU suggested that "of the landowners who refused
to partake the vast majority were one and two acre landowners
and 99 per cent of the farmers are co-operating with the trial".[242]
Professor Bourne too assured us that "Non-compliance has
not been a feature with the Cornish triplets. We have had a very
high level of compliance with farmers".[243]
There is a particular difficulty as the nature of the trial requires
that the wishes of an individual landowner cannot be taken into
account in deciding on treatment areas because of the randomisation
process. Therefore, organisations such as the Soil Association
whose members wish to keep TB-free badgers on their land have
to opt out of the trial to ensure that they are not forced to
allow culling.[244]
We understand this view but conclude that the wider interests
of the farming community must be to co-operate fully with the
trial. We are less sympathetic to the attitude taken by the Wildlife
Trusts whose position demands that they act responsibly on such
issues and we urge them to consider what message their non-compliance
sends to others for whom non-compliance with the trial would take
different forms such as illegal culling of badgers.
82. Secondly, on the question of interference in
the trial by badger activists, there are indications that this
has occurred in Putford but probably not at levels that compromise
the trial. The NFBG, who are advising their members to "take
no action which is illegal",[245]
reported that "badger traps [had been] destroyed and/or removed"
and that "badgers have been released from traps in the first
culling area of the trial".[246]
Meanwhile, Dr Woodroffe of the Bourne Group told us that "There
were some badgers released by Animal Rights activists but that
is quantified, so we know how many were caught and then released".[247]
We conclude that this is unlikely to pose a severe threat to the
trial. We recognise the concerns expressed by one badger group
that "unscrupulous individuals could well take advantage
of conveniently caged badgers" for use in badger-baiting.[248]
Such activities are of course illegal and we ask the Bourne Group
through MAFF for reassurance that all traps are checked sufficiently
regularly to prevent this occurring.
83. Illegal killing of badgers presents a far greater
threat in terms of scale and of effect on the trial. The NFU and
the TFA both assured us that they "would in no way condone
the illegal killing of badgers".[249]
They were offering advice to their members on co-operation and
the NFU claimed that farmers "are co-operating with the cull
better than ... expected ... even in the control area where no
badger culling is taking place".[250]
It is in these areas that the problem is most likely to arise
as the farmers have little direct incentive to participate in
the trial when no action is being taken directly to deal with
any herd breakdowns on their farms. We can see that in these circumstances,
particularly if the experiment is extended over a long timeframe,
farmers may be more inclined to take illegal action against the
badgers in order to protect their livelihood as they perceive
it.
84. Although we are sympathetic to their plight,
we join the farmers' unions in condemning such action and we would
expect the authorities to take severe action in any case where
such illegal activities had been discovered. The NFU, the CLA,
the Farmers' Union of Wales and the RCVS all suggested that extra
compensation should be paid to farmers in these areas as an incentive
for co-operation.[251]
We understand that this is the case in the farms bordering the
Woodchester research centre where payments of 125% of market value
are made available to cover consequential loss.[252]
We return to this subject below. As regards the effect of illegal
culling on the trial data, Professor Bourne assured us that he
"would have some idea if illegal killing was being carried
out",[253]
presumably through surveying. However, the RSPCA doubted that
"the arrangements for surveying - whether initial or subsequent
- will be adequate to measure the extent and impact of any illegal
culling".[254]
English Nature recommended that the Bourne Group gathered what
information it could about the scale of the problem.[255]
We agree that this should be done.
85. Professor Krebs explained to the Committee that
"it is not really in the interests of those who want to find
a sustainable policy for the future to disrupt the trial. If,
for example, farmers are tempted to cull out badgers in the control
areas and take things into their own hands, the implication of
that would be that, after a period of years, the trial would show
no difference between the removal areas and the control areas.
MAFF would conclude that removing badgers was not an effective
way of controlling the disease, so farmers would be stuck with
a conclusion that may be inappropriate but was nevertheless shown
by the experiment. Equally, if the wildlife and conservation groups
believe that the badger is completely innocent, as some of them
do, then this is a way for them to gain incontrovertible evidence
that the badger is completely innocent and the debate will then
close."[256]
We agree with this analysis but the fact remains that many
groups will not co-operate unless they can be convinced that the
trial can produce reliable data. For this reason, it is essential
that the Bourne Group can satisfy itself and hence interested
observers that the trial can be completed within a reasonable
timescale and that the results will be statistically sound.
iii. MAFF resources
86. One of the practical elements which will determine
the feasibility of the trial is the resources devoted to it by
the Government. The relocation of staff from the Gloucestershire
triplet to Cornwall last October seemed to bode ill for the ability
of MAFF to implement the plan laid down by the Bourne Group. It
is accepted by the Group that the delays in the field have been
caused by "a problem of logistics with respect to getting
wildlife staff in place and giving them the appropriate training".[257]
MAFF officials echoed this, admitting that the speed of implementation
depends "essentially upon our ability to bring in the wildlife
teams to operate in those areas, and the most important single
constraint is actually recruiting and training the staff who will
carry out the work on the ground".[258]
MAFF has 54 fully-trained staff at the moment and "it takes
about six months to get somebody fully competent in the field
skills necessary to carry out the trapping and the surveying;
it is quite a demanding job."[259]
We do not dispute this, and we would stress the importance of
ensuring that all staff involved in the trial are fully trained
in the necessary skills. We are concerned, however, that the need
for more staff was not recognised and addressed before last December
when an advertisement appeared in various publications. This,
together with Professor Bourne's remark that in Putford "there
were probably more staff at that particular time than we needed",[260]
implies that MAFF had failed to adequately consider the resource
implications of the trial. We accept the Minister's argument that
this was a new experience for MAFF but it is still a matter of
some concern that the trial should have been so delayed for this
reason. More staff will be needed as the trial progresses both
for enrolling new triplets and resurveying and culling in the
established one. Professor Bourne said he was "reassured
that the necessary amount of cash is there for the fieldwork"[261]
and that the Ministry had "met every challenge thus far that
we have put to them".[262]
In the light of the time needed for training new staff and our
deep suspicions that the trial may not be completed on schedule,
we recommend that MAFF publish its forward projections of the
number of staff it will need to complete the trial within the
five year period and how it proposes to meet this requirement.
87. The problem of staff resources has been revealed
because of the stage reached by the trial before the start of
the closed season. The ability of the laboratories to cope with
the number of carcases from badgers and other wildlife samples
remains untested. Professor Bourne raised this matter himself,
although he was not concerned about it.[263]
Mr Scudamore, the Chief Veterinary Officer, on the other hand,
admitted that "the resources are not only the wildlife people
collecting the badgers, it is also the laboratories examining
the badgers, and that can be a constraint".[264]
He also admitted that it would be "quite difficult to increase
that particular resource in the laboratories". We have already
seen how this constraining factor has had an effect on the willingness
of MAFF officials to implement the road traffic accident survey.
The difficulties of dealing with the workload caused by the trial
are likely to become much more severe as the next triplets are
recruited, and the continuing public acceptance of the trial will
be badly dented if no information becomes available due to the
inability of the laboratory service to conduct the post mortems
and release data either to the Bourne Group or more widely. We
recommend that MAFF address this issue as a matter of urgency
and publish an analysis of the impact of the culling trial upon
the existing laboratory resources.
iv. Auditing
88. The Bourne Group recommended to Ministers last
July that there should be three separate audits of the trial to
ensure that it was properly conducted. These should be a MAFF
internal audit to check that staff closely follow the standard
operating procedures at every stage of the trial; an external
audit to check how efficient the culling is within the limitations
imposed and a further external audit of data quality and completeness
some months after the trial is commenced. As the Bourne Group
recognised, these were essential to the proper conduct of the
trial.[265]
They would also go some way to reassuring observers that the trial
was being conducted in a humane fashion and was likely to achieve
its goals.
89. In fact, the trial began before these procedures
and checks were in place. Standard operating procedures were drawn
up by MAFF and approved by the Bourne Group for use by the officials
carrying out the trial,[266]
but the extensive auditing programme described by the Group had
not been established. A contract was put out to tender on 30 October
1998 and on 15 March 1999 Cresswell Associates of Stroud, Gloucestershire,
were appointed as external auditors to check field operations.
Their contract runs only until November 1999 when a further invitation
to tender will be necessary.[267]
This delay has caused concern to many groups, including those
who would support the trial. The RSPCA commented that the external
audit would have helped with the bad publicity on the number of
badgers caught in Putford by offering reliable information, while
the NFBG expressed the opinion that in the absence of "independent
external auditors, which should have been in place from the start
... there were no welfare checks. There were no checks on the
ability of the people to do the work".[268]
Professor Bourne told us that "we did carry out our own audit,
following the trapping procedures, on the basis of the area"
and that "we were also reassured by our own internal audit
that the trapping efficiency was even higher than we could have
expected".[269]
However, this is no replacement for external checks. We agree
with the Wildlife Trusts that "monitoring, quality control
and continuous evaluation [are] essential" and that "many
components key to the monitoring programme are far from being
in place".[270]
We recommend that MAFF publish an account of how and when it
met the requirements of each of the three monitoring processes
recommended by the Bourne Group for the first triplet and how
these processes will be applied in the second, third and subsequent
triplets.
90. A particular type of auditing absent from the
trial is an environmental audit on the ecological effects of removing
badgers on this scale. The Bourne Group commissioned a desk study,
the executive summary of which was attached to the report, but
no full scale study has been undertaken. The Countryside Council
for Wales (CCW) were insistent that "it is unacceptable
to commence such a trial involving culling of a protected species
before an Environmental Impact Assessment has been undertaken".[271]
English Nature agreed: "the ecological `knock-on' effects
of large-scale badger removal are unknown, and we believe that
the Ministry has a responsibility to undertake a programme to
monitor the wider ecological effects of the trial".[272]
MAFF told us that "it was too early to mount a full environmental
impact assessment before the cull was to take place. But there
is going to be a full environmental impact study of the effects
of proactive culling, which will be done on the back of the trial,
as the triplets are recruited".[273]
Although existing evidence suggests that badger removal is
unlikely to have adverse ecological consequences (see paragraph
23 above), we support the environmental impact study that is now
underway and we recommend that it be made public as soon as it
is completed.
v. Badger densities
91. The CCW were also highly critical of the commencement
of the trial before methodologies for assessing badger density
had been resolved which they regarded as integral to the trial
protocol.[274]
As English Nature pointed out, it was necessary to know the proportion
of badgers removed in order for this to be included it in the
analysis of data. They were concerned that "it may not be
possible to carry out the required fieldwork to the high standard
required" with the inevitable result that "there would
then be pressure to extend the trial by culling more and more
badgers in an attempt to reach a statistically-valid conclusion".[275]
Dr Woodroffe agreed that "there is no validated technique
currently for estimating badger numbers in the field without catching
them".[276]
However, the Bourne Group had few concerns about the impact of
this upon the trial. They had made no formal estimate of the badger
population in Putford but they were satisfied that they had caught
a high proportion during the trapping operation. The MAFF research
proposals include a project to develop new techniques of estimating
badger density. This would be helpful to the trial but we accept
that it is not essential to know exact densities of badgers, only
that numbers have been greatly reduced in the proactive areas.
The statistical power of the trial
92. The factors described above all affect the efficacy
of the trial and therefore its statistical power. The extent to
which they prove disruptive has to be built into the calculations
of the Bourne Group on whether the trial can succeed. The Group
clearly has been persuaded of this but the question still deserves
careful examination here as it lies at the heart of this whole
inquiry. Our first observation is that the Bourne Group are overseeing
a "trial" not an "experiment". This is not
mere semantics. The distinction is that a trial aims to test the
practical utility of a methodology whereas an experiment aims
to test a scientific hypothesis. The culling trial is a trial
because its function is primarily to test the cost-effectiveness
of badger culling as a means of reducing the frequency of TB breakdowns
in cattle, and only secondarily to test the role of badgers as
a reservoir of infection.
93. Once this distinction is appreciated, most of
the criticisms that have been made of the trial can be put in
context. For example, factors such as sabotage by animal rights
activists, inability to capture all the badgers in the culling
areas, and farmers refusing access to their land will not render
the trial invalid: they are simply part of the field conditions
that the trial is intended to incorporate. Any culling strategy
developed out of the trial would have to include all these factors
as part of its implementation in the real world. Most of the
factors discussed above therefore have little impact on the successful
running of the trial. The one exception is illegal culling of
badgers. This is the only factor which could result in the trial
failing to show that culling is a practical way of reducing the
incidence of TB, when in fact it would be. It is therefore extremely
important to encourage the co-operation of farmers in the control
areas and also to monitor the control areas periodically to assess
the incidence of killing, as we have recommended above. The use
of mortality tags to estimate the level of illegal culling should
be further investigated. However, we believe that this is a theoretical
rather than a practical problem at this stage as we accept the
evidence that the various forms of interference and non-compliance
already referred to have not in fact been a major problem in the
culls so far carried out. Given sufficient resources from MAFF
to ensure that the fieldwork and laboratory analysis are carried
out in good time, there is no reason to believe that the trial
cannot be implemented.
94. The factors we have described along with many
others have an impact on the power of the trial or its ability
to achieve a reliable result in a given time. Our major concern
is that the combination of the many logistical problems, including
trapping efficiency, non-compliance and the closed season, will
act to reduce the power of the experiment and hence the robustness
of the trial as originally conceived. These factors may well vary
between trial areas and vary during the time course of the experiment.
Moreover, it is neither clear to us what is defined as a "breakdown"
nor how one determines what are independent breakdowns to insure
against double-counting. As such, it is essential that power
analysis is undertaken as the trial proceeds and more data becomes
available. In this respect it is necessary for the Bourne Group
to undertake regular power analyses, which should be verified
independently by an expert, and to keep the Minister informed
of the relative strengths and weaknesses of the trial. This is
an essential component of the study and sufficient resources should
be available to ensure it is undertaken regularly, preferably
quarterly. We also recommend that the original data behind the
power analysis conducted by Dr Donnelly from the Bourne Group,
from which she concluded that the trial required ten triplets
and should take five years, be verified by an external expert
and the results of this check be made publically available. There
is no flaw in the trial as such but these weaknesses could influence
the confidence of the results and the clarity of any final policy
decision.
95. The key question is whether the trial should
go ahead or whether as has been suggested to us it should be abandoned
or at least suspended until doubts about its power or procedures
have been resolved. Professor Krebs argued strongly for its continuation:
"I still believe that there is no alternative way forward
in relation to badger culling or non-culling that can be justified.
It is not justified to stop, it is not justified to do a mass
cull because the evidence is not there, so if MAFF decided to
abandon it, then they would be in great difficulty because they
would have to start all over again with a further inquiry and
I do not believe that is appropriate".[277]
We agree. The lessons of the past where the live test trial collapsed
in ignominy after only eighteen months are that the problem of
TB in cattle needs to be addressed as a matter of urgency and
through a thoroughly researched scientific approach. Professor
Bourne also stressed that "we are totally convinced that
this a sensible way forward. What alternatives are there? We have
heard of alternatives but frankly they do not stack up and they
will all simply repeat mistakes of the past. You will get ten
years down the line being no further forward than you are now."[278]
We do not accept that the answers to the questions posed by
the trial are already known and we are greatly intrigued by Professor
Bourne's comment that "There may be some surprising answers
at the end of this trial".[279]
The trial should provide invaluable information about the cost-effectiveness
of culling that could not be obtained by any other means and for
this reason it is in the best interests of all concerned, including
those who care deeply about the welfare of the badger as a species,
for it to continue. We recommend that the culling trial be implemented
in full and strongly encourage all interested parties to co-operate
with it in order that reliable results be attained in the minimum
possible time and with the minimum loss of life to badgers.
Speed of implementation
96. Our support for the culling trial is dependent
upon the speed and propriety of its implementation. The Minister
told us "I am as confident as I can be that we can conduct
the culling aspect of the overall strategy in the areas once they
are designated".[280]
However, we are concerned both at the delays in commencing and
completing the fieldwork for the first two triplets and the haste
with which the trial was begun before all the necessary protocols
such as external auditing were in place. We are not in a position
to judge whether the impression created that something had to
be seen to be done after so much time had already been wasted
is a correct one but it is certainly one which persists and needs
to be addressed. From the point we have now reached, it is important
that both the Bourne Group and MAFF staff learn from these experiences
and that the speed with which the rest of the trial is implemented
be increased. MAFF is currently planning to have all ten triplets
up and running by the end of 2000. This obviously has an impact
on the overall length of the trial, although as Professor Bourne
told us "it is the quantitative data that we need and it
will take time to achieve that. Whether it is five years or seven
years or four years, we do not know. It depends on the strength
of the data". [281]
He also told us that "if the data is strong enough we could
perhaps terminate this prematurely".[282]
This argues even more strongly for more effort and resources to
be devoted to the trial. The former head of the Badger Panel suggested
that it should be "compressed into three years by bringing
forward new trial areas and providing the necessary full level
of funding".[283]
He argued that "a prolonged trial will mean the data is more
difficult to interpret, the problem for the cattle industry horrendous
and the credibility of Government to find a solution lost with
unknown consequences". We share this view.
97. The question remains of how to speed up the trial.
The NFU suggested that all ten triplets should be up and running
by the end of this year, twice as fast as MAFF intends.[284]
Others have suggested that at the very least the ten triplets
should be identified this year so that farmers are reassured that
the trial is going ahead. We sympathise with this view but it
must be weighed against the Bourne Group's insistence on using
the most up to date data to establish the trial areas. Early identification
could exclude potential areas of interest, particularly given
the increasing spread of the disease. We recommend that MAFF
together with the Bourne Group examine ways in which the trial
could be implemented more speedily without impugning its scientific
rigour. At very least a target should be established for the full
implementation of all ten triplets by the start of the closed
season in February 2000 and progress towards this should be closely
monitored. This is in keeping with the Bourne Group's recommendation
last July. Like them, we recognise the logistical difficulties
this involves but we consider it to be essential. Further delays
cannot be tolerated. We examine below whether areas in addition
to the planned ten triplets should be enrolled in the trial.[285]
Role of the Bourne Group
98. The six members of the Bourne Group represent
a wide range of expertise, including epidemiology, statistics
and badger behaviour. The Group has also co-opted an economist
to increase the skills available to them. Witnesses suggested
that other interests and areas of knowledge should be represented
on the Group. For example, the RCVS and the BVA not surprisingly
wished to include a veterinarian,[286]
although, as Mr Rooker reminded us, Professor Bourne himself is
a vet.[287]
English Nature considered that "the Expert Group may wish
to seek greater involvement from those with experience of badger
field studies" to review the experiment.[288]
This was echoed by the NFBG who were "concerned that the
Group does not have members with more expertise in badger welfare,
on farming practices and in dealing with practical issues of bovine
tuberculosis in badgers and cattle." [289]
We have considered whether new members should be added to the
Group to meet these concerns. The Minister was against this, arguing
that "I do not want ... to replicate a mini-MAFF inside the
Expert Group".[290]
He added, "I do not think that would provide us with the
independent scientific advice". In this respect, the Bourne
Group is crucially different from the Badger Panel which preceded
it which did include representatives from farming, badger groups
and other interests. The role of the Bourne Group is to oversee
the scientific trial and while we appreciate the vital importance
of ensuring that they are aware of the practical implications
of the trial and advice to Ministers, we feel that it would be
most appropriate to achieve this through regular contacts and
communication between the Group and other parties, as the NFU
suggested.[291]
It is essential that the independence of the Group is not compromised
by imputations of bias from either lobby. We do not recommend
therefore that new members be appointed to widen the representation
on the Group.
99. There is also the question of the effectiveness
of the Group as currently constituted. Mr Rooker was adamant that
"the Independent Scientific Group is running the trial, overseeing
the trial, and we are relying on their advice and expertise".[292]
Nevertheless, we detected some tensions between the Group and
MAFF on how the Krebs programme was to proceed. There are clear
disagreements between the two parties over the road traffic accident
survey, for example, which have delayed decisions on its implementation.[293]
There was also dispute over the estimate of 500 badgers in Putford
disseminated by MAFF without the approval of the Bourne Group
and which resulted in so much adverse publicity. If the Bourne
Group really is running the trial as is claimed, we would have
expected their advice to be listened to in this and other matters.
Again, while Professor Bourne has recorded his thanks to MAFF,
particularly the Wildlife Unit, for their hard work in implementing
the two triplets and his appreciation of the support offered by
Ministers,[294]
the discrepancy between his firmly stated target of implementation
of the entire trial by the end of 1999 and MAFF's more relaxed
timetable remains of concern. The Bourne Group will need to
have the strength and authority to ensure that the schedule for
implementation is met. At the moment, it is not evident that this
is the case or that the Group have any sanctions should the timetable
slip. This problem must be addressed by the Minister as a matter
of urgency. We note that the Food Standards Agency is to be given
the sanction of publication of its advice to Ministers. The Bourne
Group is not a statutory body but full use of its ability to publish
reports recommending action by MAFF would enhance its credibility.
Communication of data and information
100. In its response to the Krebs report, the Government
gave a commitment to make data available to outside researchers.
This is an issue which matters greatly to those who gave evidence
to us. For example, the NFBG called for data to be made available
at the earliest opportunity and for this to be "balanced
data sets ... rather than just those which focus on the badger".[295]
They complained that they had asked the Government or the Bourne
Group for information on various points but not received satisfactory
answers, commenting "If we are not given that information
it does not instil confidence".[296]
The NFU also thought that "the release of information as
discovered throughout the trial period is important";[297]
while one of their members wrote that "greater openness by
MAFF about all the facts and figures would help the general public
understand the issue better".[298]
It is therefore regrettable that despite MAFF's initiative in
establishing a website dedicated to the issue, we were told that
"there actually is much less information flowing than there
was under previous strategies. It is hard to find out what is
happening".[299]
101. There are two issues here - that of releasing
scientific data from the trial before it is complete and that
of MAFF's public relations strategy - which we will examine separately.
From a scientific point of view, the position is clear that data
from an experiment should never be analysed, let alone released,
until the experiment is completed as planned. Once a power analysis
has been used as a basis for setting the sample size, the experiment
should not be terminated prematurely or added to. The Bourne Group
itself has undertaken not to conduct an interim analysis until
there have been 100 breakdowns, with further interim analyses
about every six months thereafter.[300]
The question arises of whether either the analyses or the data
should be released at that time. The decision is a political one,
in that independent scientists will be aware of the limitations
of such preliminary data and the only gain would be to reassure
the public that there was not a conspiracy of silence and that
the trial was coming up with meaningful results. Against this
is the argument that interested parties may either misrepresent
the data or come to premature conclusions that are not borne out
by the eventual outcome of the trial. Professor Bourne told us
that "we want to be as transparent as we can" but "we
do have to be careful, as a Group, that data is not released which
could compromise the trial and interfere with the integrity of
the trial in future, and which would lead individuals to make
an early assessment, an early analysis, on the basis of totally
inadequate data".[301]
He has asked the Minister to ensure that the agreement of the
Group is obtained before any data is released.[302]
Mr Rooker himself told us "the way it is released and the
timing of the release of valid, scientific information for use
by other scientists is obviously of interest, but we must release
it so it is valid, it is scientific and of use to other scientists.
I am not going to release it just because it is of use to a PR
campaign for the NFU or a PR campaign for the badger groups."[303]
The NFU meanwhile called for periodic progress reports in which
the information was "put in context so that the danger of
misrepresentation is minimised".[304]
102. In the past, the Ministry has been criticised
for their slowness, and some would say hindrance, in the release
of scientific data to bona fide scientists. Quite clearly,
the data from the trials must be readily available to scientists
for analysis and then these findings should be released to interested
parties and the media as soon as possible. However, we are very
aware that early release of such data may jeopardise the trial
and lead to farmers and others in control areas reacting to the
findings. We feel strongly that nothing should be done to jeopardise
the trial. We recommend that the Bourne Group prepare and release
progress reports on a quarterly basis summarising the progress
of the trial and giving qualitative indications of the preliminary
results, with a strong warning as to the reliability of conclusions
based on the data. The contents for these reports is obviously
a matter for further discussion within the Bourne Group but we
recommend that, in consultation with an independent expert statistician,
they carefully consider what information can be made available,
when and in what form and that their decision be made known to
the public well in advance. A criterion of no release of data
before a certain point had been reached, be it 100 breakdowns
or the recruitment of all ten triplets, would be better understood
and respected than the current uncertainty over policy on the
release of information. None of the considerations above relate
to the release of data once the trial has finished. We recommend
that once the trial as planned is completed, the results be published
as soon as possible and all data be made as widely available as
possible for analysis by scientists or other parties.
103. Release of data is the responsibility of the
Bourne Group. General public relations for the trial and indeed
the whole Krebs package is the concern of MAFF and it would appear
on current form that it has been handled less than perfectly.
As Professor Bourne said, "there is a misconception that
the trial is cull, cull, cull ... I do believe that there is a
much more vigorous PR job that must be done here, on better informing
members of the public about what we are doing."[305]
This is particularly important in the TB hotspots, both areas
identified for triplets and those where farmers are anxious to
see action taken to address the threat of herd breakdowns on their
farms. The Wildlife Trusts told us that "there seems to be
no local dialogue" and that MAFF "really does need to
do a lot more about developing local dialogue with organisations
like ourselves".[306]
Such organisations have a major role to play in disseminating
information to their members and while we deplore the decision
of the Wildlife Trusts not to comply with the trial, we can understand
that this lack of dialogue will not help to persuade them otherwise.
The Minister denied that the trial had been a public relations
disaster and claimed that those who referred to it in these terms
were not recognising the complicated nature of the issue.[307]
However, the ease with which sympathy has been stirred up by those
who wish to present this as a simple choice between badgers and
farmers demonstrates more clearly than anything else the failure
of MAFF to get its point across. We realise that this is an extremely
sensitive issue and that many people will never be reconciled
to the trial. Nevertheless, although it is now perhaps too late
to repair the damage, the public relations strategy should be
re-examined to ensure that the public and those groups who represent
special interests are aware of all the issues and developments.
We recommend that MAFF reassess its PR strategy in relation
to the implementation of the Krebs report, with particular attention
to improving public awareness of the purpose of the culling trial.
104. A specific issue about openness and MAFF's predisposition
for secrecy was raised by the RCVS. They told us that local veterinary
inspectors, who are key players in informing farmers in their
area about TB, were sometimes not informed of action taken by
MAFF following the identification of TB reactors.[308]
This criticism was not directly related to the trial but "stems
from the lack of communication between MAFF and LVIs on the whole
subject of TB control and TB presence in the area".[309]
It was backed by a group of farmers from the South West who told
us that "cattle testing by MAFF ... needs to be less secretive,
with more communication between MAFF Tolworth and the grass roots
who have to operate the policy: vets, farmers and the local VI
centres".[310]
We recommend that the communication strategy followed by MAFF
in relation to informing vets and farmers about TB incidents be
reviewed.
The Bern Convention
105. On 2 December last year wildlife organisations
including the NFBG presented arguments to the Standing Committee
of the Bern Convention that the culling trial contravened the
Convention on the Conservation of European Wildlife and Natural
Habitats, to which the United Kingdom is a signatory. The Standing
Committee adopted a recommendation calling on the Government to
postpone the trial and to prepare a response on the planned culling
trial. The Minister told us that MAFF would put forward "a
very robust defence" to show it was complying with the Convention.[311]
The decision against the UK has hardened opposition to the trial,
being raised in evidence to us by several badger groups and the
Wildlife Trusts.[312]
We are concerned that the significance of the Convention does
not seem to have been considered in advance by MAFF legal officers.
Professor Krebs told us that the advice he received from MAFF
on the legal framework for badger culling had not mentioned the
Bern Convention, although he added that "it would not have
actually altered my conclusions, recommendations had I been aware
of it at the time".[313]
By the time the Bourne Group came to consider the implementation
of Krebs, MAFF had added the Convention to its list of legal implications
to bring to the attention of the Group but Professor Bourne told
us "They believed it not to be an issue and we are persuaded
subsequently that it is not an issue".[314]
It appears that MAFF officials made no attempt to prepare a
case for the December hearing which went ahead without even seeing
the Krebs report.[315]
Mr Rooker found the Standing Committee's behaviour "astonishing".
We find it astonishing that MAFF placed their Ministers in such
an embarrassing position. We understand that the Standing Committee's
finding has no legal implications. However, we await with interest
the outcome of the Government's defence of its policy.
207 MAFF, PN 337/98. Back
208 Ibid. Back
209 Ev.
p.140. Back
210 Q
155. Back
211 Ev.
p.140. Back
212 HC
Deb, 23 March 1999, c.224w. Back
213 Q
79. Back
214 Q
177. Back
215 Q
621. Back
216 Ev.
p.171. Back
217 Ev.
p.179. Back
218 Ev.
p.184. Back
219 Q
82. Back
220 Ev.
p.18. Back
221 Ev.
p.76. Back
222 Ev.
pp.241, 247. Back
223 Ev.
p.180. Back
224 Ev.
pp.184, 242 Back
225 Ev.
p.185. Back
226 Ev.
pp.202, 232. Back
227 Ev.
p.178. Back
228 Q
146. Back
229 Q
563. Back
230 Ev.
p.46. Back
231 Bourne,
7.21, 7.22. Back
232 Ev.
p.123. Back
233 Ev.
p.48. Back
234 Ibid. Back
235 Ev.
p.178. Back
236 Q
370; Ev. p.177. Back
237 Ev.
p.97. Back
238 Bourne.
3.2. Back
239 Ev.
p.46. Back
240 Q
364. Back
241 Ev.
p.186. Back
242 Q
427. Back
243 Q
165. Back
244 Ev.
p.236. Back
245 Q
312. Back
246 Ev.
p. 46. Back
247 Q
152. Back
248 Ev.
p.180. Back
249 Qq
416, 498. Back
250 Q
418. Back
251 Ev.
pp.114, 124, 210, 232. Back
252 Ev.
p.232. Back
253 Q
162. Back
254 Ev.
p.177. Back
255 Ev.
p.241. Back
256 Q
42. Back
257 Q
177. Back
258 Q
621. Back
259 Q
623. Back
260 Q
153. Back
261 Q
178. Back
262 Ibid. Back
263 Ibid. Back
264 Q
624. Back
265 Bourne,
14.1-14.4. Back
266 Ev.
p.141. Back
267 HC
Deb, 15 March 1999, c.553w. Back
268 Ev.
p.178, Q 308. Back
269 Qq
151-2. Back
270 Ev.
p.88. Back
271 Ev.
p.245. Back
272 Ev.
p.241. Back
273 Q
630. Back
274 Ev.
p.245. Back
275 Ev.
pp.240-1. Back
276 Q
146. Back
277 Q
95. Back
278 Q
195. Back
279 Q
188. Back
280 Q
672. Back
281 Q
184. Back
282 Q
186. Back
283 Ev.
p.243. Back
284 Q
431. Back
285 See
paragraphs 115 to 120. Back
286 Q
516; Ev. p.194. Back
287 Q
723. Back
288 Ev.
p.241. Back
289 Ev.
p. 42. Back
290 Q
721. Back
291 Ev.
p.98. Back
292 4Q
711. Back
293 Q
704. Back
294 Ev.
p.21. Back
295 Ev.
p. 43. Back
296 Q
320. Back
297 Ev.
p.97. Back
298 Ev.
p.171. Back
299 Q
381. Back
300 Ev.
p.20. Back
301 Q
159. Back
302 Q
160. Back
303 Q
714. Back
304 Q
426. Back
305 Q
159. Back
306 Q
381. Back
307 Q
733. Back
308 Ev.
pp.124-5. Back
309 Q
517. Back
310 Ev.
p.192. Back
311 Q
735. Back
312 Ev.
pp.87-88, 185, 188, 202. Back
313 Q
129. Back
314 Q
251. Back
315 Q
734. Back
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