September 2009 Archives

'Blinkers must be removed' said former FG columnist Robert Forster and ex CEO of the National Beef Association, in his opinion piece for FG last week. And 'Farmers must accept that cattle-to-cattle spread of TB is anything but marginal'. 

 

These quotes mirror the message offered by the ISG and Professor John Bourne, who tried so desperately to pin increases in TB incidence in this country on cattle jumping around the place, coughing as they went.

 

The evidence for Mr. Forster's 'opinion' on the behaviour of this bacteria - it is not a virus - is said to come from the newly appointed TB Eradication Group (T-Beggars) with epidemiological evidence provided by employees of the Public Accounts Committee. Some unidentified Welshmen are also quoted. Unfortunately past peer reviewed work would contradict this confident assertion. Several times, and in three separate areas of the UK.

 

In the 1970s William Tait arrived in SW Cornwall, where a patch of persistent TB in cattle was spoiling the Ministry's eradication maps. He was 'fierce' in his interpretation of tests, introduced whole herd slaughter and cohort culls. He synchronised tests and ordered only licensed movements of cattle. Pretty much what the ISG's computer model, said would reduce TB incidence by 15%, four decades later.

 

But CVO reports of the time indicate that Tait's brutal carnage had no effect whatsoever on the level of TB in cattle, which only started to drop when gassing of badger setts close to the affected farms began.  Liam Downie's efforts in the Republic of Ireland in 1988 - 91 met a similar block wall. At the start of his very expensive crackdown on cattle, which was just as 'ruthless' as Mr. Forster proposes, Mr. Downie recorded 30,000 cattle dead.

 

At the end of it, having undertaken exhaustive tuberculin testing. (44 million tests on 7 million cattle , over 4 years) combined with random sample herd testing,  whole herd de-population of persistently infected herds, pre-movement testing and animal movement controls, the Republic had some seriously fed up farmers, a huge bill  - and 35,000 reactors.

 

At about the same time as Downie's adventures, in Northern Ireland Dr. Louis O'Reilly carried out pairings of cattle to try and validate lateral spread of bTB. Fifteen naturally infected cattle were housed with two in contact cattle each, for seven months. His report states "At the end of the period the infected cattle failed to transmit Tb to the in-contact pair of animals". And that is after being housed, sharing water, feed and airspace. 

 

Ten years later (c 1997), one of Dr. O'Reilly's researchers had a second bite at the cherry. Eamon Costello repeated the experiment with ten pairings, but housed them for twelve months. Although these cattle were in close confinement for a year, the in-contact cattle in six of the groups failed to become infected. Evidence of  bTB transmission was found in only four of the groups. Costello reported: ""The results of the experiment suggest that tuberculous cattle do not readily infect other cattle."

 

The TB investigation unit in Northern Ireland have suggested that infected badgers may be the primary source for new outbreaks.

 

And our very own Defra recently spent £2.8 'salami slicing' reactor and in-contact cattle it what was known as the 'Pathogenisis project'. None of the over 1600 nasal swabs taken in this or a parallel study, from several hundred cattle over several months were positive on culture for onwards transmission of TB. Even from the 23 cattle with lung lesions. Not a single one.

 

Perhaps Mr. Forster is unaware of this work. Perhaps he is unaware of the VLA's carefully crafted spoligotype maps, showing the same strain of TB circulating between tested sentinel slaughtered cattle, and free ranging badgers in several well defined areas.

 

And maybe he has not seen the risk assessments, diligently carried out by AHOs in the SW which show that up to 92 % of TB breakdowns in hotspot areas are not related to cattle purchases.

 

Devon Pie-Chart(Chart of causes of TB in Devon first shown at the Killarney BCVA conference. These were compiled by AHOs after risk assessment of new breakdowns.)

 

 

And Mr. Forster  doesn't explain to those of us enduring pernicious rounds of 60 day tests, with the skin test doing exactly what it says on the tin and picking up cattle ahead of active infection in most cases, just what else we are supposed to do to operate these 'ruthless' cattle measures. Or why we are 'blinded' to the cause of our problems, when every other avenue has been excluded.

 

To be fair, Mr. Forster mentions  parallel badger control,  briefly. But given the experiences of William Tait, and Liam Downie, Dr.Louis O'Reilly and Eamon Costello, he fails to explain how piling up more dead cattle will help anyway, when the cause of their continuing exposure to m.bovis is, in the majority of cases, not their dead herd mates at all.

 

My cattle have now ratcheted up 40 skin TB tests and one gammaIFN blood screen in eight years. Four of these read under severe interpretation. But despite these prolonged restrictions, no cattle have bounced back as 'slaughterhouse cases' missed by these tests.

 

Until the 2001 breakdown, we tested annually. The farm is ring fenced by woods and roads and we share no machinery, or accesses. We do share badgers with neighbours, who are also under prolonged TB restrictions and testing several times a year.  After selling the main dairy herd and youngstock, we gradually restocked with calves or preMT pedigree animals as the core of a new beef enterprise. And it is those animals that are now reacting to exposure to bacteria deposited by the valley's wildlife reservoir. My AHO's risk assessment supports that view.

 

Mr. Forster argues that many farmers are 'blinded' by the notion of badger culling, and have ignored their own responsibilities with regard to cattle to cattle transmission.

Define 'responsibilities'? 

 

Many of us have kept closed herds, operated as tight a biosecurity as we could, tested and slaughtered cattle as regularly as requested by Defra or its predecessors - and still suffered prolonged TB restrictions.

 

Both Tait and Downie experienced the futile frustration of a one sided policy, while answers as to why the Thornbury badger clearance was so successful drew the written parliamentary answer: "no other contemporaneous change was identified that could have accounted for the reduction in TB incidence in the area".

 

It is easy to offer glib solutions to a situation through the rose coloured spectacles offered by a distance of several hundred miles and at arm's length from the cattle under your care. But bacteria, hitching a ride on free ranging wildlife do not respect lines drawn on maps, neither to they respond to political bullying - they just spread.

 

 

 

Collateral damage

| 7463 Comments | No TrackBacks

The main thrust of these stories from the farm gate concern cattle, badger TB and the effect of the disease on our business. But another problem is the damage that excavations by these black and white, subterranean miners cause.

In the last few years, numbers have increased substantially, (by 77 per cent in a decade) and they have to live somewhere. Their setts have a Grade 1 listing and even if the occupants undermine roads, excavate graveyards, drain canals and reservoirs or cause injury when people fall down into their tunnels there is very little that can be done as the following snippets illustrate.

A decade ago, allotment holders in Richmond were forced to give up their plots as badgers excavated two setts under them, and made use of a ready filled larder.

Maize 2In 2005, they broke into Erlestoke prison in Wiltshire, biting a prison guard in the process. In Kent, they have excavated the road into Dargate which regularly cuts off the village, as 'elf and safety' won't allow traffic over it, and the badger protection laws won't allow them to be moved very often, or very far.

In 2007, after the use of one-way-gates, they had returned for the fourth time - slightly further down the road and at considerable cost. In Saltdean near Brighton,  residents experienced the joy of a farm slurry store undermined and collapsing - on a Sunday afternoon.

 Over £25 million  worth of damage to agriculture was caused by badgers in the one year Defra dared to ask, and they seem to be attracted to graveyards, both ancient and modern. The Ministry of Defence say that a Bronze age burial barrow in South Pembrokeshire is being asset stripped of its contents by badgers, and further reports of damage come from Salisbury Plain, Dyfyd and Ashbourne.

MaizeLast year badgers have created a honeycomb of tunnels under the 12th century graveyard at St Lawrence Church, in Cheltenham. They disturbed two other graves - and four more in danger of collapse were cordoned off. Relatives were extremely distressed to find coffins and caskets exposed, and their carefully tended graves looking like a bomb site.

 Meanwhile on our patch, the maize crop is under attack. Standing straight and tall overlooking the sea in a 'before' shot, a second picture shows a patch felled and the cobs chewed.


It is an early variety which will be harvested just as soon as we can. And then securely sheeted down. And then there is problem of 'badger proofing' the centre feed passage - without causing pneumonia and heat stroke to the cattle sealed up inside.

Enough rope?

| 6276 Comments | No TrackBacks

What a delightful chap. Jack Reedy, vice-chairman of the Badger Trust, interviewed in last week's FG must have had cattle farmers, especially those under herd restrictions and losing shed loads of cattle, enthralled.

 

His kindly brow, knitting with genteel compassion, Reedy showing genuine understanding of our problems and gave much information, which may be of help to us lesser mortals.

 

The Badger Trust deals in 'facts' says Mr. Reedy, while TB hit farmers - that's me - trade on emotion. His arguments, he confirms, are based on 'sound science'.

 

So quite unemotionally I ask, would that be the 'science' with which I am familiar, or the sort of 'political science' so recently delivered by members of the ISG?

 

Professor Bourne was at pains to make clear to various committees that a small amount of badger culling may be sanctioned, but only to act as an inducement for more brutal cattle measures of the sort Mr. Reedy is proposing. And which he openly told veterinary colleagues at the beginning of his culling trial, would be their only option at the end of it.

 

He reiterated this political steer which his 'trial' had received when interviewed both by the EFRA committee and the Welsh Assembly in July 2007. His evidence to the latter, prompting this explosive gem from Mr. Paddy Rooney, representing the CLA and a member of the TB Action group who said:

" Perhaps I might preface my remarks by saying that I was brought up as a scientist; it was not in this discipline, but scientific principles hold, whatever the discipline. One of the things that I was taught was that, in designing an experiment to try to address an issue or a problem, you may not like the results, but you accept them. I find it deeply shocking that responsible scientists should have been prepared to undertake a research study having been told at the outset that there is a conclusion that they are not allowed to reach. I find that utterly disgraceful".

Indulging in a bit of political back covering, Professor Bourne also told ministers in 2007 that badger culling 'as was conducted in this trial' had no place in policy. He was careful to say that, he said, as other types of culling which had not been part of the trial and thus may have had a different outcome. For sure, he certainly showed us all how not to cull badgers.

 

 But that is the type of 'political science' which seems to attract Mr. Reedy and his fellow travellers, who appear to neither know nor care about any research pre ISG, or post RBCT.

 

The basis of Bourne's badger dispersal trial is contained in a description of the way 'risk' was assessed. Farmers involved with the RBCT filled out a long TB99 form which identified the possible causes of why the farm had suffered a breakdown. This still happens and is used to assess the need for back tracing of cattle movements and contacts. (In 2001, mine said 'no risk' from everything - except badgers, but the ISG ignored it along with all the others.)

 

This form should have formed the basis of the RBCT mathematical modelling. However for whatever reason, it did not. It was binned and the modellers used an 'assumption' of cattle contact across farm borders, bought in cattle and badgers as their points of reference. All three calculations were then given 'roughly equal importance'. 

 

This is despite evidence from local AHOs, which consistently showed that at least 76 per cent and up to 90 percent of TB outbreaks in the worst areas are down not to cattle at all, but to badgers. Mr. Reedy accepts that badgers play a role in TB hotspots and says he "would be an idiot to deny that". Indeed.

 

On hotspots remaining in the UK after the TB eradication clearances of the 1960s, Mr. Reedy says that the weather and not culling out whole herds, caused the consequent spread of disease. He is wrong on both counts. In the West Penwith area of Cornwall in the early 1970s, whole herd slaughter, cohort slaughter, licensed movements and severe interpretation of synchronised tests were used by the DVM of the time, who was 'fierce' in his goal to clear out TB.

 

He failed, and the CVO reports of that decade confirm that he failed. Not until badger culling was started in 1974/ 75, did reactor figures finally start to drop. Similar stringent cattle measures were used in the Republic of Ireland with equally expensive and futile results. And climate? The Scilly Isles and Isle of Man share the same air space and geological features as SW England, but have no badgers and no home grown TB.

 

And the SW's badgers have not migrated northwards and westwards either, as the VLA's TB spoligotype maps show. The disease is circulating in clearly defined patches between tested, slaughtered cattle and free ranging badgers, exercising their right-to-roam. 

 

And then 'closed herds'. Mr. Reedy scoffs at the suggestion, citing show visits, lorries, and shared equipment as other possibilities for the spread of TB.  But as I said in my first FG blog post, I have a piece of paper from BCMS written in 2005, confirming 'no bought in cattle on the database'.

 

We did not show cattle (although we sold some good ones) and our boundaries were inspected by Defra's predecessor as being totally secure, with the cattle accepted as part of their voluntary EBL scheme. Lorries have access directly from the public road (not through cattle entrances) and we share no equipment. At that time (2005) we'd had continuous 60 day TB tests for over 4 years and lost too many good, home bred cattle.

 

But I'm not about to 'trade on emotion' about their totally unnecessary deaths or the strain it put on our business. Or even the fact that we are still uninsurable, still under TB restriction and unable to run our business as we would like. I'm not 'emotional' at all - but I am bloody angry at the sheer waste of money, time and effort Defra and their assorted snake-oil-peddlers throw into tiptoeing around trying to avoid this elephant in the room.

 

I am 'disappointed' that having published biosecurity research which they had commissioned, Defra can still publish duplicitous advice to farmers - and offer taxpayer's money for more research.  And I am surprised that apparently intelligent people, still believe that the earth is flat.

 

Wet weather notes

| 8282 Comments | No TrackBacks

CalvesThe first days of September and we have horizontal rain, blown in on a westerly gale. I took the photo of some of this year's calves last week, bright eyed, bushy tailed and inquisitive in the bright sunshine. Today, sitting snug in the farm office, they make a better picture than what's going on outside.

 

Another creep feeder has been ordered, and later this week will be delivered to our chap-who-does-the-welding, for its badger-modifications. He attaches a simple hinged flap with a rolled edge, which drops down to give access to feed during the day, but which can be flipped up to close it off at night.

 

 

Another job, but all farm assurance schemes say we must 'prevent the ingress of vermin'.

 I have contacted the manufacturers to suggest a factory  'modification' - with no charge for the idea of course, but throwing the obvious crumb, that a third creep feeder would be most welcome!

 

In general, farmers have no idea how resourceful badgers can be when their evening meal is at stake. After hoovering up the local earthworms, hedgehogs, frogs, toads and ground nesting birds, cattle feed stores and TMR troughs are a breeze.

 

Creep feederThey can flatten out to slither under your sheeted gates, climb to 16 feet (or more), and as I said in an earlier post, they've been filmed vaulting into cattle troughs over 4 feet off the ground.

 

And if all accesses to your buildings are hermetically sealed, and your cattle haven't by that time succumbed to pneumonia, these resourceful creatures have been known to dig a Colditz - type tunnel into farm buildings. Arriving in the middle of earth floored areas through the top of a very large molehill.

 

I'm told that the walls of the badger pound at VLA Weybridge, designed to keep them in, are reinforced concrete sunk 15 feet in the ground. Not many farm buildings or feed stores have that degree of armour plating.

 

Mycobacterium bovis, the bacteria that causes TB is a tough cookie; an organism with wearing a wax jacket and having a centre that will withstand practically everything apart from UV rays. 

 

It loves water, withstands freezing and survives submersion in acid. Boiling for 15 minutes will zap it, but that's not terribly practical in a farm situation. Weather influences its survival when on grassland, and away from the sun's rays, it can survive for months. Underground it's survival extends to years.

 

The point is that whatever we know from decades of previous research about the survival of this organism, is missing the point. It has no place plastered across my grassland in the first place. And I have no wish to donate the three cheeky youngsters in this week's photo to the maw of Defra's culling machine.

About this Archive

This page is an archive of entries from September 2009 listed from newest to oldest.

August 2009 is the previous archive.

October 2009 is the next archive.

Find recent content on the main index or look in the archives to find all content.

Categories

Pages

Powered by Movable Type 4.23-en