Microsoft word - brig field day 5 newsletter march 201March 2011
PARASITES IN CATTLE : Dave Leathwick, an independent researcher from AgResearch, delivered a thought provoking presentation on the use of drenches in
cattle in NZ.
He showed us a reminder of the national survey conducted in 2004-05.
Combination A + L Farms passing all groups As you can clearly see, drench resistance is a bigger issue in cattle than in sheep, a message we often forget. Another message that is forgotten is that developingdrench resistance is like a melting glacier. You can't see it melting away unless you actually measure it. Your eye will not pick it up.
The three main worm species are:
Cooperia – predominantly cause problems in R1
Ostertagia – causes problems mainly in R1 and
Trichostrongylus axei – can affect any age
cattle in the autumn Stressed stock are more susceptible to developing a worm burden.
Cattle drenches come in 3 different methods of application - oral, pour on and injectable. They also come in
different formulations so they are absorbed differently.
Dave presented several studies from around the world looking at different methods of application of pour ons.
There appears to be more variation in the This appears to be the second most reliable This is Dave's preferred method of performance of pour ons than by other methods.
method of application but there is currently only administration. It is the most reliable method, This is due to formulation, temperature when single action formulations which are not ideal.
comes in combination formulations and is the applied, licking by other animals and probably However new combination products are on the best way of getting the drug to the worm.
The principles of parasite management recommended for sheep also apply for cattle. They are: 1. Use combination drenches 7. From Dave's presentation the independent data presented suggests that oral 2. Drench to the heaviest animal formulations should be used when possible. However effective dosing is 3. Drench for a reason critical and if you can't deliver a full oral dose then another method is 4. Leave healthy good conditioned animals in a mob undrenched probably safer and more effective. Your safety is paramount.
5. Quarantine drench cattle arriving on farm and let them into a known wormy 8. Drench testing using wormy R1 cattle will help assist in making informed paddock for 2-3 days.
decisions around product use.
6. Get good advice.
We followed up with the 6 farmers we interviewed in the spring to see how calving went.
Cows to calve
Cows block grazed in Cows lightened off from calving paddocks sooner than norm.
One mob among ewes Cows block grazed in Losses unknown cause as they are left Cows behind wire on on Calf losses3 winter slips5 dead at birth12 due to storm11 saved and fostered or hand reared4 calves lost during storm1 broken leg at 4days old Cows behind wire on saved Cows were moved from behind wire for 7 days during stormDid plough up paddock but this was to becropped anyway One mob behind wire 1 rotten calf - cow survived Other mobs block grazedon saved paddocks 7 calves were rescued from bogs17 of 26 mid November calving cows areback in calf to calve in 1st 2 cycles cows & heifers combined Please note that percentages given are to cows at set stocking, not cows at scanning. Minimal calving assistance of the cows was required to achieve these results. All systems have their pros and cons. Behind a wire management gives you the best utilisation of pasture and ability to assist cows. However as was seen this season, wet conditions can make this system problematic and bogged calves, navel ill and mismothering are some of the main problemsencountered. The number of calves weaned is still the most important KPI of a breeding cow herd. Weaning Method Study
We reviewed the Weaning method study conducted by 7 local farmers last year. We compared the fence line, yard wean and cold turkey methods.
There were no differences in live-weight 30 days after the cattle were weaned.
There was a significant improvement in temperament in the yard weaned cattle and all the farmers who used this method intended to use it again this year if the conditions were dry.
It is also a great method to introduce new feeds which may be utilised later in life eg palm kernel.
It is also a great technique to use when purchasing freshly weaned calves out of the sale-yards.
HUNTERVILLE VETERINARY CLUB INC.
Winter Wonderland – Rebecca Rowe
We have had a difficult spring, normal rains albeit in heavy dumps rather for summer but our cattle feed situation is still in a very
dire situation. There is no roughage left on the hill country.
We have 2 options: 1. Increase feed supply 2. Decrease feed demand Increase feed supply – How?
Make it rain? Head in the sand stuff.
Supplementation – minimal roughage available, palm kernel is probably the only feasible option.
Nitrogen – individual farm decision.
Reducing Demand – How?
Use the drafting gate – taking off the lights and maintenance for the main mob.
Ewe mobs are in general in good condition. You need to shut paddocks out of the rotation to allow cattle feed to develop.
Sell revenue stock – be realistic about further value you can add to trading stock and at what expense, not just what they will eat but what compromise is made to breeding stock in the future.
Weaning calves early- remember from previous field days that if you aren't growing your weaners through the winter then you are likely to be making no money on them in the spring. That is wintering costs offset any extra value gained at sale.
Consciously adjust the performance of stock classes.
Off farm grazing – grazing costs vs replacement costs. Selling the dry cows may cashflow this.
Delay ewe mating – older lambs at weaning are not always bigger lambs.
Sell late calving cows – get the cows scanned at the appropriate time to identify lates.
There are many skinny cows out there at the moment. They require careful management to get a live calf out of them. A live cow now is still money in the bank, a dead cow at the end of winter is lost income and the cost of winter feed.
Cows need good nutrition (1500kgDM/Ha pasture covers) for 4 weeks prior to calving 6-8kgDM above maintenance (8kgDM).
ZUKUNFTSWEISENDE THEMEN DER DIAGNOSTISCHE HINWEISE UND BEHANDLUNGSGRUNDSÄTZE FÜR LYME BORRELIOSE UND ANDERE ZECKENÜBERTRAGENE KRANKHEITEN Sechzehnte Auflage Copyright Oktober 2008 JOSEPH BURRASCANO JR., M.D. International Lyme and Associated Diseases Society Übersetzt von Claus Mayer Die in dieser Monographie enthaltenen Informationen sind lediglich als Überblick gedacht. Die Behandlung von zeckenübertragenen Erkrankungen muss bei jedem Patienten auf individueller Basis und nach bestem Abwägen des behandelnden Arztes geschehen. Der Übersetzer übernimmt keine Garantie für die dargestel ten Sachverhalte. Im Zweifelsfal gilt das Original im Wortlaut des Verfassers. Die Übersetzung ist nach bestem Wissen und Gewissen im Februar 2009 angefertigt und korrekturgelesen worden.
rofessor Sir Simon Wessely – R ight or Wrong? Margaret Williams 28th October 2013 [Plus UPDATE 21st April 2014 follows below] When a professional person – especially a doctor – has repeatedly been shown to be wrong in their professional judgment and, as a direct consequence, people have been harmed, that doctor should surely be held personally responsible and accountable: in such circumstances legitimate criticism should not be dismissed as an ad hominem (personal) attack.Following the award of the inaugural John Maddox Prize to psychiatrist Professor Sir Simon Wessely for his alleged "courage" in "standing up for science" and for promoting "sound science" about ME/CFS in the face of "hostility" in doing so, a letter published on 13th January 2013 by the Countess of Mar, Professor Malcolm Hooper and Dr William Weir in The Independent on Sunday was explicit that criticism of Wessely's hypothesis about ME/CFS is scientifically legitimate:"Scientific understanding always depends upon sound evidence….For scientific understanding to prevail, the extensive biomedical evidence-base of ME/CFS must now be recognised by all researchers in the field. The idea that ME/CFS is due to a dysfunctional psyche is a hypothesis without an evidence-base. The Maddox Prize was therefore awarded to the defender of an hypothesis with no evidence-base rather than to someone who was upholding true scientific inquiry. Personal attacks against Professor Sir Simon Wessely do not advance the cause, but it is scientifically legitimate to direct criticism at the hypothesis both he and Professor White (chief Principal Investigator of the MRC's PACE trial on ME/CFS) continue to espouse". It has been shown time and again that Professor Sir Simon's published assertions about disorders such as ME/CFS, fibromyalgia, Gulf War Syndrome, the Camelford drinking water poisoning, and interstitial cystitis are simply wrong. Merely stating so is likely to result in yet more claims by him of "harassment" and "attack" upon him but, in the words of Professor Martin Bland, one of the UK's leading medical statisticians, it is important that false information should not remain on the record to be quoted uncritically by others: "Potentially incorrect conclusions, based on faulty analysis, should not be allowed to remain in the literature to be cited uncritically by others" (Fatigue and psychological distress. BMJ: 19th February 2000:320:515-516). Wessely's "incorrect conclusions", however, remain in the literature to be cited uncritically by others and therefore may result in iatrogenic harm.ME/CFSFor over 25 years Wessely's dismissal and rejection of the biomedical evidence on ME has continued unabated, even though there is substantial evidence of on-going inflammation throughout the body; systems prominently affected are the central and autonomic nervous systems, the immune system and the cardiovascular, endocrine, gastro-intestinal and musculoskeletal systems.