Liver fluke affecting your stock?

Liver fluke affecting your stock? Are you getting kill sheets back with live liver fluke present? If so, it is time to act to reduce the damaging effects of the fluke on the liver. Drought conditions encountered this season have encouraged stock to graze into wet areas (if anything was still wet?) leading to potentially high intakes of liver fluke larvae from the pasture. Liver fluke can be responsible for: Reduced reproductive performance Increased culling Decreased cull weights Reduced milk production Reduced growth rates Reduced wool yields Potential immune suppression Once liver fluke…Read more

Knock Out Drench

Knock Out Drench This is when you use a drench that has an active (the thing that kills the worms) that is not in your other drenches so it is able to kill worms that your 'normal' drench can’t.  This slows the development of drench resistance to your routine of 'normal' drenches.   Autumn is a good time to get the most impact from a Knock Out drench.Read more

Is your drenching effective?

Is your drenching effective? The autumn is a good time to do a “drench check” faecal egg count. By now the lambs have been drenched multiple times so if there are any drench resistant worms on the farm they will be concentrated in these lambs making a “drench check” more reliable. It is also a good way to make sure that the drenching procedures are working. One to two weeks after drenching collect 10 individual faecal samples direct from lambs or fresh from the ground. Keep them cool or in the fridge until…Read more

Dairy Weaner worm management: It’s not all about drenching!

Dairy Weaner worm management: It’s not all about drenching! With consistent rainfall and warm temperatures around Taranaki, we have been fielding a lot of queries around facial eczema (FE). These weather conditions are not only good for FE they are also ideal conditions for worm survival on pasture. It is important that every farm has some form of worm management plan in place to deal with this. The goal of any worm management plan is to maintain or enhance profitability by: Minimising contamination of pasture with infective worm larvae. Minimising uptake of infective…Read more

Using genetics as a tool for increasing host resistance

Using genetics as a tool for increasing host resistance   Ram sales have begun around the country and now is an ideal time to think about the genetic direction of your flock. The Wormwise principles recognise that there are differences in animals in their susceptibility to parasites. These characteristics of host resistance (ewe resilience / parasite tolerance) can be identified and the level of inclusion will determine the benefit in your flock.  Remember, the more selection pressure that is placed on these characteristics, the faster the genetic gain will be. So how can…Read more

FEC monitoring a high priority this season

FEC monitoring a high priority this season By Ben Allott Here in North Canterbury the level of parasite challenge affecting ewes and lambs last spring and summer was huge and conditions are lining up to repeat this challenge again last year. Following the heavy parasite challenge last spring we then saw a season of high egg counts in 2-tooth and mixed-age ewes on many farms right through the autumn and well into winter.  Scanning rates, ewe condition, and hogget growth rates were definitely impacted.  This has been followed by a mild winter with…Read more

Leaving 5% of lambs undrenched

Leaving 5% of lambs undrenched By Andrew Dowling Simple messages don’t work well in complex farm systems.  Refugia management is very important when it comes to preserving the life of drenches and there are several ways that this can be achieved.  Leaving some lambs (say 5%) undrenched is one method.  What impact will it have on your farm? This depends on your farm system and very importantly the efficacy of your drench. Leaving a small number of animals undrenched to increase refugia only works if your drench is highly effective, so you need…Read more

Summer 2019 – Faecal egg count reduction testing time!

Summer 2019 – Faecal egg count reduction testing time! By Ginny Dodunski Drench resistance testing can feel like those health checks we avoid or ‘defer’ for ourselves: It is not a pleasant job, we might not like the results and the changes we may have to make might be unpalatable. But like those personal health check-ups, when you let them slide there is always that bit of doubt in the back of your mind, wondering what is really going on unseen, and the long-term cost of not knowing where you’re at? And isn’t…Read more

Managing larvae on pasture

Managing larvae on pasture By Rochelle Smith Wouldn’t it be great if we could see parasite larvae on the pasture?!  Do you ever start to feel like your lambs keep on looking wormy in autumn, despite a drench?  This could be the start of drench resistance or it may be a symptom of management decisions made much earlier in the season.  Either way, it warrants further investigation. The immune response begins as soon as the animal eats infective larvae on pasture and continues through the development of the larvae into an adult and can…Read more

Wormwise Handbook

Handbook for farmers The Wormwise handbook is a central source of information about the principles and strategies for sustainable worm management for New Zealand farmers. The principles themselves are quite straightforward; it is their practical application that is more complicated. Farming systems vary tremendously and what works for one may not be practical for another. For this reason, it is impossible to develop a set of “rules”. Instead, farmers should seek to understand the principles and then make their own decisions on how they might be applied to their farm. This book is designed…Read more
  • 1
  • 2