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Deworming

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Dr.Khalid Pervaiz
DVM ; M.Phil (UVAS)
Additional Principle Veterinary Officer
Pandi Ghep . Attock

Published in: Food
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Deworming

  1. 1. Worm infection is Grazing problem ofworms eggs contaminated pastures IN Punjab No Grazing Land is available for animals Our 80% Livestock is keptby small Dairy Holder under chain in clean premises in side or near family houses. And these animals have No chance to get infection in contaminated pastures / or fodder taking L3 stage Larvae ofround worm that require a specific favorable condition / temperature to hatch out from worms eggs on grazing area / fodder and Liver flucks infection also require intermediate Hostand meracidium on fodder or grazing area. In Punjab less than 20 % Livestock have grazing area while other Livestock feeding on fresh fodder without any contamination of worms eggs. The Following 3 stages ofLarvae (after hatching worms eggs) require to getinternal worm infection for grazing sheep and cattle’s on contaminated pastures (as shown in below fig.) 1-Dung stage 2-Pasture stage 3-Host stage,,,,,,,L3 stage in Hoststage require 18 days with favorable weather condition on specific temperature and humidity for developmentand survival on grazing grass ofpastures .
  2. 2. While Weak condition livestock in field is considered case ofworm infestation with recommendation ofDeworming by our Vets, or by farmers themselves withoutjustification and without Lab, test actuallysuch cases are misdiagnosedin under fed animals on mal-Nutrition that is very common in field. In advance countries havinghuge Livestock like Holland/ Australia/ Newzeland/ Sweden etc.with huge Pastures with free fodder In these countries thecontaminated pastures with worm eggs are problem having the above 3 condition favorablewith ideal temperature / ideal humidity for worm Eggs hatching todevelopinto the L1 and L2 and L3 stage that is after about on 18 days hatching of worms into larvae whenweather conditions are favorable for survival on pasture grass and engulfed L3 stage Larvae during Grazing of animalsto get infection. In these countries, Deworming is planned on seasonal control, Deworming recommendation for cattle at the right times and to reduce the worms for an entire season.A strategic deworming program reduces the parasite burden on the pasture and in the herd in these countries Sheep are more susceptible to internal parasites than most other types of farm livestock for several reasons. Their small fecal pellets disintegrate very easily thus releasing the worm larvae onto pastures. They are also less of a problem in arid regions, because parasites require moisture for their development.The fecal counts only estimate the parasite load, there is no clear cut level at which deworming is indicated. As a general, a level of more than 500 EPGeggs per gram of feces would indicate that dewormingis needed. A more effective way of deciding when to treat would be to monitor fecal every 4-8 weeks when there is a dramatic rise in egg counts the Deworming is required when animals are in grazing yards

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