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affect cattle in Virginia. Of these species, the one thought to be of most importance is Ostertagia, also known as the brown stomach worm. There are several aspects of this worm’s life cycle that are important in designing a complete deworming program. Cattle are most susceptible to this worm at less than 2 years of age. Most cows greater than
Apr 1, 2011 · Exactly when you deworm your cows matters; both to the cows and to the worms. Burt Rutherford, Senior Editor. April 1, 2011. 8 MinRead. Larry Hollis calls it the clean cow-clean pasture concept. That’s his answer to the question of when you should worm your cows. “The way I look at it,” says the Kansas State University Extension ...
- Burt Rutherford
Aug 23, 2023 · 1. Who should be dewormed? Don’t deworm every animal in the herd. The best return on deworming investment occurs in cattle under 4 years of age. Natural tolerance to internal parasites develops as the animal matures; the worm’s presence is less likely to harm an older animal’s production.
Cattle are most susceptible to this worm at less than 2 years of age. Most cows greater than 2 - 3 years of age have developed immunity to this worm and do not show an economical benefit to deworming: However, deworming o f cows can decrease the exposure of younger animals pastured in the same field.
It is the combination, Cummings says, that provides effective treatment of worms. In the 100-eggs-per-gram example, a single drug may kill 90 of them, but there’s still 10 left. “If you add a second drug that is also 90% effective, that response can jump to 99% overall due to the added effect of the dewormers,” he explains.
- Mindy Ward
Sep 3, 2019 · In areas where cattle are dewormed, it is recommended to treat cattle one or two times a year and calves at weaning. It has now been determined that if nursing calves are also dewormed they will have an increased weaning weight. Treating cows regularly for parasites will increase milk production. You need to treat the cows and calves for ...
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Jan 18, 2024 · The first step in developing an effective parasite management program is understanding which parasites are present in your cattle. Several tools exist to evaluate the presence of parasites, the species present and effectiveness of a given treatment. Work with your herd veterinarian to conduct this evaluation.
