Merck Technical Vet Harold Newcomb Describes the "When, Where and What" of Parasite ControlTue, 22 May 2018 12:22:14 CDT
Two hundred dollars-that’s how much parasites can cost producers over the lifetime of an animal.
Research shows that the organisms affect everything from gain and final grade to reproduction.
“Animals that were strategically dewormed probably had weaning weights that were somewhere between thirty and fifty pounds heavier than non-strategically dewormed animals,” said Harold Newcomb, technical veterinarian for Merck Animal Health. “You saw that if you strategically dewormed the cowherd, you could see an increase in the conception rate of 10 to 11 percent. Those are huge economic figures.”
To watch a brief video clip featuring Harold Newcomb, technical veterinarian for Merck Animal Health, talk about why you should be giving your deworming plan some critical thought, click or tap the PLAYBOX in the window, below.
That’s why it’s so important to use the right products at the right time.
“Well, strategic means that we’re going to deworm that animal at a time that we can have the biggest impact on the parasites that are in the animal, but on the pasture, as well,” Newcomb said. “Because 90 to 95 percent of your parasite problem is on the pasture in the form of larvae and eggs, ok? So if we just deworm the cow or the animal without any consideration of what we’re doing out here, we don’t get very far.”
Plans vary by region, but he generally recommends targeting six to eight weeks after grass green-up and then following up after that. Treatment is also more effective when using different classes in combination, as opposed to using the same dewormer every time.
“And so, eventually, over time and repeated use of those products, you will select for a population of worms that are able to live through that treatment, and that’s the worms that are out there on your pasture,” he explained. “But if you strategically deworm and use the combination classes, you should be able to cut down on the amount of parasites that are out there in your pasture and actually, the amount of resistant parasites that could be out there.”
Newcomb says there is no “cookie cutter” approach, so he gives this tried-and-true advice.
“Work with a veterinarian or some parasitologist,” he concluded, “and develop a antiemetic or deworming program based off of what their goals are for their operation.”
Bottom line: it pays to keep parasites at bay.
Source - Certified Angus Beef
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