1110DewormingStrategiessr.cfm Combination deworming programs can pay large dividends
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Combination deworming programs can pay large dividends

Feedlot operators are turning to veterinarians and nutritionists to help prepare cattle for the best defenseagainst fall parasites, according to Gary Sides, Ph.D., cattle nutritionist, Veterinary Operations, Pfizer Animal Health.

Controlling parasites in the feedlot is not something that we do just for the immune system, as there are direct performance benefits as well. In fact, research has shown that parasites could cost the industry up to $3 billion annually in lost weight gains, poor feed conversion and increased disease.High feed prices greatly magnify these factors. Using a solid deworming program can help operators take advantage of all possible performance benefits.

Poor decisions surrounding appropriate parasite control product selection can end up costing much more in the long run. As a feedlot operator, think of it this way: It only takes approximately one extra pound of gain to make up for the cost of a complete deworming program.

Depending on your geographic location, feedlot cattle will generally experience the best response when dewormed with a broad-spectrum avermectin product. When evaluating what dewormer will be the most effective on a specific group of cattle, consider the following:

--Make sure the product is labeled to killinhibited Ostertagia ostertagi, one of the most damaging internal parasites--often a weakness of using an oral suspension (drench).

--Look for a product that leaves little to no trail at the injection site.

--There are no products that are completely effective against all internal and external cattle parasites. There may be cases where an avermectin in combination with an oral suspension may be cost-effective.

To recognize optimal dividends, consider combining a drench and an injectable or pour-on treatment protocol. Your consultants can help you to evaluate if a combination treatment would help improve your cattle's treatment response.

There are times when there is not any one single parasiticide treatment that will control all parasites perfectly. Avermectins do an excellent job of controlling external parasites and inhibited Ostertagia ostertagi, also known as the brown stomach worm, but may not be as effective against specific intestinal parasites. The oral suspension will do a better job on intestinal parasites and liver flukes, but does a poor job at defending animals against inhibited Ostertagia and has no effect on external parasites. If biting lice have historically been an issue or concern for your operation, you should consider using an avermectin pour-on product. These cattle would probably also respond to an added treatment of an albendazole or benzimidazole drench.

If you are unsure which parasites may be endangering your herd the most, consult your local veterinarian before implementing any new treatment procedures.

Trying to save a dollar on parasite control at processing could easily cost you 20 pounds or more at sale time. Cattle values and the inflated cost of feedstuffs are too high not to realize the added performance benefits possible when using a broad-spectrum deworming program. Evaluate your options with your consultants and choose your deworming products carefully to ensure you are getting the full benefit of each dollar spent.



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