The Effect of Combined Treatment with an Avermectin Endectocide and Flukicide on Productivity of Replacement Heifers
نویسنده
چکیده
Introduction Gastrointestinal nematodes, external parasites, and Fasciola hepatica (liver fluke) can all adversely affect productivity of cattle.(1-5) Previously, little to no work has been done to quantify the effect of treating yearling replacement beef heifers for both gastrointestinal nematodes and bovine liver fluke on weight gain, body condition scores, pregnancy rates, and subsequent weaning weights of first-born calves. An independent study was conducted in a fluke-endemic area of Louisiana to evaluate the impact of production losses caused by gastrointestinal roundworms and liver flukes.
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