Production responses to internal parasite control in dairy cattle
1992
Spence, S.A. | Fraser, G.C. | Dettmann, E.B. | Battese, D.F. (New South Wales Agriculture, Wollongbar (Australia). Wollongbar Agricultural Inst.)
A significant increase in milk production, averaging 164 L per cow per lactation (a 4.8 percent increase), was seen after cows infected with gastrointestinal nematodes, paramphistomes and Fasciola hepatica were treated with broad-spectrum anthelmintics. From 8 herds, 390 pairs of cows with year-round calving were studied. One cow in each matched pair was given 7.5 mg per kg fenbendazole, 7.5 mg per kg levamisole hydrochloride and 15 mg per kg oxyclozanide in March, May and August of one year; the other cow in the pair received no anthelmintic. The number of nematode and trematode eggs was significantly decreased in the faeces of treated cows.
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