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Production responses to internal parasite control in dairy cattle
Author(s) -
SPENCE SA,
FRASER GC,
DETTMANN EB,
BATTESE DF
Publication year - 1992
Publication title -
australian veterinary journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.382
H-Index - 59
eISSN - 1751-0813
pISSN - 0005-0423
DOI - 10.1111/j.1751-0813.1992.tb09928.x
Subject(s) - parasite hosting , biology , milk production , production (economics) , dairy cattle , zoology , microbiology and biotechnology , computer science , world wide web , macroeconomics , economics
SUMMARY A significant increase in milk production, averaging 164 litres per cow per lactation (a 4.8% increase), was seen after cows infected with gastrointestinal nematodes, paramphistomes and Fasciola hepatica were treated with broad‐spectrum anthelmintics. Three hundred and ninety pairs of cows from eight herds with year‐round calving were studied. One cow in each matched pair was given 7.5 mg/kg fenbendazole, 7.5 mg/kg levamisole hydrochloride and 15 mg/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.