title: Production responses of lactating dairy cows and heifers given thiabendazole at parturition.
abstract: A field trial was conducted to examine the effects on productivity of dairy cattle in 6 herds given thiabendazole at parturition. Criteria examined were milk and fat production, calving interval, services per conception, culling rate, and (in a subset of cows) hematologic response. Analysis of the data for all cows as a group did not indicate a significant effect. For first-calf heifers in 1 herd, a significant (P less than 0.01) and economically important increase in milk production was observed; why the effect was seen was not determined.
mesh_terms: D000818:Animals; D002417:Cattle / Q000502:physiology*; D005260:Female; D007315:Insemination, Artificial / Q000662:veterinary; D007774:Lactation; D008892:Milk / Q000378:metabolism*; D010270:Parasite Egg Count / Q000662:veterinary; D011247:Pregnancy; D012098:Reproduction / Q000187:drug effects*; D013827:Thiabendazole / Q000494:pharmacology*
chemical_list: D013827:Thiabendazole