Growth and reproduction in dairy heifers following ...



Paper title Growth and reproduction in dairy heifers following administration of selenium pellets
Paper author(s) Jeffrey Wichtel, N. B. Williamson, A. L. Craigie
Proceedings title Proceedings of the New Zealand Trace Elements Group Conference
Date 1992
Conference J., Lee, M. A., Turner, K. N., Joblin, N. D., Grace, G. P., Savage
Abstract In 2 herds, yearling dairy heifers were given 2 or 4 intraruminal pellets containing elemental selenium 3 g or were not treated. During 7 months after treatment mean whole-blood glutathione peroxidase activity was higher in treated than in untreated heifers and, in one herd, which had the lowest initial values, was higher in those given 4 than in those given 2 pellets. In that herd also, but not in the other, liveweight gain was 10% higher than in the untreated heifers; 4 pellets had no greater effect than 2. Pregnancy rate and mating-start to conception interval were not significantly affected by Se treatment..

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