| Literature DB >> 30879247 |
P J B Queiroz1, D C Silva2, P A C Borges2, A C B R Pedroso2, A P A Vinhal2, R E Rabelo3, L A F Silva2.
Abstract
The objective of this study was to evaluate the effect of biotin supplementation on milk yield and the reproductive efficiency in Girolando cows. The study was conducted on a dairy farm located in central Brazil, between April 2012 and December 2016. Thirty-six Girolando cows in their first lactation were used. The cows were distributed in two treatment groups, each with equivalent weight distributions. Control treatment (CT) cows (n = 18) received a diet without any supplemental biotin, whereas biotin treatment (BT) cows (n = 18) received a diet supplemented with 20 mg/day of biotin during lactation. Biotin supplementation caused a significant increase (p = 0.001) in milk yield in the second lactation, and a trend (p = 0.09) toward higher average production during the three lactations was evaluated. There was no statistically significant difference between the treatments in terms of reproductive efficiency. In conclusion, biotin supplementation (20 mg/day) during lactation for Girolando cows reared in a tropical climate is able to increase milk yield, but does not improve reproductive efficiency.Entities:
Keywords: B-complex; Cattle; Lactation; Pregnancy; Production; Vitamin B7
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Year: 2019 PMID： 30879247 DOI： 10.1007/s11250-019-01862-w
Source DB: PubMed Journal: Trop Anim Health Prod ISSN： 0049-4747 Impact factor: 1.559