Effect of biotin supplementation on milk yield of Girolando cows reared in a tropical climate

  • P. J. B. QueirozEmail author
  • D. C. Silva
  • P. A. C. Borges
  • A. C. B. R. Pedroso
  • A. P. A. Vinhal
  • R. E. Rabelo
  • L. A. F. Silva
Regular Articles


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.


Cattle Lactation Pregnancy Production B-complex Vitamin B7 



The authors thank the Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) and the Fundação de Amparo à Pesquisa do Estado de Goiás (FAPEG) for providing scholarships during the study.

Compliance with ethical standards

Statement of animal rights

This research was approved by the Ethics Committee on Animal Use (CEUA-UFG), protocol no. 150/2010.

Conflict of interest

The authors declare that they have no conflict of interest.


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Copyright information

© Springer Nature B.V. 2019

Authors and Affiliations

  1. 1.Escola de Veterinária e ZootecniaUniversidade Federal de GoiásGoiâniaBrazil
  2. 2.Universidade Federal de JataíJataíBrazil

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