<b>Biostimulation and reproductive performance of beef cows</b> - DOI: 10.4025/actascianimsci.v28i4.602

  • Sergio Augusto Ferreira de Quadros UFSC
  • José Fernando Piva Lobato UFRS
DOI: https://doi.org/10.4025/actascianimsci.v28i4.602

Abstract

With the purpose of studying the effect of biostimulation on reproductive traits, 82 primiparous beef cows were distribuited into two treatment groups: biostimulated (BE) or not (NE) by teaser bulls during 83 days before the breeding season. Before the start of artificial insemination period, accumulated cycling rates were 21 .05% (BE) and 6.81% (NE). Higher serum progestrone levels were observed in biostimulated cows, but response depends on nutritional status (body condition score). When associated with weaning before the start of insemination period, biostimulation did not affect pregnancy rate (BE=97.38%; NE=100%), mean insemination julian date (BE=332.9; NE=333.21), nor repeat breeding rate (BE=21%; NE=19%).

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Author Biography

Sergio Augusto Ferreira de Quadros, UFSC
possui graduação em Medicina Veterinária pela Universidade Federal do Rio Grande do Sul (1983) , mestrado em Zootecnia pela Universidade Federal do Rio Grande do Sul (1991) e doutorado em Zootecnia pela Universidade Federal do Rio Grande do Sul (2003) . Atualmente é Professor Assistente da Universidade Federal de Santa Catarina. Tem experiência na área de Zootecnia , com ênfase em Produção Animal. Atuando principalmente nos seguintes temas: bioestimulação. Currículo Lattes
Published
2008-02-13
How to Cite
Quadros, S. A. F. de, & Lobato, J. F. P. (2008). <b>Biostimulation and reproductive performance of beef cows</b&gt; - DOI: 10.4025/actascianimsci.v28i4.602. Acta Scientiarum. Animal Sciences, 28(4), 401-407. https://doi.org/10.4025/actascianimsci.v28i4.602
Issue
Vol 28 No 4 (2006)
Section
Animal Breeding and Reproduction

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