The use of insulin to improve fertility of timed-inseminated postpartum suckled beef cows

Authors

  • Augusto Schneider Universidade Federal de Pelotas
  • Luiz Francisco Machado Pfeifer Universidade Federal de Pelotas
  • Eduardo Schmitt Universidade Federal de Pelotas
  • Ivan Bianchi Universidade Federal de Pelotas
  • Marcelo Brandi Vieira Granja 4 Irmãos
  • Eduardo Gularte Xavier Granja 4 Irmãos
  • Francisco Augusto Burkert Del Pino Universidade Federal de Pelotas
  • Marcio Nunes Corrêa Universidade Federal de Pelotas

DOI:

https://doi.org/10.1590/S1678-3921.pab2010.v45.8312

Keywords:

Bos taurus, eCG, insulin, FTAI, weaning

Abstract

The objective of this work was to evaluate the effect of insulin alone or in association with equine chorionic gonadotropin (eCG) on the fertility of postpartum beef cows subjected to synchronization. A total of 340 cows was subjected to fixed time artificial insemination. In the trial 1, the cows were subjected to temporary weaning (TW), while in the trial 2 the same protocol was tested without TW. The addition of an insulin injection to a progesterone/eCG-based protocol without TW increased the pregnancy rate of beef cows with body condition score (BCS) equal to or lower than 2.5. Insulin had no effect on cows submitted to TW or with BCS equal to or higher than 3.0.

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Published

2011-01-27

How to Cite

Schneider, A., Pfeifer, L. F. M., Schmitt, E., Bianchi, I., Vieira, M. B., Xavier, E. G., … Corrêa, M. N. (2011). The use of insulin to improve fertility of timed-inseminated postpartum suckled beef cows. Pesquisa Agropecuaria Brasileira, 45(10), 1219–1221. https://doi.org/10.1590/S1678-3921.pab2010.v45.8312

Issue

v.45, n.10, out. 2010

Section

SCIENTIFIC NOTES