EFFECT OF REPRODUCTIVE AND CLIMATIC CONDITIONS ON THE PRODUCTION OF EMBRYOS OF SUPEROVULATED BOER DOES

Authors

  • Sildivane Valcácia Silva Universidade Federal Rural de Pernambuco
  • Gustavo Ferrer Carneiro Universidade Federal Rural de Pernambuco - Unidade Acadêmica de Garanhuns
  • Maria Madalena Pessoa Guerra Universidade Federal Rural de Pernambuco
  • Oswaldo Christiano Gomes Neto Clínica de Equinos Pedro Zaluski
  • Andre Mariano Batista Universidade Federal Rural de Pernambuco
  • Aurea Wischral Universidade Federal Rural de Pernambuco

DOI:

https://doi.org/10.5216/cab.v11i3.5122

Keywords:

Animal reproduction

Abstract

This study was conducted to evaluate the effect of the reproductive (multiparous or nulliparous) and climatic (dry or rainy period) conditions on the number and quality of embryos collected from Boer does. Fifty does, being 33 multiparous and 17 nulliparous, were synchronized for oestrus with CIDR® devices for a period of 11 days and superovulated with 250UI of FSH-p. The animals were observed for oestrous behaviour at 12 h intervals, after CIDR® withdrawal. Does were mated and six days later flushed transcervically to recover the embryos. There was no significant difference (P>0.05) among the average number of structures and viable embryos recovered from the multiparous and nulliparous females. The average number of structures and viable embryos recovered from multiparous does had no significant difference (P>0.05) between dry and rainy periods. The average number of structures and viable embryos classified as G1 recovered from nulliparous was lower (P<0.05) in the dry period than in the rainy period. It could be concluded that the climatic condition did not affect the embryonic production of multiparous females, however the nulliparous were more sensitive to the dry period, presenting reduction in the number and quality of the collected embryos.

KEYWORDS: Does, embryo, thermal stress.

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Author Biographies

Sildivane Valcácia Silva, Universidade Federal Rural de Pernambuco

Doutoranda do programa de pós-graduação da Universidade Federal Rural de Pernambuco. Atuação na área de reprodução animal e biotecnologia.

Gustavo Ferrer Carneiro, Universidade Federal Rural de Pernambuco - Unidade Acadêmica de Garanhuns

Prof Dr da Universidade Federal Rural de Pernambuco em Fisiologia e Reprodução Animal.

Maria Madalena Pessoa Guerra, Universidade Federal Rural de Pernambuco

Profa Dra da Universidade Federal Rural de Pernambuco de Andrologia e Biotecnologia da Reprodução.

Oswaldo Christiano Gomes Neto, Clínica de Equinos Pedro Zaluski

Médico Veterinário autônomo

Andre Mariano Batista, Universidade Federal Rural de Pernambuco

Mestrando do programa de pós-graduação da Universidade Federal Rural de Pernambuco. Atuação na reprodução animal.

Aurea Wischral, Universidade Federal Rural de Pernambuco

Profa Dra da Universidade Federal Rural de Pernambuco em Obstetrícia Veterinária.

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Published

2010-10-01

How to Cite

SILVA, S. V.; CARNEIRO, G. F.; GUERRA, M. M. P.; GOMES NETO, O. C.; BATISTA, A. M.; WISCHRAL, A. EFFECT OF REPRODUCTIVE AND CLIMATIC CONDITIONS ON THE PRODUCTION OF EMBRYOS OF SUPEROVULATED BOER DOES. Brazilian Animal Science/ Ciência Animal Brasileira, Goiânia, v. 11, n. 3, p. 570–575, 2010. DOI: 10.5216/cab.v11i3.5122. Disponível em: https://revistas.ufg.br/vet/article/view/5122. Acesso em: 22 nov. 2024.

Issue

Vol. 11 No. 3 (2010)

Section

Veterinary Medicine

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