EFFECT OF ESTRUS SYNCHRONIZATION WITH DOUBLE INJECTION OF D-CLOPROSTENOL ASSOCIATED OR NOT WITH eCG ON THE REPRODUCTIVE PERFORMANCE OF ½ BOER/SRD GOATS RAIZED IN THE SEMI-ARID ZONE OF NORTHEASTERN BRAZIL

Authors

  • Daniel Maia Nogueira Embrapa Semi-Árido
  • Edilson Soares Lopes Júnior Universidade Federal do Vale do São Francisco (UNIVASF), Petrolina, Pernambuco, Brasil
  • Pedro Humberto Felix de Sousa Universidade do Estado da Bahia (UNEB), Juazeiro, Bahia, Brasil
  • Geraldo Miranda de Carvalho Júnior Centro de Reprodução de Andorinha

Keywords:

caprino, fêmea, gonadotrofina, tratamento hormonal

Abstract

he aim of this study was to evaluate the effect of double injection of d-cloprostenol associated or not with equine chorionic gonadotrophin (eCG) over the reproduction performance of ½ Boer/non-genotype goats raised in the semi-arid region of North-eastern Brazil. Forty goats were distributed into two estrus synchronization protocols, as following: T1 (n = 20) two injections of 75 µg d-cloprostenol at seven days interval; T2 (n = 20), similar to the previous protocol, differing only by the addition of 300 IU eCG at the last d-cloprostenol injection. Percentage of animals in estrus (65% vs. 85%) and interval from the end of treatment to estrus onset (22.8 ± 13.4 h vs. 17.2 ± 7.6 h) did not differ (P>0.05) between T1 and T2, respectively. However, T2 showed a larger estrus length (P<0.05) than T1; 47.3 ± 12.3 h and 32.9 ± 11.9 h, respectively. It was observed a fertility and prolificity rate, respectively, of 61.5% and 1.4 for T1 and 41.2% and 1.8 for the T2, not having significant difference between treatments. Double injections of d-cloprostenol at seven days interval showed technically viable. In the present study, the addition of 300 IU eCG did not improve fertility nor prolificity rates.

KEY WORDS: Estrus synchronization, goats, gonadotrophin, productive performance, prostaglandin.

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Author Biography

Daniel Maia Nogueira, Embrapa Semi-Árido

 

 

 

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Published

2009-07-03

How to Cite

NOGUEIRA, Daniel Maia; JÚNIOR, Edilson Soares Lopes; SOUSA, Pedro Humberto Felix de; JÚNIOR, Geraldo Miranda de Carvalho. EFFECT OF ESTRUS SYNCHRONIZATION WITH DOUBLE INJECTION OF D-CLOPROSTENOL ASSOCIATED OR NOT WITH eCG ON THE REPRODUCTIVE PERFORMANCE OF ½ BOER/SRD GOATS RAIZED IN THE SEMI-ARID ZONE OF NORTHEASTERN BRAZIL. Brazilian Animal Science/ Ciência Animal Brasileira, Goiânia, v. 10, n. 2, p. 618–626, 2009. Disponível em: https://revistas.ufg.br/vet/article/view/3399. Acesso em: 6 dec. 2025.

Issue

Vol. 10 No. 2 (2009)

Section

Veterinary Medicine

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Copyright (c) 2009 Brazilian Animal Science/ Ciência Animal Brasileira

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