USE OF ANTIOXIDANTS TO IMPROVE THE PREGNANCY RATE IN BEEF CATTLE SUBMITTED TO A SYNCHRONIZATION PROTOCOL WITH PROGESTERONE (P4)

Authors

  • Ricardo Zanella Washington State University
  • Carlos Bondan
  • Julio Cesar Mendes Soares
  • Eraldo Lourenso Zanella
  • Marina Ragagnin de Lima

DOI:

https://doi.org/10.5216/cab.v11i3.3848

Keywords:

Estrus, Antioxidants

Abstract

Estrus synchronization with progesterone is commonly used in farms with better reproductive control. Free radicals production, i.e. oxidative stress, is associated with progesterone levels. The oxidative stress is responsible for aggression to the cellular membrane, leading to a lise and lipoperoxide formation. In this work, the antioxidant compensatory effect (Vitamins C and E) associated with the exogenous progesterone implant (P4), used in estrus synchronization protocols in cattle, was evaluated. Twenty-five cows were randomly selected in 5 different groups: 1) control without P4, 2) control with P4, 3) P4 + vitamin C and E, 4) P4 + vitamin E, 5) P4 + vitamin C. The lipid lipoperoxidation was measured trough Thiobarbituric acid reactive substances (TBA-RS) and Glutatione Peroxidase enzyme (GSHpx) at days 0 and 7 of the estrus synchronization protocol. The use of vitamin E, in this experiment, showed a better pregnancy rate, however, the results must be validated before orienting the use of the vitamin in cows synchronized with P4.  

KEYWORDS: Antioxidants, cows, oxidative stress, pregnancy rate, progesterone.

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Author Biographies

Ricardo Zanella, Washington State University

Médico Veterinário, Estudante de Doutorado, Washington State University, Department of Animal Science, Pullman WA, 99163

Carlos Bondan

Médico Veterinário professor da Faculdade de Agronomia e Medicina Veterinária, Curso de Medicina Veterinária, Universidade de Passo Fundo, 99001-970, Passo Fundo, RS, Brasil.

Julio Cesar Mendes Soares

Médico Veterinário professor da Faculdade de Agronomia e Medicina Veterinária, Curso de Medicina Veterinária, Universidade de Passo Fundo, 99001-970, Passo Fundo, RS, Brasil.

Eraldo Lourenso Zanella

Médico Veterinário professor da Faculdade de Agronomia e Medicina Veterinária, Curso de Medicina Veterinária, Universidade de Passo Fundo, 99001-970, Passo Fundo, RS, Brasil.

Marina Ragagnin de Lima

Médica Veterinária autônoma, Caçapava do Sul/RS

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Published

2010-10-01

How to Cite

ZANELLA, R.; BONDAN, C.; SOARES, J. C. M.; ZANELLA, E. L.; DE LIMA, M. R. USE OF ANTIOXIDANTS TO IMPROVE THE PREGNANCY RATE IN BEEF CATTLE SUBMITTED TO A SYNCHRONIZATION PROTOCOL WITH PROGESTERONE (P4). Brazilian Animal Science/ Ciência Animal Brasileira, Goiânia, v. 11, n. 3, p. 477–481, 2010. DOI: 10.5216/cab.v11i3.3848. Disponível em: https://revistas.ufg.br/vet/article/view/3848. Acesso em: 22 nov. 2024.

Issue

Vol. 11 No. 3 (2010)

Section

Animal Production

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