Luteolytic effectiveness of Preloban® or Croniben® products in holstein heifers

Authors

  • Alfredo José Ferreira Melo Agência Paulista de Tecnologia dos Agronegócios, Polo Regional de desenvolvimento Tecnológico dos Agronegócios do Centro Sul, Piracicaba, SP
  • Vinicius Antônio Pelissari Poncio Agência Paulista de Tecnologia dos Agronegócios, Polo Regional de desenvolvimento Tecnológico dos Agronegócios do Centro Sul, Piracicaba, SP
  • Fernanda Lucci Mucci Prefeitura de Pindamonhangaba, Departamento de Agricultura, Pindamonhangaba, SP
  • Afonso Aurélio Carvalho Peres Universidade Federal Fluminense, Departamento de Entranharia de Agronegócios, Volta Redonda, RJ
  • Claudio Alvarenga de Oliveira Universidade de São Paulo, Faculdade de Medicina Veterinária e Zootecnia, São Paulo, SP
  • Rafael Herrera Alvarez Agência Paulista de Tecnologia dos Agronegócios, Polo Regional de desenvolvimento Tecnológico dos Agronegócios do Centro Sul, Piracicaba, SP

DOI:

https://doi.org/10.17523/bia.v71n3p250

Keywords:

bovine, cloprostenol, luteolysis, estrus synchronization

Abstract

The objective was to evaluate the effect of intramuscular injection of two different commercial products of cloprostenol (Preloban® or Croniprest®) on luteal regression of Holstein heifers. On a random day of the estrous cycle, 36 heifers were synchronized with an estradiol-progestin-PG-estradiol treatment. Twelve days after withdrawal of progestin, heifers were randomly divided into 3 groups of 12 animals. Groups 1 and 2 received the equivalent of 150 µg of d-cloprostenol of Croniben® or Preloban® products, while group 3 received 2 ml of saline. Estrus was detected with the aid of the dispositive Estrotec® on the following five days, and heifers that expressed estrus were inseminated. Blood samples were collected daily during the periods of 0, 24, 48 and 72 hours after the injection of d-cloprostenol for measurement of plasma progesterone by radioimmunoassay. Pregnancy diagnosis was performed by ultrasonography 40 days after insemination. The interval between the manifestation of estrus and the Croniben® or Preloban® injection was 68.4 ± 4.4 and 63.3 ± 4.6 hours, respectively (P>0.05). The distribution of estrus occurred in the period of 36 to 108 hours. With the exception of two heifers with incomplete luteolysis, all animals treated with d-cloprostenol showed complete luteolysis. The conception rate was 50.0% and 54.5% for Preloban® and Croniben® treatments, respectively (P > 0.05). We conclude that Preloban® and Croniben® products have similar effectiveness to induce luteolysis and and to synchronize the estrus of Holstein heifers. Thus, producer may choose any one of them without risk of compromising reproductive performance.

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Published

2014-03-01

Issue

Section

ANIMAL REPRODUCTION

How to Cite

Luteolytic effectiveness of Preloban® or Croniben® products in holstein heifers. (2014). Bulletin of Animal Husbandry, 71(3), 250-255. https://doi.org/10.17523/bia.v71n3p250

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