USE OF SODIUM CLOPROSTENOL AND OESTRADIOL BENZOATE IN BEEF CATTLE FEMALES INSEMINATED IN FIXED-TIME WITH OR WITHOUT ESTROUS RETECTION

Authors

  • Luiz Francisco Machado Pfeifer
  • Eduardo Madeira Castilho
  • Augusto Schneider
  • Elias Moura da Luz
  • Thomaz Lucia Júnior
  • Nelson José Laurino Dionello
  • Marcio Nunes Corrêa

DOI:

https://doi.org/10.5216/cab.v8i4.2703

Keywords:

Inseminação, Cio, Vacas

Abstract

The aim of this study was to evaluate the use of a prostaglandin F2α analogue (PGF2α) and oestradiol benzo-ate (ODB) in estrus synchronization programs. A hundred and eighty five non-lactating females divided in 4 groups were used. G1 (44) and G2 (46) received two applications of PGF2α (D0 and D11) and G3 (26) and G4 (37) received one application after 5 days of estrous detection. G1 and G3 also received a 1 mg ODB application 48 hours after the PGF2α. The pregnancy rate at AI was 42,2% for G1, 47,8% for G2, 32,1% for G3 e 57,6% for G4 (p>0,05) and of 38,4% and 51,4% for animals submitted to FTAI and estrous detection, respectively (p>0,05). This results show that pregnancy rates of females fixed time inseminated didn’t differ of that inseminated after estrus detection.

Key-words: Beef cattle, estrus synchronization, fixed time artificial insemination, prostaglandin.

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Published

2007-12-10

How to Cite

PFEIFER, L. F. M.; CASTILHO, E. M.; SCHNEIDER, A.; LUZ, E. M. da; LUCIA JÚNIOR, T.; DIONELLO, N. J. L.; CORRÊA, M. N. USE OF SODIUM CLOPROSTENOL AND OESTRADIOL BENZOATE IN BEEF CATTLE FEMALES INSEMINATED IN FIXED-TIME WITH OR WITHOUT ESTROUS RETECTION. Brazilian Animal Science/ Ciência Animal Brasileira, Goiânia, v. 8, n. 4, p. 815–821, 2007. DOI: 10.5216/cab.v8i4.2703. Disponível em: https://revistas.ufg.br/vet/article/view/2703. Acesso em: 16 jul. 2024.

Issue

Vol. 8 No. 4 (2007)

Section

Veterinary Medicine

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