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Effect of progesterone concentration, duration of proestrus and follicular diameter on the conception rate in Nelore heifers subjected to artificial insemination after detection of estrus or inseminated at fixed time.

Grant number: 09/06897-7
Support Opportunities:Scholarships in Brazil - Master
Start date: September 01, 2009
End date: July 31, 2011
Field of knowledge:Agronomical Sciences - Veterinary Medicine - Animal Reproduction
Principal Investigator:José Luiz Moraes Vasconcelos
Grantee:Thiago Martins
Host Institution: Faculdade de Medicina Veterinária e Zootecnia (FMVZ). Universidade Estadual Paulista (UNESP). Campus de Botucatu. Botucatu , SP, Brazil

Abstract

This study aimed to evaluate the interference of progesterone concentration during the follicular development in heifers submitted to synchronization protocol, and the influence of follicular diameter and length of proestrus on fertility in animals undergoing artificial insemination or conventional fixed time.

News published in Agência FAPESP Newsletter about the scholarship:
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VEICULO: TITULO (DATA)
VEICULO: TITULO (DATA)

Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
MARTINS, T.; PERES, R. F. G.; RODRIGUES, A. D. P.; POHLER, K. G.; PEREIRA, M. H. C.; DAY, M. L.; VASCONCELOS, J. L. M.. Effect of progesterone concentrations, follicle diameter, timing of artificial insemination, and ovulatory stimulus on pregnancy rate to synchronized artificial insemination in postpubertal Nellore heifers. Theriogenology, v. 81, n. 3, p. 446-453, . (09/06897-7)
Academic Publications
(References retrieved automatically from State of São Paulo Research Institutions)