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 Author(s): CASTRO, N. A. de; LEONARDI, C. E. P.; SINGH, J.; SCHNEIDER, A.; GONÇALVES, P. B.; OLIVEIRA, F. C.; D'ÁVILA, C. A.; FERREIRA, R.; GASPERIN, B. G.; MOREIRA, E. M.; ANDRADE, J. de S.; PFEIFER, L. F. M. This study aimed to evaluate the role of prostaglandin F2a (PGF) on ovulation. In Experiment 1, cows were randomly allocated to two treatments to receive 150 ug of d-Cloprostenol (PGF Group, n = 12) o... ... |
 Author(s): ANDRADE, J. de S.; ZULIAN, J. P.; SINGH, J.; SETÚBAL, S. da S.; SILVA, R. R. da; SCHNEIDER, A.; PFEIFER, L. F. M. The objective of this study was to determine the ability of prostaglandin E2 (PGE2) to induce ovulation and expression of PGE2 receptor (EP2 and EP4) and COX genes (COX-1 and COX-2) in the ovary and p... ... |
 Author(s): BRAIR, V. L.; SCHMIDT, A. P. P.; FIGUEIRA, L. M.; VERGANI, G. B.; DIÓGENES, Y. P.; RANGEL, P. S. C.; SOUZA-FABJAN, J. M. G.; FONSECA, J. F. da The detection of ovulation is of great importance for the use of reproductive biotechnologies in small ruminants. The ovulation is efficiently determined by ultrasound (US), equipment that is not alwa... ... |
 Author(s): LIMA, J. T. M.; FONSECA, J. F. da; ESTEVES, L. V.; PENEIRAS, A. B. V.; LIMA, M. S. D.; BRANDÃO, F. Z. Abstract: The aim of this study was to determine the intervals between sponge removal and the onset of estrus, sponge removal and the first detected ovulation, and onset of estrus and the first ovulat... ... |
 Author(s): CAVALCANTI, A. dos S.; BRANDÃO, F. Z.; NOGUEIRA, L. A. G.; FONSECA, J. F. da Abstract: The objective of this study was to verify the effects of GnRH on ovulation and pregnancy of ewes subjected to a short-term synchronization of estrus. Santa Inês and crossbred Santa Inês/Dorp... ... |
 Author(s): OLIVEIRA JUNIOR, J. S. de; SILVA, G. M. da; MOREIRA, E. M.; ANDRADE, J. de S.; NUNES, V. R. R.; MOROTTI, F.; ANDRADE, E. R.; SENEDA, M. M.; PFEIFER, L. F. M. This study aimed to establish the relationship between antral follicle count (AFC), the time of puberty, and ovarian response in Nelore heifers subjected to timed-AI (TAI) protocols. Prepubescent Nelo... ... |
 Author(s): PFEIFER, L. F. M.; RPDRIGUES, W. B.; SILVA, K. C. da; ANACHE, N. A.; CASTRO, N. A.; CASTILHO, E. M.; NOGUEIRA, E. The objective of this study was to evaluate the effect of a PGF2α-analogue (PGF) on ovulation and pregnancy rates after timed artificial insemination (TAI) in cattle. In Experiment 1 cows receive... ... |
 Author(s): SOUZA-FABJAN, J. M. G.; BALARO, M. F. A.; BARBOSA, T. G. B.; FONSECA, J. F. da; FIGUEIRA, L. M.; TEIXEIRA, T. A.; CARVALHEIRA, L. R.; BRANDÃO, F. Z. The role of GnRH to synchronize ovulation and follicular emergence previous to superovulatory protocol, started on the first day of the estrous cycle (Day 0), was assessed in Santa Inês ewes. For estr... ... |
 Author(s): BONATO, G. C.; CÔRTES, L. R.; ARRAIS, A. M.; FIGUEIRA, L. M.; OLIVEIRA, T. de A.; MACHADO, V. de O.; MAIA, A. L. R. e S.; SOUZA-FABJAN, J. M. G.; FONSECA, J. F. da Abstract: Goats are seasonal breeders depending on breed and latitude. Among the hormonal methods used in controlled reproduction programs, there are those that mimic the activity of the corpus luteum... ... |
 Author(s): PIETROSKI, A. C. C. A.; BRANDÃO, F. Z.; SOUZA, J. M. G. de; FONSECA, J. F. da Abstract: The objective of this study was to compare the effect of hormonal treatment duration through the use of intravaginal sponges impregnated with 60 mg MAP for 6 (G6; n = 10), 9 (G9; n = 10) or... ... |
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