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Abstract

Two experiments were conducted to assess a hormonal strategy developed to reduce animal handling for timed artificial insemination (TAI) with sex-sorted semen. Four-hundred ninety-one (491) suckled beef cows received a progesterone (P4) intravaginal device and 2 mg intramuscular (im) injection of...

Author(s)
Silva, M. A. V.; Santos, C. S.; França, I. G.; Pereira, H. G.; SáFilho, M. F.; Freitas, B. G.; Guerreiro, B. M.; Faquim, A.; Baruselli, P. S.; Torres-Júnior, J. R. S.
Publisher
Elsevier, New York, USA
Citation
Theriogenology, 2018, 114, pp 159-164
Abstract

The aim of this study was to determine the relationship between the intensity of estrus expression on the ovulatory follicle diameter (OFD) and its effect on the conception rate in zebu females managed under a FTAI program. On a random day of the estrous cycle, day 0, 308 Nellore females received...

Author(s)
Ferraz, P. A.; Loiola, M. V. G.; Rodrigues, A. S.; Lima, M. C. C.; Bittencourt, T. C. B. dos S. C. de; Ribeiro Filho, A. de L.
Publisher
Universidade Federal de Goiás, Escola de Veterinária, Goiânia, Brazil
Citation
Ciência Animal Brasileira, 2017, 18, pp e-37643
Abstract

The aim of the present study was to evaluate the effects of the PGF treatment given at the onset of a synchronization of ovulation protocol using a norgestomet (NORG) ear implant on ovarian follicular dynamics (Experiment 1) and pregnancy per AI (P/AI; Experiment 2) in cyclic (CL present) Bos...

Author(s)
SáFilho, M. F.; Marques, M. O.; Gimenes, L. U.; Torres Júnior, J. R. S.; Batista, E. O. S.; Carvalho, J. P. B.; Baruselli, P. S.
Publisher
Elsevier B. V., Amsterdam, Netherlands
Citation
Animal Reproduction Science, 2014, 144, 1/2, pp 1-5
Abstract

In the current review the main fundamental biological differences in reproductive function between Bos taurus and Bos indicus cattle are discussed. Breed differences regarding puberty, estrous cycle patterns estrous behavior, acquisition of ovulatory capacity, ovarian structures and reproductive...

Author(s)
Sartori, R.; Bastos, M. R.; Baruselli, P. S.; Gimenes, L. U.; Ereno, R. L.; Barros, C. M.
Publisher
Nottingham University Press, Nottingham, UK
Citation
Reproduction in domestic ruminants VII. Proceedings of the Eighth International Symposium on Reproduction in Domestic Ruminants, Anchorage, Alaska, September 2010, 2010, pp 357-375
AbstractFull Text

The experiment was conducted to observe the effect of Buserelin acetate administration on improvement of conception rate in crossbred cows, suffering from repeat breeding syndrome (RBS). Total sixteen crossbred cows (Gir cows and their crosses with Jersey & Holstein Friesian) with regular oestrous...

Author(s)
Rangnekar, M. N.; Bakshi, S. A.; Deopurkar, V. L.; Chinchkar, S. R.; Birade, H. S.; Gulavane, S. U.; Hol, B. G.; Jadliav, P. D.
Publisher
Bombay Veterinary College, Alumni Association, Bombay, India
Citation
Journal of Bombay Veterinary College, 2005, 13, 1/2, pp 26-27
Abstract

The present study investigated how the timing of the administration of estradiol benzoate (EB) impacted the synchronization of ovulation in fixed-time artificial insemination protocols of cattle. To accomplish this, two experiments were conducted, with EB injection occurring at different times: at...

Author(s)
Ayres, H.; Martins, C. M.; Ferreira, R. M.; Mello, J. E.; Dominguez, J. H.; Souza, A. H.; Valentin, R.; Santos, I. C. C.; Baruselli, P. S.
Publisher
Elsevier, Amsterdam, Netherlands
Citation
Animal Reproduction Science, 2008, 109, 1/4, pp 77-87
Abstract

Considering that there is limited information about the preovulatory LH surge in Zebu cattle (Bos indicus), the purpose of the present work was to assess the LH surge in Nelore cows during the estrous cycle and after ovarian superestimulation of ovarian follicular development with FSH. This...

Author(s)
Monteiro, F. M.; Melo, D. S.; Ferreira, M. M. G.; Carvalho, L. M.; Sartoreli e Sartoreli, E.; Ederhardt, B. G.; Nogueira, G. de P.; Barros, C. M.
Publisher
Elsevier, Amsterdam, Netherlands
Citation
Animal Reproduction Science, 2009, 110, 1/2, pp 128-138
Abstract

Induction of ovulation for timed artificial insemination (TAI) with the Ovsynch protocol was evaluated in 49 anoestrous and lactating Bos taurus × Bos indicus cows. Palpation per rectum and transrectal ultrasonography were used on Days -30, -20, -10 and 0 (start of treatment) to confirm anoestrus...

Author(s)
Ahuja, C.; Montiel, F.
Publisher
Akadémiai Kiadó, Budapest, Hungary
Citation
Acta Veterinaria Hungarica, 2004, 52, 4, pp 501-508
Abstract

The objective of this study was to evaluate protocols for synchronizing ovulation in beef cattle. In experiment 1, Nelore cows (Bos indicus) at random stages of the oestrous cycle were assigned to 1 of the following treatment groups: (1) GP controls (non-lactating, n = 7) received GnRH agonist...

Author(s)
Barros, C. M.; Moreira, M. B. P.; Figueiredo, R. A.; Teixeira, A. B.; Trinca, L. A.
Citation
Theriogenology, 2000, 53, 5, pp 1121-1134

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