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Abstract

Compared to Bos taurus breeds, Bos indicus breeds of cattle present several differences in reproductive physiology. Follicular diameter at deviation and at the time of ovulatory capability are smaller in B. indicus breeds. Furthermore, B. indicus breeds have a greater sensitivity to gonadotropins,...

Author(s)
Baruselli, P. S.; SáFilho, M. F. de; Martins, C. M.; Nasser, L. F.; Nogueira, M. F. G.; Barros, C. M.; Bó, G. A.
Publisher
Elsevier, New York, USA
Citation
Theriogenology, 2006, 65, 1, pp 77-88
Abstract

In the present study, we tested the hypotheses that oocyte competence is compromised by a longer duration of follicular growth and that it is not affected by FSH starvation. Cows were allocated to short FSH (n=14), FSH starvation (n=13) and long FSH (n=13) groups. The first two groups were given...

Author(s)
Dias, F. C. F.; Costa, E.; Adams, G. P.; Mapletoft, R. J.; Kastelic, J.; Dochi, O.; Singh, J.
Publisher
CSIRO, Collingwood, Australia
Citation
Reproduction, Fertility and Development, 2013, 25, 3, pp 523-530
Abstract

The development of treatments that control follicular wave dynamics during the bovine oestrous cycle has resulted in interesting possibilities for the precise control of follicular wave emergence and the time of ovulation. For superstimulation, follicular wave emergence can be controlled by...

Author(s)
Bó, G. A.; Baruselli, P. S.; Chesta, P. M.; Martins, C. M.
Publisher
Elsevier, New York, USA
Citation
Theriogenology, 2006, 65, 1, pp 89-101
Abstract

Over the past two decades, research efforts have resulted in superstimulation protocols that are user-friendly, but embryo production has increased only marginally. Studies to-date have not adequately answered the question of whether superstimulatory protocols can be used to overcome the follicle...

Author(s)
Mapletoft, R. J.; Guerra, A. G.; Dias, F. C. F.; Singh, J.; Adams, G. P.
Publisher
Colégio Brasileiro de Reprodução Animal, Belo Horizonte, Brazil
Citation
Animal Reproduction (Belo Horizonte), 2015, 12, 3, pp 383-388
Abstract

Greater milk production in modern dairy cattle has led to greater nutritional needs, increased rates of post-partum anoestrus, reduced oestrus detection rates, lower conception and pregnancy rates and a higher incidence of embryonic mortality. In addition, larger herds have resulted in management...

Author(s)
Bó, G. A.; Mapletoft, R. J.
Publisher
British Cattle Veterinary Association, Quedgeley, UK
Citation
Cattle Practice, 2012, 20, 1, pp 19-28
Abstract

A study was designed to compare superovulatory responses in cattle when gonadotropin treatment followed 1 of 3 different treatments to synchronize follicular wave emergence. Animals at unknown stages of the oestrous cycle were randomly assigned to 3 groups: ablation of the 2 largest follicles per...

Author(s)
Baracaldo, M. I.; Martinez, M. F.; Adams, G. P.; Mapletoft, R. J.
Citation
Theriogenology, 2000, 53, 6, pp 1239-1250
Abstract

Four experiments were designed to determine the optimal dose of highly purified porcine FSH (Folltropin) for superovulation in 154 beef cattle. On day 9±1 of the oestrous cycle, animals were treated with a total dose of FSH ranging from 5 to 40 mg divided into twice-daily treatments over a 4-day...

Author(s)
Mapletoft, R. J.; Wu, M.; Murphy, B. D.
Publisher
University College Dublin, Dublin, Irish Republic
Citation
11th International Congress on Animal Reproduction and Artificial Insemination, University College, Dublin, Ireland, June 26-30 1988. Volume 2. Brief Communications, 1988, No. 173, pp 3pp.

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