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Abstract

Hormonal asynchronies during oestrus, related to the presence of suprabasal plasma-progesterone (P4) concentrations and a delayed ovulation, interfere with the fertility of repeat-breeder heifers (RBH). Since tubal dysfunction can occur in connection with hormonal asynchronies and constrained...

Author(s)
Bhupender Singh; Saravia, F.; Bǻge, R.; Rodríguez-Martínez, H.
Publisher
Danske Dyrlægeforening, Vanløse, Denmark
Citation
Acta Veterinaria Scandinavica, 2005, 46, 1/2, pp 1-12
Abstract

Pregnancy in cattle relates to the fertilizing capacity of the spermatozoa inseminated and it is dependent on a series of physiological events and interactions occurring in the female. Among these are the manifestation of normal oestrus, sperm transport and the establishment of a sperm reservoir in ...

Author(s)
Rodriguez-Martinez, H.; Bǻge, R.; Gustafsson, H.; Larsson, B.
Publisher
University of Bologna, Reggio Emilia, Italy
Citation
Proceedings of the International Symposium, Reggio Emilia, Italy, 8-9 October, 1999. From the first artificial insemination to the modern reproduction biotechnologies: traditional ways and new frontiers of animal production. , 1999, pp 119-137
Abstract

Repeat-breeder heifers (RBH) have been shown to present reproductive perturbations during spontaneous cyclicity, which affects oestrus and ovulation. Some of these disturbances (e.g. deviating hormone patterns) are also present during and after cycles of twice-weekly ovum pick-up (OPU), performed...

Author(s)
Bǻge, R.; Petyim, S.; Larsson, B.; Hallap, T.; Bergqvist, A. S.; Gustafsson, H.; Rodríguez-Martínez, H.
Publisher
CSIRO Publishing, Collingwood, Australia
Citation
Reproduction, Fertility and Development, 2003, 15, 2, pp 115-123