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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...

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