M A C M Bergamaschi

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Corticotrophin-releasing hormone (CRH) is a 41 amino-acid peptide which was isolated and characterised exactly two decades ago (1). It is distributed heterogeneously throughout the central nervous system (CNS) (2) and, due both to its ability to stimulate the release of adrenocorticotrophic hormone (ACTH) from the pituitary and to its numerous(More)
Maternal recognition of pregnancy in the cow requires successful signaling by the conceptus to block luteolysis. Conceptus growth and function depend on an optimal uterine environment, regulated by luteal progesterone. The objective of this study was to test strategies to optimize luteal function, as well as prevent a dominant follicle from initiating(More)
In cattle, embryonic and fetal losses are the major causes of reproductive failure. Losses associated with failure in the process of maternal recognition of pregnancy can amount to as much as 30%. Successful establishment of pregnancy depends on a delicate balance between luteolytic mechanisms inherent to the endometrium at the end of diestrus and(More)
Intensive grazing systems for beef females, based on abundant availability of high quality forages and supplementary concentrates, may affect fetal development. The objective of this study was to determine the effect of grazing system on length of gestation, fetal development, and characteristics of the calf at birth. Twenty-four pregnant (bred to Nellore(More)
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