Abstract
Reproductive performance is one of the important factors for
determining the economics of livestock production. Reproduction is a
complex
luxurious process affected by environmental factors and involves a
series of physiological processes and supported by endocrine system
through release of various hormones A sound knowledge of reproductive
functioning in terms of interplay of hypothalamic, gonadotropic
and gonadal hormones, with synergistic and antagonistic influences from
other hormones and factors involved in the regulation of various
reproductive stages, accurate oestrus detection, timely pregnancy
diagnosis and early detection of non-conceived stock can be expected to
lead to an improvement of the reproductive efficiency. The different
phases of reproductive cycle and pregnancy are regulated by intricate
sequential events and interactions between hypothalamic releasing
hormones, hormones secreted from the pituitary and sex steroids secreted
by the ovary. Lack of integration or synchronization or endocrine
imbalances at any phase of the sequence may result in reproductive
failure.
This paper focuses on use of various hormones for detection of estrus
and early pregnancy in livestock.
Application of Radioimmunoassay for Livestock Fertility Management by Sukanta Mondal in BJSTR
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