ABSTRACT

The proteinaceous chemical substance produced by specialized endocrine glands located in different parts of body and by neurons called neurosecretory cells. The production and secretion of hormones according to the need of the physiological function also acts as a behaviour regulating mechanism in both invertebrates and vertebrates’ Hormonal influences on behaviour can be roughly divided in two categories: educational and organizational effects. In educational effects hormones act as triggering influences in organizational effects of hormones are manifested during an organism’s development. Techniques to Explore the Interrelationship between hormones and behavior investigations have used several techniques to explore the interrelationship between hormones and behavior. These include Extirpation or removal, of a particular endocrine gland to assess the absence of a specific hormone on behavior. Six Goats (F-046, F-048, F-049, F-050, F- 051 F-152) mature female goats (4-7 years old) weighing an average of 58.7 Kg were individually penned in open side structures. They were fed with fodder and a concentrate ration once a day and water were available ad libitum. Bioassays to indirectly assess circulating hormones levels by measuring a secondary characteristic such as a skin gland that is dependent on a particular hormone. Radioimmunoassay to directly measure circulating levels of a hormone though the use of immunological methods Autoradiography to localize the sites at which hormone uptake occurs. The present findings showed that the adult intact females are having significant amount of all the reproductive hormones in urine at the various reproductive phases of the entire cycle this research hypothesized that the hormones are secreted at the highest level when they receive the mating cue from the opposite sex until, the hormone secretion level is to maintain and fulfill the normal physiological functions. In this study, peak frequencies of both LH and Testosterone were high during ovulating females, low in proestrus phase of females it may increase at the time of arousal thereafter. The peak magnitude of LH showed a progressive decrease in female. The peak magnitude of Testosterone, however, increased after 18 weeks of age. This appears to trigger the increased Testosterone concentration which is necessary to suppress the LH secretion after sexual maturity. Keywords: Reproductive phase, Estrus, hormones, Radioimmunoassay
Publication date: 01/10/2020

https://ijbpas.com/pdf/2020/October/MS_IJBPAS_2020_5200.pdf

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https://doi.org/10.31032/IJBPAS/2020/9.10.5200