The effect of varios stress factors on lactation in goats

Abstract

The article presents changes in the level of stress hormones and the degree of milk secretion in lactating goats under normal and various stress factors. The purpose of the study: to determine the level of stress hormones and the degree of milk secretion in lactating goats under normal and various stress factors.

The study was conducted on goats, biochemical analyzes were performed on blood and milk. Methods: Adrenaline and noradrenaline were studied by fluorimetric method. The quantitative level of adrenaline and noradrenaline hormones was determined depending on stress and lactation period. It was found that the level of these main hormones that produce milk is very high during lactogenesis. It was first established that stress hormones in goats depend on the lactation period and their influence on stress factors. The highest level of hormones was observed in the first days of lactogenesis, and decreased in the subsequent stages of lactopoiesis.

In conclusion, it was determined that low milk production is associated with an increase in the amount of adrenaline and noradrenaline in the blood of goats. At the same time, milk production decreases, the amount of fat, protein and lactose decreases, and the lactation period is shortened.