Professional paper
EFFECT OF HIGH TEMPERATURE ON THE METABOLISM AND REPRODUCTION OF DAIRY COW
Sara Koska
; Agronomski fakultet Sveučilišta u Zagrebu, Zagreb, Hrvatska
Krešimir Salajpal
; Agronomski fakultet Sveučilišta u Zagrebu, Zagreb, Hrvatska
Abstract
High environmental temperatures, often in combination with high relative humidity resulting thermal stress, and the body in such conditions can not be cool and encourages different adaptive mechanisms. In dairy cows in the response to heat stress alters the metabolism to become sluggish. Decreased feed intake and milk production, altered metabolism of minerals, increased water intake and decreased its loss in the urine and feces, and increased sweating, salivation, and rectal temperature. Heat stress in dairy cows has the most significant effect on the reproductive system. This paper describes the effect of high temperature and thermal stress on the body of dairy cows, with an emphasis on reproduction and metabolism. Shown are typical symptoms that show cows and processes that occur in the body in response to high temperatures, as it comes to heat stress, the ways in which the cow is struggling with adverse impacts to the environment and trying to reduce the harmful effects of stress. Furthermore, brief basic methods to mitigate the effects of heat on the body of dairy cows, and the basic principles of nutrition in the conditions of high environmental temperature are shown.
Keywords
heat stress; cows; response to stressful conditions; metabolism; reproductive system
Hrčak ID:
97629
URI
Publication date:
30.11.2012.
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