Effects of stress in thermal cows milk production: Review

Abstract

Brazil has highlighted the world's milk production, ranking fifth among the largest producers. Goiás ranks fourth in the ranking of states that produce milk with increased prospects over the years. The objective of this study describe about the effects of heat stress in the production of dairy cows. Heat stress influences the production and chemical composition of the milk, environment supply the making fundamental that provides thermal comfort to the animals. Seasonal variations influence the quality and quantity of milk produced, and animals of Indian origin (Bos indicus) are more tolerant to the tropical climate, when compared with European origin of animals (Bos Taurus), because of their greater ability to sweat and lower metabolic rate. However is right, the need for investment in facilities to enable environments with minimal conditions of temperature and relative humidity, which favors the production increase and improve the quality of milk produced.