Revisão de literatura: parâmetros fisiológicos e reprodutivos de machos bovinos criados no Brasil.

Abstract

Livestock farming is the economic activity that occupies a vast expanse of land in Brazil. today the country is responsible for more than half the world market for beef and milk production Brazil stands out as the fifth largest producer, there is noted the economic importance of this activity in the country. The breeding cattle is an extreme need for activity for farmers raise the most of your herd's potential be it for milk or meat, bovine reproduction relates directly with internal and external factors such as genetic and climatic factors that interfere directly in the reproductive ability of animals, dairy farming in Brazil is highlighted, but many producers are unaware that high temperature indices influence negatively on production and reproduction especially when we relate the creation of specialized cattle breeds animals of European origin, known for its high reproductive capacity and precocity, very desired characteristics for those who follow in the field of dairy cattle, but high temperatures also negatively affect animals adapted to the tropical climate by reducing the sperm percentage, sexual activity shortening the time life of male bovine animals in the herd when they are raised in extensive systems due to exposure to weather intemperes and sudden changes in temperature conditions that interfere with female fertility regardless of race or sex either Indian or European exposure to adverse factors inhibiting factors physiological and reproductive in males and cows inhibiting hormones and successively decreasing the reproductive capacity, affecting the whole system, because milk or cutting cattle depend on the reproductive abilities of the same to be done a successful job, on the above work had aimed to carry out a literature review about the reproductive and physiological parameters of male bovine.