Influence of meteorological elements on behavioral responses of gir cows and effects on milk quality

This study aimed to analyze the principal components of meteorological variables, physiological and behavioral response cows subjected different cooling times their influence on milk quality, in dry rainfall periods, establish multiple regression models for quality. The data used came from an experiment conducted Agreste Region Pernambuco. pre-milking time was 10, 20, 30 min. control (without cooling). Sixteen multiparous lactating Gir were selected. Data analyzed by component analysis a applied determine There strong relationship between somatic cell count (SCC) activity animal shade dry, lying rainfall, with increased SCC cow milk. It possible two quality periods. According analysis, meet thermal requirement animals 20 min., regardless season milking shift.