DIFERENÇA NA QUANTIDADE DE LEITE OBTIDA ENTRE TRÊS ORDENHAS

Abstract

The objective of this work was to compare if there are statistical differences between the three milking, in the milk production of Holstein cows. In this study, data from 400 cows were used, where the animals were milked three times a day. Database contained 1116 total daily production records, divided into three milking, collected during one year. For to verify difference between the treatments, the analysis of variance and a test of means for comparison of treatments were used performed. Through the collected data, it was shown that there are differences (p <0.05) between the means of milk production in the three milking. The difference of the three milking remained from the months of January to August in the three milking, where the first milking of the day was the one that had greater production. In the months of September, October, November and December, no differences between the second and third milking were obtained. From the data of daily milk production, it is concluded that there is a difference between the three milking; being that the first milking was the one that registered greater production compared to the others.