Impacto produtivo e econômico da supressão da ordenha aos finais de semana em vacas F1 Holandês x Zebu (F1 HZ)

Abstract

The dairy farming is an activity of great economic and social importance in gen-erating country of jobs, income and taxes. Its exploitation of uninterrupted dur-ing the 365 days of the year, absorbing a significant number of workers. In order to create managements alternatives which promote reduction of working hours, aimed with this study was to evaluate the impact of the removal of milking on Saturdays and Sundays in milk production, the health of the mammary gland, the performance of the calves, and economic performance in F1 HZ cows raised on pasture. The experiment was conducted at the experimental farm owned by the Agricultural Research Company of Minas Gerais (EPAMIG), located in the municipality of Felixlândia-MG. To analyze the effect of suppression of milking the weekend, this experiment was performed in two stages with the use of 48 cows crossbred F1 Holstein x Zebu (HZ) with their calves in each stage of the experiment, these cows were distributed randomly divided between treatments, for a total of 6 treatments for each step. The following variables were analyzed, total milk production, average daily milk production, incidence of mastitis, milk quality, growth development incidence of diarrhea in calves. The management suppression of milking for a day or once a day in F1Holandes x Zebu cows Av-erage dairy production, interfere in a timely manner to milk production, but does not compromise the economic efficiency of the activity. F1HxZ cows showed no mastitis with the suppression of milking the weekend and had not changed the quality of milk. Calves over 100 days of life remaining with their mothers dur-ing the suppression of milking perform better.