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Acta Scientiarum. Animal Sciences

On-line version ISSN 1807-8672


SILVA, Vinícius Lopes da et al. Ethology of cross-breed cows milked in the presence or absence of calves. Acta Sci., Anim. Sci. [online]. 2014, vol.36, n.4, pp.433-437. ISSN 1807-8672.

The behavior of crossbreed cows, milked in the presence or absence of their calves, was analyzed. The trial was conducted on the Dairy Cattle Sector of UESB School of Animal Science in Itapetinga BA Brazil. Twenty crossbreed Holstein x Gir cows were distributed in a randomized block design with 10 replications for each treatment for the experimental period of 31 days, during lactation. Results were analyzed by nonparametric chi-square test at 5% significance, except the variables time at the milking sector and milk production which were evaluated by analysis of variance and F test at 5% probability. Although cows with the presence of calves during milking had higher reactivity, behavioral activities and more time in the milking sector, milk production was not affected.

Keywords : lactation; production; reactivity; time.

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