Ethology of cross-breed cows milked in the presence or absence of calves/ Comportamento de vacas mesticas ordenhadas na presenca ou na ausencia de suas crias

• Published in: Acta scientiarum. Animal sciences Vol. 36; no. 4; p. 433
• Main Authors: da Silva, Vinicius Lopes, da Silva, Fabiano Ferreira, Silva, Roberio Rodrigues, Teixeira, Fabio Andrade, Costa-Lopes, Livia Santos, de Souza, Danilo Ribeiro
• Format: Journal Article
• Language: Spanish
• Published: Universidade Estadual de Maringa 01.10.2014
• Subjects: Analysis; Animal behavior; Behavior; Dairy cattle; Dairy products industry
• ISSN: 1806-2636; 1807-8672
• DOI: 10.4025/actascianimsci.v36i4.22959

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. Estudou-se o comportamento de vacas mesticas ordenhadas na presenca ou na ausencia de suas crias. O experimento foi conduzido no setor de Bovinocultura de Leite do Curso de Zootecnia da UESB, no municipio de Itapetinga, BA. Foram utilizadas 20 vacas mesticas Holandes x Gir, distribuidas em um delineamento em blocos casualizados, com dez repeticoes para cada tratamento sendo o periodo experimental de 31 dias durante a lactacao. Os resultados foram submetidos a analise nao parametrica, utilizando o teste Qui-quadrado a 5% de significancia, exceto as variaveis, tempo de permanencia na sala de ordenha e producao de leite dos animais, que foram realizadas analise de variancia e teste F a 5% de probabilidade. A producao de leite nao foi afetada, embora as vacas manejadas com a presenca da cria, durante a ordenha, terem apresentado maiores reatividades e atividades comportamentais e maior tempo na sala de ordenha. Palavras-chave: lactacao, producao, reatividade, tempo.