BODY CONDITION SCORE (BCS) AND CALVING ORDER ON MILK PRODUCTION AND COMPOSITION IN ZEBU CATTLE

  • Adriano Henrique do Nascimento Rangel Universidade Federal do Rio Grande do Norte
  • Thalita Polyana Monteiro de Araújo
  • Henrique Rocha de Medeiros
  • Dorgival Morais de Lima Júnior Universidade Federal de Alagoas
  • Kyvia Dias de Andrade
  • Rodrigo Coutinho Madruga
  • Rayssa Freire Bezerril
  • Luciano Patto Novaes

Resumo

The present study aimed to evaluate the effect of body condition score (BCS) and calving order on milk production and composition in zebu cattle participating in an official dairy cow tournament. We analyzed milk samples from 47 Gyr, Guzerat and Red Sindhi cows, distributed into classes with respect to lactation stage, milk production, and body condition score. Means for milk composition were within standard ranges for zebu cattle, with the greatest variation recorded for fat and protein content. Fat content was higher for animals in the first month of lactation, with a mean of 5.69%, and protein content was highest after 60 days with an average of 3.55%. A positive correlation of 0.38% (p<0.05) was observed between milk fat and protein content. First calving animals exhibited lower mean milk production than those in their second calving or more. Animals with a BCS in class II demonstrated higher daily production up to 30 days of lactation. Body condition score influenced the milk production of zebu cows participating in a dairy cow competition up to the 30th day of lactation.

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Publicado
2015-07-16
Seção
Original Articles / Artigos de Pesquisa

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