Exogenous ocitocin and calf presence on performance and milk quality of crossbred cows

Authors

  • Wagner Azis Garcia de Araújo Universidade Federal de Viçosa, Departamento de Zootecnia, Viçosa, MG
  • Carlos Guilherme Vasconcelos Carvalho Empresa de Pesquisa Agropecuária de Minas Gerais, Instituto Técnico de Agropecuária e Cooperativismo, Pitangui, MG
  • Marcos Inácio Marcondes Universidade Federal de Viçosa, Departamento de Zootecnia, Viçosa, MG
  • Ana Júlia Rezende do Sacramento Empresa de Pesquisa Agropecuária de Minas Gerais, Instituto Técnico de Agropecuária e Cooperativismo, Pitangui, MG
  • Pedro Veiga Rodrigues Paulino Universidade Federal de Viçosa, Departamento de Zootecnia, Viçosa, MG

DOI:

https://doi.org/10.11606/issn.1678-4456.v49i6p465-470

Keywords:

Dairy cows, Hormone, Milk quality, Milk retention

Abstract

Milk yield and milk quality were evaluated in ½ holstein/zebu cows, with or without the calf presence or oxytocin injection. It was used eight ½ holstein/zebu cows, multiparous, distributed in two Latin squares (4x4) in factorial scheme (2x2), with or without calf presence, and whith or without oxytocin injection. The milk was analyzed for somatic cells count (SCC), total bacterial count (TBC/mL), lactose, total fat, protein, total solids, and no fat dry matter concentration. The animals milked with calves and with ocytocin injection showed a higher milk production. There was no interaction between the effects, and any one of the methods may used for stimulation of aveolar contraction. The calf presence and oxytocin injection during milking results in higher milk production, but no changes in milk quality and composition of ½ holstein/zebu cows.

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Published

2012-12-11

How to Cite

Araújo, W. A. G. de, Carvalho, C. G. V., Marcondes, M. I., Sacramento, A. J. R. do, & Paulino, P. V. R. (2012). Exogenous ocitocin and calf presence on performance and milk quality of crossbred cows. Brazilian Journal of Veterinary Research and Animal Science, 49(6), 465-470. https://doi.org/10.11606/issn.1678-4456.v49i6p465-470

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