Quality of the milk produced by holsten cows maintained on coast-cross pasture supplemented with concentrate

Authors

  • Duarte Vilela Empresa Brasileira de Pesquisa Agropecuária, Centro Nacional de Pesquisa de Gado de Leite, Juiz de Fora, MG
  • Josiane Aparecida de Lima Secretaria de Agricultura e Abastecimento do Estado de São Paulo, Agência Paulista de Tecnologia dos Agronegócios, Instituto de Zootecnia, Centro de Pesquisa e Desenvolvimento em Nutrição Animal e Pastagem, Nova Odessa, SP
  • João Cesar de Resende Empresa Brasileira de Pesquisa Agropecuária, Centro Nacional de Pesquisa de Gado de Leite, Juiz de Fora, MG
  • Rui da Silva Verneque Empresa Brasileira de Pesquisa Agropecuária, Centro Nacional de Pesquisa de Gado de Leite, Juiz de Fora, MG

Keywords:

Somatic cells, Cynodon, rotated stocking, urea

Abstract

The objective was to evaluate milk quality produced by Holstein cows on coastcross (Cynodon dactylon (L.) Pears) pasture fertilized, strategically irrigated and supplemented daily with either 3 or 6 kg of concentrate cow-1 (19.5% CP). The data were collected for three years (October/2000 to October/2003), involving 108 lactations. The randomized block design presented two replicates of area by treatment, nine animals per area and eighteen cows per treatment with a fixed stocking rate of five cows ha-1. The grazing system adopted was rotated stocking with one day€™s enclosures occupation and 25 and 35 days rest, in the raining and dry season, respectively. The pasture was irrigated in the months of poorest rainfall and fertilized with NPK (20-05-20), broadcast in six yearly applications. The milk yields daily average per cow (corrected to 3.5% of fat) were of 16.09 and 19.50 kg, for the concentrate levels of 3 and 6 kg cow day-1, respectively. The milk crude protein values varied significantly in function of the two concentrate levels showing percentages of 2.97% and 3.17%, respectively. The fat, lactose, urea, total solids and somatic cells levels of the milk were not influenced by the concentrate(3 and 6 kg of concentrate cow day-1) indicating that milk quality lies within the normal standards demanded by legislation for use in the industry or for table consumption.

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Published

2013-11-27

Issue

Section

ANIMAL NUTRITION

How to Cite

Quality of the milk produced by holsten cows maintained on coast-cross pasture supplemented with concentrate. (2013). Bulletin of Animal Husbandry, 62(3), 221-228. http://bia.iz.sp.gov.br/index.php/bia/article/view/1296

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