Dry matter in take and milk yield by cows fed by IAC86-2480 sugar-cane

Authors

  • Maria Lúcia Pereira Lima Secretaria de Agricultura e Abastecimento do Estado de São Paulo, Agência Paulista de Tecnologia dos Agronegócios, Polo Regional de Desenvolvimento Tecnológico dos Agronegócios do Centro Leste, Ribeirão Preto, SP
  • Daniel Nunes da Silva Secretaria de Agricultura e Abastecimento do Estado de São Paulo, Agência Paulista de Tecnologia dos Agronegócios de Cana, Instituto Agronômico de Campinas, Campinas, SP
  • José Ramos Nogueira Secretaria de Agricultura e Abastecimento do Estado de São Paulo, Agência Paulista de Tecnologia dos Agronegócios, Polo Regional de Desenvolvimento Tecnológico dos Agronegócios do Centro Leste, Ribeirão Preto, SP
  • Marcos Guimarães de Andrade Landell Secretaria de Agricultura e Abastecimento do Estado de São Paulo, Agência Paulista de Tecnologia dos Agronegócios de Cana, Instituto Agronômico de Campinas, Campinas, SP
  • Rosana Aparecida Possenti 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 Forragicultura e Pastagens, Nova Odessa, SP
  • Cláudia Cristina Paro de Paz Secretaria de Agricultura e Abastecimento do Estado de São Paulo, Agência Paulista de Tecnologia dos Agronegócios, Polo Regional de Desenvolvimento Tecnológico dos Agronegócios do Centro Leste, Ribeirão Preto, SP

Keywords:

crossbred cows, milk composition, milk urea

Abstract

The objective was to evaluate milk yield and dry matter intake (DM) by crossbred cows fed with sugar cane variety IAC 86-2480 as exclusive roughage source and concentrate levels of 8; 4 or 2kg per cow, daily. Twenty one crossbred cows, in two lactation phases were individually fed. There were two adaptation periods, one of 14 days when cows were fed with sugar cane added of 0.5% of NPN and 8kg of concentrate and a second period of 14 days when cows were allotted to three dietary treatments with 8; 4 and 2kg of concentrate. The composition of concentrate were 19.6% of soybean meal, 29.4 of whole soybean, 49% of corn and 2% of mineral misture. The experimental period was 21 days. There was difference (P<0.01) between treatments for DM intake and milk yield. The results were 18.83; 16.11 and 13.72kg of milk/cow/day; 18.31; 14.66 and 11.55kg DM/cow/day and intake of 3.37; 2.89 and 2.32% of BW for cows when fed with 8; 4 and 2kg of concentrate, respectively. No difference was observed on milk composition, except for milk protein and milk urea contents. The results were 3.01; 2.82 and 2.73% protein and, 9.80; 7.40 and 6.39mg dL-1 for milk urea for 8; 4 and 2kg of concentrate treatments, respectively. The level of concentrate feeding affected milk yield and milk composition of cows fed with sugar cane as exclusive roughage source.

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Published

2007-03-22

Issue

Section

ANIMAL NUTRITION

How to Cite

Dry matter in take and milk yield by cows fed by IAC86-2480 sugar-cane. (2007). Bulletin of Animal Husbandry, 64(3), 179-184. http://bia.iz.sp.gov.br/index.php/bia/article/view/1232

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