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Coffee hull in the diet of dairy heifers: nitrogen balance and microbial protein synthesis R. Bras. Zootec.
Souza,Alexandre Lima de; Garcia,Rasmo; Cabral,Luciano da Silva; Pereira,Mara Lúcia Albuquerque; Valadares,Rilene Ferreira Diniz.
It was evaluated nitrogen compounds and microbial protein synthesis in heifers fed diets containing coffee hulls (0.0; 8.75; 17.25; and 26.25% of dry matter) replacing ground corn concentrate at the following levels of coffee hulls in the total diet dry matter: 0.0, 3.5, 7.0 or 10.5%. It was used 24 crossbreed heifers (7/8, 15/16 and 31/32 Holstein-Zebu), which were distributed in a random block design made up accordingly to the weight of the animals. Spot samples of urine were colleted aproximatelly four hours after morning feeding and were used to estimate microbial protein synthesis by using urine purine derivatives. It was not observed effect of coffee hull levels in the diet on total nitrogen intake (160 g/day) and nitrogen excretion in the urine...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Agroindustrial residue; Creatinine; N-urea; Purine derivatives; Spot urine.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982010000500027
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