Efeitos de fontes e formas de processamento do amido na utilização de nutrientes e parâmetros ruminais de vacas em lactação
Carregando...
Data
2008
Título da Revista
ISSN da Revista
Título de Volume
Editor
Resumo
Five multiparous lactating Holsteins cows, cannulated in the rumen and proximal duodenum, were used
in a 5 x 5 latin square. Cows were fed a 40:60 forage: concentrate diet (40% fresh sugar cane and 60%
concentrate). Diets were formulated to have 30% of starch and treatments were starch sources and ration
processing forms: cracked corn, finely ground corn, flaked corn at 310g/l, flaked corn at 360g/l, or
cassava scrapings. No difference (P>0.05) was observed among treatments for dry matter intake. Starch
ruminal digestibility was higher for cassava scrapings treatment. NDF and ADF digestibility were
similar among treatments. Average values of ruminal pH were above 6, except at 2 and 4h after feeding
the cassava diet. There was no effect of treatment on concentrations of total volatile fatty acids. The
flocculation process increased corn starch digestibility. Ruminal degradability of the cassava scrapings
starch was higher than corn, without effect of processing form.
Descrição
Palavras-chave
Vaca, Ácido graxo volátil, Degradabilidade in situ, Raspa de mandioca, Milho floculado, Processamento de grãos, Cow, Volatile fatty acid, In situ degradability, Flaked corn, Grain processing, Cassava scrapings
Citação
SIMAS, J. M. C.; PIRES, A.V.; SUSIN, I.; SANTOS, F. A. P.; MENDES, C. Q.; OLIVEIRA JR., R. C.; FERNANDES, J. J. R. Efeitos de fontes e formas de processamento do amido na utilização de nutrientes e parâmetros ruminais de vacas em lactação. Arquivo Brasileiro de Medicina Veterinária e Zootecnia, Belo Horizonte, v. 60, n. 5, p. 1128-1134, 2008.