parâmetros de degradabilidade potencial da matéria seca e da proteína bruta das silagens de seis genótipos de sorgo (sorghum bicolor (l.) moench), com e sem tanino no grão, avaliados pela técnica in situ potential degradability parameters of the dry matter and crude protein of six sorghum silage genotypes (sorghum bicolor (l.) moench), with or without tannin on grain, evaluated by in situ technique

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ID: 257651
2003
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Abstract
Para testar o efeito da presença de tanino no grão sobre os parâmetros de degradabilidade potencial da matéria seca e da proteína bruta de seis genótipos de sorgo para silagem, foi conduzido um experimento utilizando a técnica da degradabilidade in situ. Quatro novilhos canulados no rúmen, alimentados individualmente, duas vezes ao dia ad libitum com feno de Tifton 85, foram utilizados para a incubação de silagens de sorgo no estádio de grão leitoso, pertencentes a seis genótipos: BR 303, BR 304, BR 601e AG 2006 (sem tanino no grão); BR 700 e BR 701 (com tanino). Foram incubadas 5 g de amostra nos tempos de incubação: 6, 12, 24, 48, 72 e 96 horas. O tempo zero (t0) foi utilizado para cálculo da fração solúvel. A presença do tanino reduziu a extensão de degradação da matéria seca e da proteína bruta nas silagens de sorgo BR 700 e BR 701. As degradabilidades potenciais destes nutrientes foram influenciada pelo tanino. Não foi observado efeito depressivo do tanino sobre as taxas de degradação para nenhum nutriente, em nenhuma silagem testada.
The aim of this experiment was to evaluate the effect of tannin on grain over potential degradability parameters of the dry matter and crude protein of six sorghum silage genotypes by in situ technique. It was used four crossbred steers, canulated in rumen, fed ad libitum twice at day with a diet comprised by Cynodon dactylon hay. Six sorghum silage genotypes, harvested at milk stage, were incubated in the rumen: BR 303, BR 304, BR 601, and AG 2006 (without tannin on grain); BR 700, and BR 701 (with tannin on grain). Five grams of samples were incubated at times: 6, 12, 24, 48, 72, and 96 hours. The time zero (t0) was used to calculate the soluble fraction. Tannin decrease the extent of degradation of dry matter and crude protein of BR 700 and BR 701 sorghum silages. The potential degradabilities of these nutrients were reduced by tannin presence on grain. There was not effect of tannin on degradation rate of the nutrient compounds in anyone tested sorghum silage.
Reference Key
molina2003revistaparmetros Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Lívio Ribeiro Molina;Norberto Mario Rodriguez;Breno Mourão de Sousa;Lúcio Carlos Gonçalves;Iran Borges
Journal european journal of lipid science and technology
Year 2003
DOI
10.1590/S1516-35982003000100028
URL
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982003000100028
Keywords
rumen cattle sorghum silage bovino tanino

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