consumo e digestibilidade de nutrientes de dietas com silagens de grãos úmidos de milho ou sorgo, em ovinos intake and digestibility of nutrients in sheep diets based on corn and sorghum grain high moisture silages

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ID: 202660
2009
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Abstract
Avaliaram-se o consumo, a digestibilidade e o teor de nutrientes digestíveis totais (NDT) de dietas contendo silagens de grãos úmidos de milho e de sorgo, com ou sem inoculante microbiano, em ovinos. O volumoso utilizado foi feno de capim-braquiária (Brachiaria brizantha cv. Marandu). Doze animais foram distribuídos em quatro tratamentos: (1) feno+silagem de grão úmido de milho, (2) feno+silagem de grão úmido de sorgo; (3) feno+silagem de grão úmido de milho com inoculante microbiano e (4) feno+silagem de grão úmido de sorgo com inoculante microbiano. Não houve diferença entre tratamentos quanto aos consumos de matéria seca, de matéria orgânica, de proteína bruta, de fibra em detergente neutro, de carboidratos totais e de carboidratos não estruturais. O consumo de extrato etéreo diferiu em função do tipo de grão. Não houve diferença entre tratamentos quanto à digestibilidade dos nutrientes. Não houve efeito do grão e da inoculação para o NDT estimado das silagens de grãos úmidos de milho e de sorgo, com médias de 77,6% e 79,5%, respectivamente. O uso de inoculante microbiano em silagens de grãos úmidos não se fez necessário. O grão de milho úmido pode ser substituído pelo de sorgo sem prejuízos ao aproveitamento de nutrientes em ovinos adultos.
The intake, the digestibility of nutrients, and the total digestible nutrients (TDN) content in sheep diets based on corn and sorghum grains high moisture silages with or without microbial inoculant, were evaluated. The used roughage was Brachiaria hay (Brachiaria brizantha cv. Marandu). Twelve animals were distribuited to treatments: (1) hay+high moisture corn grain silage, (2) hay+high moisture sorghum grain silage; (3) hay+high moisture corn grain silage with microbial inoculant, and (4) hay+high moisture sorghum grain silage with microbial inoculant. No differences among treatments in relation to the intake of dry matter, organic matter, crude protein, neutral detergent fiber, and total and non-structural carbohydrates were observed. The ether extract intake differed according to the grains. The silages did not differ in relation to the estimated digestibilities for dry matter, organic matter, crude protein, neutral detergent fiber, ether extract, and total and non-structural carbohydrates. The TDN did not differ according to the grains and inoculant, with averages of 77.6 and 79.5%, for corn and sorghum grains high moisture silages, respectively. It was demonstrated that the use of microbial inoculant, in high moisture grain silages was not necessary. High moisture corn grain silage can be substituted by high moisture sorghum grain silage without effects on the use of nutrients by sheep.
Reference Key
tavo2009arquivoconsumo Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;C.C.B.F. Ítavo;M.G. Morais;L.C.V. Ítavo;A.R.D.L. Souza;F.C.A. Davy;F.A. Biberg;W.B. Alves;M.V. Santos
Journal Environmental research
Year 2009
DOI
10.1590/S0102-09352009000200024
URL
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352009000200024
Keywords
corn

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