Intake and digestibility of nutrients in sheep diets based on corn and sorghum grain high moisture silages

Itavo, C. C. B. F.; Morais, M. G.; Itavo, L. C. V.; Souza, A. R. D. L.; Davy, F. C. A.; Biberg, F. A.; Alves, W. B.; Santos, M. V.

Arquivo Brasileiro de Medicina Veterinaria e Zootecnia 61(2): 452-459

2009


ISSN/ISBN: 0102-0935
DOI: 10.1590/s0102-09352009000200024
Accession: 066221736

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Abstract
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 nonstructural 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.