Prediction of dry matter intake based on ruminal degradation from milking cows grazing coast-cross grass.

Dry matter intake (DMI) of coast-cross grazing by crossbred Holstein-Zebu and Zebu lactating cows was calculated using in vitro dry matter digestibility from extrusa (four esophageal fistulated cows) and fecal output estimate with mordent chromium. Pasture was rotationally grazed with three days grazing period and 27 days resting period, adopting a stocking rate of 1.6 and 3.2 cows/ha, during the dry and rainy season respectively. Voluntary DMI was estimated from degradation characteristics using different equations. Predicted coast-cross DMI varied with models. The prediction of tropical forages dry matter intake from equations based in ruminal degradation parameters needs further investigation before being employed in practice.

Bibliographic Details

Main Authors:	BERCHIELLI, T. T., SOARES, J. P. G., AROEIRA, L. J. M., FURLAN, C. L., SALMAN, A. K. D., SILVEIRA, R. N. da, MALHEIROS, E. B.
Other Authors:	UNIVERSIDADE ESTADUAL PAULISTA; UNIVERSIDADE ESTADUAL PAULISTA; LUIZ JANUARIO MAGALHAES AROEIRA, CNPGL; UNIVERSIDADE ESTADUAL PAULISTA; UNIVERSIDADE ESTADUAL PAULISTA; UNIVERSIDADE ESTADUAL PAULISTA; UNIVERSIDADE ESTADUAL PAULISTA.
Format:	Artigo em anais e proceedings biblioteca
Language:	eng
Published:	2024-11-06
Subjects:	Pastagem, Vaca Leiteira, Grazing, Dry matter intake, Holstein, Dairy cows, Pastures,
Online Access:	http://www.alice.cnptia.embrapa.br/alice/handle/doc/1168851
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