Theme 09: Forage Quality
Publication Date
2001
Location
Brazil
Description
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.
Citation
Berchielli, T. T.; Soares, J. P. G.; Aroeira, L. J. M.; Furlan, C. L.; Salman, A. K. D.; da Silveira, R. N.; and Malheiros, E. B., "Prediction of Dry Matter Intake Based on Ruminal Degradation from Milking Cows Grazing Coast-Cross Grass" (2001). IGC Proceedings (1985-2023). 26.
(URL: https://uknowledge.uky.edu/igc/19/9/26)
Included in
Agricultural Science Commons, Agronomy and Crop Sciences Commons, Plant Biology Commons, Plant Pathology Commons, Soil Science Commons, Weed Science Commons
Prediction of Dry Matter Intake Based on Ruminal Degradation from Milking Cows Grazing Coast-Cross Grass
Brazil
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.
