[Prediction of the Voluntary Intake of Grass Silages By Growing Sheep]
(1991) Landbouwtijdschrift. Tweetalige Editie — Vol. 44, n° 3, p. 433-445 (1991)
Files
No attached file found for this publication.
Details
- Authors
- Abstract
- A mathematical model (non linear multiple regression) was developed for prediction of the voluntary intake (VI, g DM/kg BW.75/d) of grass silage by growing Texel sheep (32 to 83 kg BW). Four main parameters describing the silage quality and or its physical structure are used in the model: the level ammonia nitrogen (in % of total N) and the pH of the silage, the level of corrected dry-matter of the forage (%) and the mean chop length of partiels (in cm). Relations between VI and each parameter are found to be curvilinear and cover a large range of data (VI between 35 and 73 g DM/kg BW.75/d). The validity of the model was tested on a set of 10 independent grass silages and a significant linear relationship (R2 = 0.902) was obtained between predicted and actual VI values. The main prediction bias was low (-1.7 g DM/kg BW.75/d) and the calculated mean prediction error was of 8%.
- Affiliations
Citations
Bruyer, DC., Jacobs, B., & Vanbelle, M. (1991). [Prediction of the Voluntary Intake of Grass Silages By Growing Sheep]. Landbouwtijdschrift. Tweetalige Editie, 44(3), 433-445. https://hdl.handle.net/2078.5/25663 (Original work published 1991)