Department of Animal Science, Faculty of Agriculture Ege University Bornova-Izmir, Turkey.
To predict the metabolizable energy (ME) values of roughages based on in vitro 24h gas production (GP) with cell wall contents and/or chemical components, data of Sayan et al. (2004) for 40 roughages were used in the study. Based on R2 (determination coefficient) values, best predictions were made when GP and ADF values were used with crude protein, ash and ether extract separately or together.
Roughages, gas production, chemical component, determination coefficient
