In vitro estimation of ruminal protein degradability of forages

Authors

I.E.O. Abdelgadir
R.C. Cochran
E.S. Vanzant
Evan C. Titgemeyer

Keywords

Cattlemen's Day, 1996; Kansas Agricultural Experiment Station contribution; no. 96-334-S; Report of progress (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service); 756; Beef; Protein degradability; Cellulase; Driselase; Forage

Abstract

Ruminal degradation of alfalfa and prairie hay protein was estimated using a proteolytic enzyme from Streptomyces griseus with or without pretreatment with cellulase or a broad spectrum carbohydrase (driselase). Estimates of the undegradable intake protein (UIP) as a percentage of total protein derived from the protease alone were higher than that measured in the animal (i.e., in vivo). Pretreatment of hay samples with cellulase (48 h incubation) or driselase improved the accuracy of UIP predictions compared with those determined using the protease alone.

Recommended Citation

Abdelgadir, I.E.O.; Cochran, R.C.; Vanzant, E.S.; and Titgemeyer, Evan C. (1996) "In vitro estimation of ruminal protein degradability of forages," Kansas Agricultural Experiment Station Research Reports: Vol. 0: Iss. 1. https://doi.org/10.4148/2378-5977.1974