report

In vitro estimation of ruminal protein degradability of forages

Authors

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

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.

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

How to Cite: Abdelgadir, I. , Cochran, R. , Vanzant, E. & Titgemeyer, E. C. (1996) “In vitro estimation of ruminal protein degradability of forages”, Kansas Agricultural Experiment Station Research Reports. 1(1). doi: https://doi.org/10.4148/2378-5977.1974