A PRELIMINARY STUDY ON SOME LESS-USED FEEDS FOR PREDICTING THEIR RUMEN DEGRADABILITY BY A LABORATORY TECHNIQUE

Ana Elena Cişmileanu, C. Dragomir, Smaranda Toma

Abstract
   A laboratory technique (in vitro), based on protease of Steptomyces griseus, was preliminary investigated to determine if it could accurately predict the rumen degradation of feed intake protein for some plants by-products. The evaluated feeds were some less-used ones but they can be used as sources for ruminants feeding: grape marc (7 types), camelina meal (3 types), pumpkin meal, poppy meal, wheat germs meal, linseed meal. Results from laboratory technique were correlated and linearly regressed with the in sacco nylon bag method results.

Key words: rumen degradability, protease Streptomyces griseus