EFFECT OF SODIUM HYDROXIDE OR UREA TREATMENT ON CHEMICAL COMPOSITION AND LABORATORY DIGESTION FACTORS FOR BARLEY STRAW AND CORN COBS

Abstract

These experiments were conducted to study effect of chemical treatment with sodium hydroxide or urea on chemical composition and in vitro digestibility of different roughages such as barley straw and yellow corn cobs. The chemical coefficients were used on the first lap periods of 30 days and 45 days. For determining of the effect of roughages type, the authors observed a high moral superiority (p <0.01) for barley processing in dry matter digesters, organic matter digestion, raw fiber ratio and nitrogen-free extract on feedstocks (P <0.01) for the treatment of sodium hydroxide in the dry digestion factor , organic matter digestion factor, raw fiber ratio, and nitrogen-free extract. When determining the effect of the length factor of the incubation period, the second period (45 days) was significantly higher (p <0.01) in the dry matter digestion coefficient, organic matter digestion factor, raw fiber ratio, crude protein ratio, and nitrogen-free extract compared with the first period. For explaining the effect of the overlap between the type of feed material and the type of chemical treatment, there was significant differences (P <0.01) for barley processing in dry matter digestion, organic matter digestion, crude fiber ratio, and nitrogen-free extract. For determining the effect of overlap between feed type and incubation period type, noted a digest organic matter and nitrogen-free extract and protein on all other transactions.