Studies on Different Processing Rice Straw Nutrients and Rumen Degradability

This trial was conducted to study the nutrients and rumen degradation characteristics of different processing rice straw:dry straw,rice straw silage,ammonia treated rice straw,alkali treated rice straw.Nylon-bag technique was used to evaluate effective degradabilities of organic matter(OM),crude protein(CP),neutral detergent fiber(NDF),and non-fiber carbohydrates(NFC),and ratio between effectively degraded nitrogen to OM and CHO of these roughages.The results showed as follows:The ammoniated effectively increase crude protein content of rice straw;The silage,ammoniated and alkalization reduce NDF content,and significantly increase NFC content of rice straw(P0.05).Effective degradabilities of OM sequence was alkali treated rice straw,ammonia treated rice straw,rice straw silage and dry straw;CP degradation rate and effective degradability of ammonia treated rice straw were the highest among three types of processing rice straw,and followed by rice straw silage;Ammonia treated rice straw and alkali treated rice straw can improve NDF effective degradability(P 0.05).Ammonia treated rice straw and rice straw silage can improve EDN/EDOMand EDN/EDCHO。