Effects Of Fungus Bran Feed On Production Performance, Digestion And Metabolism In Beef Cattles

The objective of this study was to evaluate the effects of fungus bran pellet feed on production performance, rumen fermentation, digestion and metabolism, serum biochemical indexes in beef cattles. Twenty Simmental cattles of 36 months of age with similar weight were randomly divided into two groups. Cattles in control group were fed corn straw silage and concentrated feeds, cattles in treatments were fed fungus bran feed for 60 days. All cattles were weighed at the 30 d and 60 d, respectively. And evaluate the effects of fungus bran pellet feed on the performance of beef cattles. Four cattles of 2.5 years of age with similar weight and permanent fistula were treated for a 30d digestion and metabolism experiment. Cattles were fed corn straw silage+concentrated feeds and fungus bran pellet feed. Adopted 2×2 Latin square design. The results show that:①The average daily gain of control group was significantly higher than that of the treatment group at the 1～30d (P<0.05), and there was no significant difference between control group and the treatment group at the 30～60d (P>0.05).②pH, TVFA, butyrate, isobutyrate and ammonia nitrogen concentrations in treatment group were significantly lower than those in the control group (P<0.05).③The soluble fraction (a) of DM, OM and CP degradation rates of fungus bran feed and raw fungus bran in treatment group were significantly lower than those in the control group (P<0.05), the potentially degradable fraction (b) of NDF and ADF were significantly lower than those in the control group (P<0.05), the degradation rates (c) was not significant difference. The effective degradability (P) of DM and NDF degradation rates of raw fungus bran in control group were significantly higher than those in the treatment group (P<0.05).④The activities of cellulose, protease and amylase had varying degrees of reductions, especially protease.⑤The differences of urine purine derivatives, absorb purines and microbial protein synthesies were not significant between the treatment group and the control group (P>0.05).⑥The apparent digestibilities of dry matter, organic matter, crude protein and nitrogen free extract of the treatment group were significantly lower than that of the control group (P<0.05).⑦SUN and ALP concentrations of control group were significantly lower than that of the treatment group (P<0.05), and TP was higher than the treatment group(P<0.05). The results indicated that the effects of fungus bran on the performance of beef catties were similar to that of corn straw silage, but the influences of rumen fermentation and serum biochemical indexes were lower than that of corn straw silage.