Cellulase added to wheat straw feed for the growth performance and nutrient digestion of meat sheepand economic benefits
The purpose of this study was to explore the effects of cellulase addition on the growth performance,nutrient digestion and economic benefits of wheat straw diet. In this experiment,48 sheep weighing about(21±1)kg were randomly divided into 4 groups,the control group was fed basal diet(the ratio of fine to crude was 4:6),and the remaining 3 groups were fed 0.1％,0.3％ and 0.5％ cellulase treated wheat straw to replace the wheat straw in the basal diet,3 replicates in each group,4 in each replicate,14 days of pre-test,and 60 days of formal test. The results showed that,the addition of 0.1％,0.3％ and 0.5％ cellulase in wheat straw diet could significantly increase the average daily weight gain(ADG)and F/G(P<0.05)of meat sheep,and the average daily feed intake(ADFI) of meat sheep was significantly increased after adding 0.1％ cellulase(P<0.05). The apparent digestibility of dry matter(DM),neutral detergent fibers(NDF)and acidic detergent fibers(ADF)in wheat straw diet was significantly increased after 0.1％,0.3％ and 0.5％ cellulase(P<0.05),but there was no significant change in the apparent digestibility of crude protein(CP)and crude fat(EE)(P>0.05). The weight gain income and economic benefits of sheep breeding were significantly increased after the addition of 0.1％,0.3％ and 0.5％ cellulase in wheat straw diet(P<0.05),and the best effect was achieved when the addition rate was 0.3％.
wheat straw feedcellulasegrowth performance of meat sheepnutrient digestioneconomic performance
万方数据
维普
