Effect of High Proportion Rumen Bypass Fat Diet on Feeding Behavior of Growing Mutton Sheep
The main purpose of this experiment was to explore the effect of high proportion rumen bypass fat diet on feed intake and feeding behavior of Hulun Buir sheep during growth.Twelve Hulun Buir sheep with an average weight of(20±1.9)kg were randomly assigned to the control group(CON,n=6)and the high fat group(23.65％high rumen bypass fat diet,HF,n=6).And continuously record the behavioral activities of each Hulun Buir sheep during the experiments using a camera.The behaviors of the experimental sheep on the 83 d and 84d were continuously observed and recorded,including feeding,ruminating,drinking,standing,and lying.The time spent on each activity over a 24 h period had been recorded.Based on the feed intake,the rate of dry matter,fat,and crude protein intake were calculated.The results showed that dietary supplementation with high proportion of rumen bypass fat significantly decreased the concentrate feed intake,dry matter intake,crude protein intake and feeding speed(P＜0.05),the feed intake times,daily rumination time,rumination time per kilogram of diet and drinking time(P＜0.05)of growing Hulun Buir sheep(P＜0.05),but increased the intake and feed speed of crude fat(P＜0.01).The results suggested that dietary supplementation of high proportion of rumen bypass fat may reduce concentrate intake by affecting the feeding frequency of growing sheep,accompanied by a decrease in drinking behavior.
ethology of livestockhigh rumen bypass fat dietfeed intakeHulun Buir sheep
万方数据
维普
