Effects of Mulberry Leaf Powder on Growth Performance, Meat Quality and Serum Biochemical Indexes in Finishing Pigs
This study was aimed to investigate the effects of mulberry leaf powder on growth performance, meat quality and serum biochemical indexes in finishing pigs.One hundred and sixty‘Duroc×Yorkshire×Land-race’ health finishing pigs with initial weight of (87.10±5.33) kg were randomly divided into four groups with four replicates in each group and ten pigs in each replicate.Pigs in the four groups were fed with a basal diet ( control group, group Ⅰ) , the basal diet containing 5%mulberry leaf powder ( group Ⅱ) , the basal diet containing 10%mulberry leaf powder ( group Ⅲ) , and the basal diet containing 15%mulberry leaf powder ( group Ⅳ) , respectively.The experiment lasted for 50 days.The results showed as follows: compared with the control group, 1) the average daily gain of finishing pigs fed diet containing 5%and 10%mulberry leaf powder was not significantly different ( P>0.05) , the average daily gain was significantly decreased and the ra-tio of feed to gain was significantly increased in pigs fed diet containing 15%mulberry leaf powder ( P<0.05) . 2) Shear force and pH of muscle at 45 min and 24 h post-slaughter were not significantly different in finishing pigs fed diet containing 5%and 10%mulberry leaf powder ( P>0.05) , but marbling score was increased with no significantly different ( P>0.05) .Backfat thickness and cholesterol content in muscle were significantly de-creased in pigs fed diet containing 15%mulberry leaf powder ( P<0.05) .3) As diet mulberry leaf powder lev-el was 5%, 10%and 15%, the SOD activity was significantly increased ( P<0.05) and malonaldehyde content was significantly decreased ( P>0.05) , and the antioxidant performance of muscle was improved.4) Urea ni-trogen content in serum was significantly increased in pigs fed diets containing 5%, 10%and 15%mulberry leaf powder ( P<0.05) , lipase activity was decreased with no significantly different ( P>0.05) , and triglycer-ide content was significantly decreased in pigs fed diet containing 15%mulberry leaf powder ( P<0.05).In conclusion, diet containing 10%mulberry leaf powder has less effect on the growth rate of finishing pigs, while can improve meat quality.
mulberry leaf powderfinishing piggrowth performancemeat qualityserum biochemical index
国家科技期刊平台
NSTL
万方数据
维普
