Effects of quercetin on growth performance,serum immune indexes and intestinal digestive enzyme activities of growing pigs
The aim of this study is to investigate the effects of quercetin on the growth performance,nutrient utilization efficiency,and harmful gas emissions of growing pigs. 400 healthy hybrid pigs(with an average weight of 20.13±0.47 kg)were randomly divided into 4 groups,each with 10 replicates,with 10 pigs per replicate. Add 0,50,150,and 450 mg/kg of quercetin to the basic diet of each stage as the experimental feed,and the experiment lasted for 102 days. The results showed that in the first stage,compared with the control group,the QU groups with 150 and 450 mg/kg significantly increased the final weight of growing pigs by 5.87％ and 5.84％(P<0.05),and the feed to weight ratio significantly decreased by 7.76％ and 8.43％(P<0.05);In the second stage,compared with the control group,the final weight of growing pigs in the 150 and 450 mg/kg QU groups significantly increased by 6.16％ and 6.57％(P<0.05);In the third stage,compared with the control group,the final weight of growing pigs in the 150 and 450 mg/kg QU groups significantly increased by 4.34％ and 5.42％(P<0.05),and the feed to weight ratio significantly decreased by 6.19％ and 6.78％(P<0.05);At all stages,compared with the control group,the ADG of growing pigs in the 150 and 450 mg/kg QU groups significantly increased by 5.22％ and 6.62％(P<0.05),while the feed to weight ratio significantly decreased by 4.33％ and 5.75％(P<0.05). Serum IL-1 β and IL-10 contents from growing pigs in the 150 and 450 mg/kg QU groups were significantly decreased(P<0.05);The serum IL-6 content of growing pigs in the 450 mg/kg QU group was significantly reduced(P<0.05);the serum TNF-α content from growing pigs in the 150-450 mg/kgQU groupswere significantly decreased(P<0.05);The serum C3 and C4 levels of growing pigs in the 150 and 450 mg/kg QU groups were significantly increased(P<0.05). The activities of trypsin,lipase and α-amylase in duodenum of growing pigs in 150 and 450 mg/kg QU groups were significantly increased(P<0.05);The jejunal trypsin activity of growing pigs in 150 and 450 mg/kg QU groups was significantly increased(P<0.05);The ileal trypsin and lipase activities of growing pigs in 150 mg/kg QU group were significantly increased(P<0.05). In conclusion,according to various indexes,150 mg/kg is the optimal QU addition amount for growing pigs.
万方数据
维普
