The effects of polysaccharides from enteromorpha prolifera on growth performance,meat quality,and digestive enzyme activity in growing pigs
This study aims to investigate the effects of polysaccharides from Enteromorpha prolifera on growth performance,meat quality,and intestinal digestive enzyme activity in growing pigs.240 healthy,average weight(23.62±1.37)kg hybrid(Du)×long×The growing pigs were randomly divided into 4 groups,with 6 replicates in each group and 10 pigs per replicate.The experiment lasted for 48 days,and 0,200,400,and 800 mg/kg of Enteromorpha prolifera polysaccharides were added to the basic diet as the experimental diet.The experimental results showed that compared with the control group,the FBW of growing pigs in the feed supplemented with 800 mg/kg Enteromorpha polysaccharides group was significantly increased by 4.76% (P＜0.05);The addition of 800 mg/kg Enteromorpha polysaccharides to the feed significantly increased the ADG of growing pigs by 7.41% (P＜0.05);The addition of 800 mg/kg Enteromorpha polysaccharides to the diet significantly reduced the F/G of growing pigs by 7.77% (P＜0.05).The addition of 800 mg/kg of Enteromorpha prolifera polysaccharides to the diet significantly increased the pH value of the muscle of growing pigs at 24 hours(P＜0.05);The addition of 200～800 mg/kg Enteromorpha polysaccharides to the diet significantly increased the intramuscular fat content of growing pigs(P＜0.05);The addition of 800 mg/kg Enteromorpha polysaccharides to the diet significantly reduced the muscle shear strength of growing pigs(P＜0.05);The addition of 400～800 mg/kg of Enteromorpha prolifera polysaccharides to the diet significantly improved the muscle marbling score of growing pigs(P＜0.05).Compared with the control group,the group supplemented with 800 mg/kg of Enteromorpha prolifera polysaccharides significantly increased the protease activity in the jejunum and stomach of growing pigs(P＜0.05);The lipase activity in the jejunum of growing pigs was significantly increased(P＜0.05)in the group supplemented with 400 and 800 mg/kg of Enteromorpha polysaccharides;The addition of 400 and 800 mg/kg of Enteromorpha prolifera polysaccharides to the diet significantly increased the lipase activity in the ileum of growing pigs(P＜0.05).In summary,the results of this experiment indicate that polysaccharides from Enteromorpha prolifera can enhance the activity of digestive enzymes in the intestines of growing pigs,enhance their growth performance,and improve meat quality.Under the conditions of this experiment,the optimal amount of polysaccharides added from Enteromorpha prolifera is 800 mg/kg.
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