The effects of fermented peony seeds on growth performance,nutrient apparent digestibility,and serum biochemical indicators in fattening pigs
(Experimental objective)To explore the effects of fermented peony seeds on the growth performance,nutrient apparent digestibility,and serum biochemical indicators of fattening pigs.320 DLY ternary hybrid castrated male pigs(weight:64.26±1.73 kg)were randomly divided into 4 groups,with 10 replicates in each group and 8 pigs per replicate.The control group received basic feed,experimental group Ⅰ used 6%peony seeds instead of soybean meal,experimental group Ⅱ used 3%fermented peony seeds instead of peony seeds,and experimental groupⅢ used 6%fermented peony seeds instead of peony seeds.The experiment lasted for 35 days.Compared with the control group,the 6%fermented peony seed group showed a significant decrease of 1.77%in final body weight,a significant decrease of 6.38%in average daily weight gain,and a significant increase of 6.38%in feed to weight ratio(P<0.05);Compared with the 6%peony seed group,the 6%fermented peony seed group significantly increased the final body weight of fattening pigs by 2.40%,the average daily weight gain significantly increased by 6.72%,and the feed to weight ratio significantly decreased by 7.38%(P<0.05);The apparent digestibility of DM,EE,and CP in the 6%peony seed group of fattening pigs was significantly reduced(P<0.05);Compared with the 6%peony seed group,the 6%fermented peony seed group significantly increased the apparent digestibility of DM,EE,and CP in fattening pigs(P<0.05).The serum ALT activity of the 6%peony seed group in fattening pigs was significantly higher than that of other groups(P<0.05);The serum triglyceride content in the 6%fermented peony seed group of fattening pigs was significantly lower than that in other groups(P<0.05);There was no significant difference in serum GSH Px activity between the 6%fermented peony seed group and the control group,but it was significantly higher than other treatment groups(P<0.05);The serum MDA content in the peony seed group of fattening pigs was significantly higher than that in other groups(P<0.05).(Experimental conclusion)Fermentation treatment can partially alleviate the negative effects of peony seeds on the growth and development of fattening pigs,and its growth promoting mechanism may be related to the improvement of digestion rate and serum biochemical indicators.