Effects of Morinda officinalis Polysaccharide on Growth Performance,Serum Immune and Antioxidant Indexes and Immune Organs Development of Wenchang Chickens
[Objective]This experiment was conducted to investigate the effects of Morinda officinalis polysaccharides(MOP)on growth performance,serum immune and antioxidant function and immune organs development of Wenchang chickens,in order to provide reference for the application of MOP in healthy breeding of broilers.[Method]Six hundred 6-day-old healthy female Wenchang chickens were selected and randomly divided into 5 groups,with 8 replicates in each group and 15 chickens in each replicate.The chickens in control group was fed with basal diet,and the chickens in the experiment groups were fed with basal diet supplemented with 250,500,1 000 and 2 000 mg/kg MOP,respectively.The experiment lasted for 40 days.Body weights were taken on the 1st and 40th day of the trial to calculate average daily gain(ADG).During the trial period,the leftover feed was recorded in repetition,and average daily feed intake(ADFI)and feed-to-gain ratio(F/G)were calculated.On the 40th day of the trial,one chicken from each replicate was selected for blood sampling and tissue collection.Serum biochemical indicator,antioxidant indicator,immune indicator and immune organ index of Wenchang chickens were determined.[Result]Compared with control group,① Adding different levels of MOP had no significant effects on the final body weight,ADG and ADFI of Wenchang chickens(P＞0.05),but F/G of 250 mg/kg MOP group was significantly increased(P＜0.05),and F/G of other experiment groups did not have significant changes(P＞0.05).②The serum IgG content in 250 mg/kg MOP group and the serum IgM content in 500 mg/kg MOP group were significantly increased(P＜0.05),serum MDA contents in 500 and 1 000 mg/kg MOP groups were significantly reduced(P＜0.05),and serum GSH-Px activity in 2 000 mg/kg MOP group was significantly increased(P＜0.05).③Dietary addition of 500,1 000 and 2 000 mg/kg MOP could significantly increase the bursa of Fabricius index of Wenchang chickens(P＜0.05).[Conclusion]The addition of 250 and 500 mg/kg MOP in this experiment could increase the serum immunoglobulin content of Wenchang chickens,and the addition of 500,1 000 and 2 000 mg/kg MOP could improve the serum antioxidant indicator of Wenchang chickens and promote the growth and development of the bursa of Fabricius.In this experiment,the appropriate amount of MOP addition was 500 mg/kg.
万方数据
维普
