The effect of astragalus polysaccharide on the growth performance,serum immune indicators,and economic benefits of meat sheep
To investigate the effects of different levels of Astragalus Polysaccharide(AP)on the growth performance,serum immune indicators,and economic benefits of meat sheep.96 healthy 120 day old Du Han hybrid sheep with similar body weight[(35.74±1.75)kg]were randomly divided into 4 groups.The CON group was fed a basic diet,while the other three groups were fed a basic diet plus experimental diets of 400,800,and 1200 mg/kg AP,respectively.Each group had 3 replicates,with 8 sheep per replicate.The pre-test period was 7 days and the experimental period was 60 days.The results showed that:(1)Compared with the CON group,when the level of Huangqi polysaccharide added was 800 mg/kg,the average daily weight gain significantly increased by 10.95%(P＜0.05),and the feed conversion rate significantly decreased by 9.19%(P＜0.05);When the level of Huangqi polysaccharide added was 1200 mg/kg,the average daily weight gain significantly increased by 9.88%(P＜0.05),and the feed conversion rate significantly decreased by 8.26%(P＜0.05).(2)Compared with the CON group,the addition level of Huangqi polysaccharide at 800 mg/kg significantly increased the level of IL-10(P＜0.05);When the level of Huangqi polysaccharide added was 1200 mg/kg,the levels of IgG and IL-10 were significantly increased(P＜0.05).(3)The economic benefits of the four groups are 52.44 yuan,66.15 yuan,87.60 yuan,and 82.61 yuan,respectively.It can be seen that Astragalus polysaccharides have the effect of improving the growth performance,serum immunity,and feeding economic benefits of meat sheep.Under the conditions of this experiment,the recommended addition amount of Huangqi polysaccharide is 800 mg/kg.
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