五倍子提取物对肉鸭生长性能、免疫器官指数及血清免疫指标的影响

The effects of gallnut extract on the growth performance,immune organ index,and serum immune indicators of meat ducks

文章旨在研究五倍子提取物对肉鸭生长性能、免疫器官指数及血清免疫指标的影响。试验分别在基础日粮中国添加0、100、200和400 mg/kg。试验将2万只健康的1日龄肉鸭随机分为4组,每组10个重复,每重复500只,分别饲喂各试验日粮,试验为期42 d。试验结果表明,在初重一致的前提下(P>0.05),200 mg/kg五倍子提取物添加剂量组肉鸭终末体重显著提高3.56%(P<0.05),料重比显著降低4.51%(P<0.05);同时,五倍子提取物对肉鸭采食量和日增重均无显著影响(P>0.05)。200和400 mg/kg五倍子提取物组肉鸭的21 d胸腺和法氏囊指数显著高于对照组(P<0.05);200和400 mg/kg组五倍子提取物组肉鸭的42 d的脾脏指数显著高于其他组(P<0.05);此外,添加100~400 mg/kg的五倍子提取物对肉鸭21 d脾脏指数、42 d胸腺和法氏囊指数均无显著影响(P>0.05)。添加100~400 mg/kg五倍子提取物可显著提高21 d肉鸭血清IgM和IgA含量(P<0.05),添加200~400 mg/kg五倍子提取物可显著提高21 d肉鸭的血清IgG含量(P<0.05);添加200~400 mg/kg五倍子提取物可显著提高42 d肉鸭血清IgM含量(P<0.05);添加100~400 mg/kg五倍子提取物显著提高42 d肉鸭血清IgA和补体C3含量(P<0.05)。同时,五倍子提取物对21 d肉鸭血清补体C3和C4、42 d肉鸭血清IgG和补体C4含量均无显著影响。总之,200 mg/kg是五倍子提取物的最适添加量。

The aim of this study is to investigate the effects of gallnut extract(GE)on the growth performance,immune organ index,and serum immune indicators of meat ducks.Add 0,100,200,and 400mg/kg GE as the experimental feed.Select 20000 healthy 1-day-old meat ducks and randomly divide them into 4 groups,with 10 replicates in each group and 500 ducks per replicate.Feed each group with experimental feed for 42 days.The experimental results showed that,under the premise of consistent initial weight(P>0.05),the addition dose of 200 mg/kg GE significantly increased the final weight of meat ducks by 3.56%(P<0.05),and the feed to weight ratio significantly decreased by 4.51%(P<0.05);Meanwhile,GE had no significant effect on feed intake and daily weight gain of meat ducks(P>0.05).The 21 day thymus and bursal index of meat ducks in the 200 and 400 mg/kg GE groups were significantly higher than those in the control group(P<0.05);The spleen index of meat ducks in the 200 and 400 mg/kg GE groups at 42 days was significantly higher than that of other groups(P<0.05);In addition,adding 100-400 mg/kg of GE had no significant effect on the 21 day spleen index,42 day thymus index,and Fahrenheit sac index of meat ducks(P>0.05).The addition of 100-400 mg/kg GE significantly increased the serum IgM and IgA content of 21 day meat ducks(P<0.05),while the addition of 200-400 mg/kg GE significantly increased the serum IgG content of 21 day meat ducks(P<0.05);The addition of 200-400 mg/kg GE significantly increased the serum IgM content of 42 day meat ducks(P<0.05);The addition of 100-400 mg/kg GE significantly increased the serum IgA and complement C3 levels in 42 day meat ducks(P<0.05).At the same time,GE had no significant effect on the levels of complement C3 and C4 in the serum of 21 day meat ducks,and IgG and complement C4 in the serum of 42 day meat ducks.In summary,the optimal dosage of GE is 200 mg/kg.