壳聚糖对肉仔鸡生长性能及血清生化指标的影响

试验选用1日龄AA雄性肉仔鸡270只,随机分到5个日粮处理组,进行为期42d的饲养试验。5种日粮是在基础日粮中加入0、50、100、150mg/kg的壳聚糖和50mg/kg的金霉素。结果表明:日粮中添加100mg/kg壳聚糖在提高日增重趋势的同时,提高了饲料转化效率,效果优于金霉素。在血清生化指标方面,100mg/kg壳聚糖组相比对照组降低了血清中TC、TG含量(P<0.05),提高了TPI、GF-1和GH含量(P<0.05),而对葡萄糖和尿酸含量无影响(P>0.05)。初步确定壳聚糖在肉鸡日粮中的适宜添加量为100mg/kg。壳聚糖的促生长作用可能与提高了血清中GH和IGF-1的分泌有关。

Effects of Chitosan on Growth Performance and Serum Parameters in Broilers

An experiment was conducted to study the effects of different doses of chitosan on growth and serum parameters in male broilers.A total of 270,1 d old Arbor Acres male broilers were randomly allotted to five dietary treatments(9 birds per pen with 6 pens per treatment).The experiment period were 42 d.The control birds were fed the basal diet alone,the second treatment were fed basal diet added 50 mg/kg chlortetracycline(CTC),the other treatments fed the basal diet supplemented with 50,100,150 mg/kg chitosan(CHS),respectively.The results showed that,the treatment which had maximal ADG and minimum FCR was 100 mg/kg CHS group,and better than CTC groups.In aspect of serum parameters,the results showed that 100 mg/kg CHS was significantly decreased(P < 0.05) the concentration of serum TC and TG,and enhanced(P < 0.05) levels of serum TP and the secretion of serum GH and IGF-1,while had no influence(P > 0.05) on serum glucose and UA.Thus we could elementary make sure that the optimal dose of CHS adding to broiler diets was 100 mg/kg.Chitosan may exert its beneficial effect through enhancing the secretion serum levels of GH and IGF-1.