摘要
为了研究SQ对1~21日龄白羽肉鸡生长性能、抗氧化能力和免疫功能的影响,选取体重为(38.38±0.25)g的1日龄雄性AA+白羽肉鸡360只,将雏鸡随机分为3组,每组6个重复,每个重复20只,分别饲喂基础日粮,基础日粮+175 mg·kg^(-1)角鲨烯(squalene,SQ)和基础日粮+350 mg·kg^(-1) SQ,试验期为21 d。结果表明:(1)饲粮中添加175和350 mg·kg^(-1) SQ均能显著提高肉鸡平均日增重,并显著降低料重比(P<0.05),同时提高肉鸡血清中超氧化物歧化酶(superoxide dismutase,SOD)、谷胱甘肽过氧化物酶(glutathione peroxidase,GSH-Px)、过氧化氢酶(catalase,CAT)活性及总抗氧化力(total antioxidant capacity,T-AOC)(P<0.05),显著降低血清丙二醛(malonyldialdehyde,MDA)含量(P<0.05),且350mg·kg^(-1)SQ添加量在改善肉鸡血清过氧化氢酶活性和总抗氧化力方面,效果显著优于175 mg·kg^(-1)(P<0.05)。(2)饲粮中添加175和350 mg·kg^(-1) SQ均能显著提高肉鸡血清中高密度脂蛋白、补体C3和C4水平(P<0.05),显著降低血清中低密度脂蛋白水平(P<0.05),且350 mg·kg^(-1) SQ添加量在降低血清低密度脂蛋白和提高补体C3和C4水平方面效果显著优于175mg·kg^(-1)(P<0.05)。(3)饲粮中添加175和350mg·kg^(-1)SQ均能显著提高肉鸡免疫器官指数(P<0.05)。综上所述,饲粮中添加SQ能有效改善1~21日龄白羽肉鸡生长性能、抗氧化能力和免疫功能,其中350 mg·kg^(-1) SQ在改善肉鸡血清过氧化氢酶、总抗氧化力、补体C3和C4方面更具优势。
To investigate the effects of dietary supplementation SQ(squalene) on the growth performance,antioxidant capacity and immunity function of broilers at age of 1-21 days,360 one-day-old male AA+ boilers with body weight(38.38±0.25) g were randomly divided into 3 groups by single-factor experiment,with 6 replicates per group and 20 boilers per replicate.Broilers in CK group were fed with the basal diet,and experimental treatment groups were fed with basal diet with 175 and 350 mg·kg^(-1) SQ,respectively.The experiment lasted for 21 days.The results indicated that:(1) Dietary supplementation of 175 and 350 mg·kg^(-1) SQ significantly increased the average ADG(average daily gain) and significantly reduced the F/G(P < 0.05).Dietary supplementation of 175 and 350 mg·kg^(-1) SQ significantly increased serum SOD,GSH-Px,CAT and T-AOC activities in broilers(P <0.05),significantly reduced serum MDA content(P<0.05),and compared with 175 mg·kg^(-1),dietary supplementation of 350 mg·kg^(-1) SQ significantly increased serum CAT and T-AOC activities in broilers.(2) Dietary supplementation of 175 and 350 mg·kg^(-1) SQ significantly increased the serum HDL level,complement C3 and C4 levels in broilers(P < 0.05),and significantly reduced the serum LDL level in broilers(P < 0.05).Compared with 175mg·kg^(-1),dietary supplementation of 350 mg·kg^(-1) SQ significantly increased serum complement C3 and C4 levels,and serum LDL was significantly reduced(P<0.05).(3) Dietary supplementation of 175 and 350 mg·kg^(-1) SQ significantly improved the immune organ index of broilers(P<0.05).In conclusion,dietary SQ effectively improved the growth performance,antioxidant capacity and immune function of 1-21 days old broilers,and 350 mg·kg^(-1) SQ showed better function in improving serum CAT,T-AOC,complement C3 and C4 in broilers.
作者
高阳
张国慧
周应卿
刘世琴
周鑫彤
赵博絮
张丹丹
李常红
GAO Yang;ZHANG Guohui;ZHOU Yingqing;LIU Shiqin;ZHOU Xintong;ZHAO Boxu;ZHANG Dandan;LI Changhong(College of Life Science,Baicheng Normal University,Baicheng 137000)
出处
《安徽农业大学学报》
CAS
CSCD
2022年第6期935-938,共4页
Journal of Anhui Agricultural University
基金
吉林省科技厅项目(JJKH20190017KJ)
白城师范学院博士科研启动资金(012006)
吉林省大学生生命科学竞赛项目(105006)
吉林省大学生创新基金(X20220145)共同资助。
关键词
角鲨烯
肉鸡
生长性能
抗氧化能力
免疫功能
squalene
boiler
growth performance
antioxidant capacity
immunity function
