摘要
本试验旨在探究耐镉乳酸菌对镉暴露仔鸡体重、脏器系数和组织中镉、钙、铁、锌、铜、锰、硒含量影响。选取1日龄如皋黄鸡30只,随机分为3组,每组10个重复,每个重复1只鸡。对照组试验鸡第3~6周灌喂1 mL/(d·只)无菌生理盐水;镉暴露组试验鸡第3~6周灌喂1 mL/(d·只)无菌生理盐水,并在第4~6周饮水中添加5 mg/L镉;镉+耐镉乳酸菌组试验鸡第3~6周灌喂1 mL/(d·只)耐镉乳酸菌液(1×10^(9) CFU/mL),并在第4~6周饮水中添加5 mg/L镉。预试期2周,正试期4周。结果表明:1)各组之间仔鸡体重无显著差异(P>0.05)。2)镉暴露组和镉+耐镉乳酸菌组心脏系数显著低于对照组(P<0.05),且镉暴露组和镉+耐镉乳酸菌组之间心脏系数无显著差异(P>0.05)。3)镉暴露组的各组织中镉含量显均显著高于对照组(P<0.05),且各组织中镉含量的高低依次为肾脏>肝脏>脾脏>肺脏>心脏>胸肌。镉+耐镉乳酸菌组的脾脏中镉含量显著低于镉暴露组(P<0.05)。4)镉+耐镉乳酸菌组肝脏中硒含量显著低于对照组和镉暴露组(P<0.05)。镉+耐镉乳酸菌组和镉暴露组肾脏中硒含量显著低于对照组(P<0.05)。镉暴露组肺脏中钙含量显著高于对照组和镉+耐镉乳酸菌组(P<0.05),镉+耐镉乳酸菌组和镉暴露组肺脏中锌含量显著低于对照组(P<0.05),镉+耐镉乳酸菌组肺脏中铜含量显著低于对照组(P<0.05),镉暴露组肺脏中锰含量显著高于对照组和镉+耐镉乳酸菌组(P<0.05)。镉+耐镉乳酸菌组脾脏中钙和铜含量显著低于对照组和镉暴露组(P<0.05)。镉暴露组心脏中钙含量显著低于对照组(P<0.05),镉+耐镉乳酸菌组和镉暴露组心脏中硒含量显著高于对照组(P<0.05)。由此可见,仔鸡镉暴露时,心脏系数降低,肝脏、肾脏、肺脏、脾脏、心脏和胸肌中镉含量增加,肾脏中硒含量和心脏中钙含量降低;添加耐镉乳酸菌对镉暴露仔鸡心脏系数的降低无改善作用,但降低了脾脏和肝
The aim of this experiment was to study the effects of cadmium(Cd)-tolerant Lactobacillus on body weight,organ coefficients and contents of Cd,calcium(Ca),iron(Fe),zinc(Zn),copper(Cu),manganese(Mn)and selenium(Se)in tissues of Cd-exposed chickens.A total of 30 one-day-old Rugao yellow chickens were randomly divided into 3 groups with 10 replicates per group and 1 chicken per replicate.Chickens in the control group were fed 1 mL/(d·bird)of sterile physiological saline via gavage from the 3rd week to the 6th week;chickens in the Cd-exposed group were fed 1 mL/(d·bird)of sterile physiological saline via gavage from the 3rd week to the 6th week,and were given drinking water with 5 mg/L Cd from the 4th week to the 6th week;chickens in the Cd+Cd-tolerant Lactobacillus group were fed 1 mL/(d bird)of Cd-tolerant Lactobacillus liquid(1×10^(9) CFU/mL)via gavage from the 3rd week to the 6th week,and were given drinking water with 5 mg/L Cd from the 4th week to the 6th week.The experimental period was 6 weeks,including 2 weeks of preliminary trial period and 4 weeks of trial period.The results showed as follows:1)there was no significant difference in body weight of chickens among all groups(P>0.05).2)The heart coefficient of the Cd-exposed group and the Cd+Cd-tolerant Lactobacillus group was significantly lower than that of the control group(P<0.05),and there was no significant difference in the heart coefficient between the Cd-exposed group and the Cd+Cd-tolerant Lactobacillus group(P>0.05).3)The contents of Cd in all tissues of the Cd-exposed group were significantly higher than those of the control group(P<0.05),and the contents of Cd in tissues from high to low were kidney>liver>spleen>lung>heart>breast muscle.The spleen Cd content of the Cd+Cd-tolerant Lactobacillus group was significantly lower than that of the Cd-exposed group(P<0.05).4)The liver Se content of the Cd+Cd-tolerant Lactobacillus group was significantly lower than that of the control group and the Cd-exposed group(P<0.05).The kidney Se content of the
作者
蒲俊华
陈大伟
刘茵茵
李惠嘉
陆俊贤
张小燕
唐梦君
唐修君
高玉时
PU Junhua;CHEN Dawei;LIU Yinyin;LI Huijia;LU Junxian;ZHANG Xiaoyan;TANG Mengjun;TANG Xiujun;GAO Yushi(Jiangsu Institute of Poultry Sciences,Yangzhou 225125,China;College of Animal Science and Veterinary Medicine,Shandong Agriculture University,Tai’an 271018,China)
出处
《动物营养学报》
CAS
CSCD
北大核心
2021年第8期4730-4739,共10页
CHINESE JOURNAL OF ANIMAL NUTRITION
基金
“十三五”国家重点研发项目(2016YFD0501208)
江苏现代农业(肉鸡)产业技术体系建设项目(JATS[2020]359)
江苏省家禽遗传育种重点实验室项目(JQLAB-ZZ-201707)
扬州市现代农业项目(YZ2020049)
扬州市社会发展项目(YZ2020061)。
关键词
镉
耐镉乳酸菌
仔鸡
脏器系数
矿物元素
Cd
Cd-tolerant Lactobacillus
chickens
organ coefficients
mineral elements
