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当前位置: 首页 > 文章 > 日粮碘添加水平对断奶至2月龄生长肉兔生长性能和血清生化指标的影响 动物营养学报 2010,22 (4) 1076-1080
Position: Home > Articles > Effects of Dietary Iodine Supplementation Levels on Growth Performance and Serum Biochemical Indices of Growing Meat Rabbits from Weanling to 2-month-old Chinese Journal of Animal Nutrition 2010,22 (4) 1076-1080

日粮碘添加水平对断奶至2月龄生长肉兔生长性能和血清生化指标的影响

作  者：
刘汉中;麻名文;李鑫;辛磊磊;李福昌
单  位：
山东农业大学动物科技学院;四川省草原科学研究院
关键词：
碘;生长肉兔;生长性能;血清生化指标
摘  要：
本试验旨在研究日粮碘添加水平对断奶至2月龄生长肉兔生长性能和血清生化指标的影响。选用80只平均体重为(780±50)g的35日龄断奶新西兰肉兔,随机分成4组(每组20个重复,每个重复1只兔),分别饲喂在基础日粮中添加0(对照)、0.1、0.5和2.5mg/kg碘的试验日粮,预试期7d,正试期23d。结果表明:日粮碘添加水平对平均日增重(ADG)有显著影响(P<0.05),0.1和0.5mg/kg组的ADG显著高于对照组(P<0.05)。日粮碘添加水平对料重比(F/G)有显著影响(P<0.05),0.5mg/kg组的F/G显著低于对照组和0.1mg/kg组(P<0.05)。日粮碘添加水平对血清常规生化指标影响不显著(P>0.05)。日粮碘添加水平对血清免疫球蛋白A(IgA)含量有显著影响(P<0.05),0.5mg/kg组的IgA含量显著高于其他各组(P<0.05)。日粮碘添加水平对血清免疫球蛋白G(IgG)和免疫球蛋白M(IgM)含量无显著影响(P>0.05)。日粮碘添加水平对血清三碘甲腺原氨酸(T3)含量有极显著影响(P<0.01),随着碘添加水平的增加,T3含量先升高后降低,当碘添加量为0.5mg/kg时T3含量达到最大值。日粮碘添加水平对血清四碘甲腺原氨酸(T4)含量的影响不显著(P>0.05)。综上所述,断奶至2月龄生长肉兔日粮中碘适宜添加量为0.5mg/kg(基础日粮碘含量为0.22mg/kg)。
译  名：
Effects of Dietary Iodine Supplementation Levels on Growth Performance and Serum Biochemical Indices of Growing Meat Rabbits from Weanling to 2-month-old
作  者：
LIU Hanzhong1 MA Mingwen2 LI Xin2 XIN Leilei2 LI Fuchang2(1.Sichuan Provincial Grassland Research Institute,Chengdu 611731,China;2.College of Animal Science,Shandong Agricultural University,Taian 271018,China)
关键词：
iodine;growing meat rabbits;growth performance;serum biochemical indices
摘  要：
This trial was conducted to study the effects of dietary iodine supplementation levels on growth performance and serum biochemical indices of growing meat rabbits from weanling to 2-month-old.Eighty 35-day-old weanling New Zealand rabbits with average body weight of(780±50) g were randomly assigned to 4 groups with 20 replicates per group and 1 rabbit per replicate.The rabbits in 4 groups were fed basal diet supplemented with 0(control),0.1,0.5 and 2.5 mg/kg iodine,respectively.The trial lasted for 7 days for adaptation,and 23 days for test.The results showed as follows:dietary iodine supplementation levels significantly affected average daily gain(ADG)(P<0.05) and the ADG in 0.1 and 0.5 mg/kg groups was higher than that in control group(P<0.05).The feed/gain(F/G) was significantly affected by the dietary iodine supplementation levels(P<0.05) and the F/G in 0.5 mg/kg group was lower than that in control group and 0.1 mg/kg group(P<0.05).The serum routine biochemical indices were not significantly affected by the dietary iodine supplementation levels(P>0.05).Dietary iodine supplementation levels significantly affected serum immunoglobulin A(IgA) content(P<0.05) and the IgA content in 0.5 mg/kg group was higher than that in other groups(P<0.05).The serum immunoglobulin G(IgG) and immunoglobulin M(IgM) contents were not significantly affected by dietary iodine supplementation levels(P>0.05).Dietary iodine supplementation levels significantly affected serum triiodothyronine(T3) content(P<0.01).With the increase of the iodine supplementation levels,the T3 content was increased firstly and then decreased,and the highest T3 content was found in 0.5 mg/kg group.There was no significant difference in serum tetraiodothyronine(T4) content among different groups(P>0.05).In conclusion,the appropriate iodine supplementation level in the diet of growing meat rabbits from weanling to 2-month-old was 0.5 mg/kg(the content of iodine in basal diet was 0.22 mg/kg).

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