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当前位置: 首页 > 文章 > 日粮赖氨酸对70~90日龄肉兔生长性能、血清IGF-Ⅰ浓度及其基因表达的影响 中国畜牧兽医 2011,38 (6) 10-13
Position: Home > Articles > Effects of Dietary Lysine on Growth Performance,Serum Insulin-like Growth Factor-Ⅰ(IGF-Ⅰ) Concentration and IGF-Ⅰ mRNA Expression in Meat Rabbits from 70 to 90 days of Age China Animal Husbandry & Veterinary Medicine 2011,38 (6) 10-13

日粮赖氨酸对70~90日龄肉兔生长性能、血清IGF-Ⅰ浓度及其基因表达的影响

作  者：
井文倩;张宁波;李福昌
单  位：
山东农业大学动物科技学院;临沂大学生命科学学院
关键词：
赖氨酸;生长肉兔;IGF-Ⅰ;生长性能
摘  要：
为研究玉米-豆粕型日粮中赖氨酸水平对70~90日龄生长肉兔生产性能、血清类胰岛素生长激素浓度及其基因表达的影响。选择100只体重接近、前期饲养相同的70日龄新西兰肉兔为试验动物,随机分成5组,以赖氨酸含量分别为0.55%、0.65%、0.75%、0.85%和0.95%的5种日粮为试验处理,进行为期20 d的饲养试验。结果表明,随日粮赖氨酸水平的增加,90日龄生长肉兔生长性能组间差异不显著(P>0.05);血清胰岛素、生长激素、类胰岛素生长激素浓度显著提高(P<0.05),分别在0.85%,0.75%和0.95%达到最大值;肝脏和肌肉IGF-Ⅰ相对表达量也明显增加(P<0.05)。综上所述,70~90日龄生长肉兔血清IGF-Ⅰ浓度和基因表达受日粮赖氨酸水平的影响。
译  名：
Effects of Dietary Lysine on Growth Performance,Serum Insulin-like Growth Factor-Ⅰ(IGF-Ⅰ) Concentration and IGF-Ⅰ mRNA Expression in Meat Rabbits from 70 to 90 days of Age
作  者：
JING Wen-qian1,ZHANG Ning-bo1,LI Fu-chang2(1.College of Life Science,Linyi University,Linyi 276005,China;2.College of Animal Science and Technology,Shandong Agricultural University,Taian 271018,China)
关键词：
lysine;growing rabbits;IGF-Ⅰ;growth performance
摘  要：
The experiment was conducted to study the effects of different amounts of dietary lysine on production performance,serum insulin-like growth factor-Ⅰ(IGF-Ⅰ) concentration and IGF-Ⅰ mRNA expression of growing rabbits.One hundred of 70 days New Zealand rabbits were allocated to individual cages and randomly divided into five groups.Five diets containing 0.55%,0.65%,0.75%,0.85% and 0.95% lysine respectively,were formulated as experimental treatments.The results suggested there was no significant difference in daily weight gain,feed/gain ratio(P>0.05) with the increasing dietary lysine,however serum GH,IGF-Ⅰ and insulin(Ins) content increased significantly(P<0.05) and reached the largest value under the lysine adding content of 0.85%,0.75% or 0.95% respectively.The IGF-Ⅰ relative expression level in the liver and muscle was up-regulated accompanying with the dietary lysine level increased.The present study suggested that the dietary lysine levels have significant effect in the IGF-Ⅰ expression and serum content.

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