低蛋白日粮补充胍基乙酸对蛋鸡生产性能、蛋品质和肝脏脂质代谢的影响  

Effects of low protein diet supplemented with guanidine acetic acid on performance,egg quality and liver lipid metabolism of laying hens

作　　者：揭念宽 JIE Niankuan(Shanxian Animal Husbandry Service Center,Shanxian,Shandong Province 274300,China)

机构地区：[1]单县畜牧服务中心,山东单县274300

出　　处：《中国饲料》2024年第18期61-64,共4页China Feed

摘　　要：文章旨在探究低蛋白日粮补充胍基乙酸对蛋鸡生产性能、蛋品质和肝脏脂质代谢的影响。试验将800羽京白蛋鸡随机分为4组,每组5个重复,每重复40羽。其中对照组饲喂基础日粮,各试验组饲喂在低蛋白日粮的基础上添加0、300、600 mg/kg胍基乙酸的试验日粮。试验为期9周,包括1周预饲期和8周正试期。与对照组相比,低蛋白日粮添加0和300 mg/kg GCC组产蛋率显著降低3.56%和3.66%(P<0.05);料蛋比显著提高3.02%和2.59%(P<0.05);次品蛋率显著提高3.71%和2.52%(P<0.05);低蛋白日粮添加600 mg/kg GCC组产蛋率、料蛋比和次品蛋率与对照组无显著差异(P>0.05)。与对照组相比,低蛋白日粮添加0和300 mg/kg GCC组蛋壳强度显著降低(P<0.05);在低蛋白日粮组中,随GCC添加量的提高,蛋白高度和哈氏单位显著提高(P<0.05),但仍低于对照组(P<0.05)。与对照组相比,低蛋白日粮添加0和300 mg/kg GCC组蛋鸡肝脏FAS基因表达水平显著降低(P<0.05);低蛋白日粮添加0~600 mg/kg GCC组蛋鸡肝脏PPARα基因表达水平显著降低(P<0.05);在低蛋白日粮各组中,随GCC添加量提高,蛋鸡肝脏中LXRa基因表达水平显著提高(P<0.05),但仍低于对照组(P<0.05)。总之,补充GCC对饲喂低蛋白日粮蛋鸡的生产性能和蛋品质有一定积极影响,其中,600 mg/kg的饲喂效果最佳。The aim of this study is to investigate the effects of supplementing guanylacetic acid with low protein diets on the production performance,egg quality,and liver lipid metabolism of laying hens.800 Beijing white laying hens are divided into 4 groups,with 5 replicates in each group,and 40 chickens per replicate.Each experimental group was fed with experimental feed supplemented with 0,300,and 600 mg/kg guanidinoacetic acid on the basis of low protein feed.The experiment lasted for 9 weeks,including 1 week of pre trial and 8 weeks of regular trial.Compared with the control group,the egg production rate of the low protein diet supplemented with 0 and 300 mg/kg GCC group was significantly reduced by 3.56%and 3.66%(P<0.05);The feed to egg ratio significantly increased by 3.02%and 2.59%(P<0.05);The rate of defective eggs significantly increased by 3.71%and 2.52%(P<0.05);There was no significant difference in egg production rate,feed to egg ratio,and defective egg rate between the low protein diet supplemented with 600 mg/kg GCC group and the control group(P>0.05).Compared with the control group,the eggshell strength of the low protein diet supplemented with 0 and 300 mg/kg GCC groups was significantly reduced(P<0.05);In each group of low protein diets,as the amount of GCC added increased,the protein height and Hasselblad unit significantly increased(P<0.05),but still lower than the control group(P<0.05).Compared with the control group,the expression level of FAS gene in the liver of laying hens in the low protein diet supplemented with 0 and 300 mg/kg GCC groups was significantly reduced(P<0.05);Low protein diet supplemented with 0-600 mg/kg GCC group layer liver PPARαThe gene expression level significantly decreased(P<0.05);In the low protein diet groups,with the increase of GCC addition,the expression level of LXRa gene in the liver of laying hens significantly increased(P<0.05),but it was still lower than the control group(P<0.05).In summary,supplementing GCC has a certain positive impact on the production performa

关 键 词：低蛋白日粮 胍基乙酸 蛋鸡 生产性能 蛋品质 

分 类 号：S816.7[农业科学—饲料科学]