蛋鸡日粮钙水平对其生产性能、蛋品质及机体钙磷含量的影响  

Dietary levels of calcium on laying performance,egg quality and contents of calcium and phosphorous of laying hens

作　　者：黄福标[1] 谭春萍[1] 于冬玲[1] 张艳雯[1] 黄春兰[1] 凌小莲 HUANG Fubiao;TAN Chunping;YU Dongling;ZHANG Yanwen;HUANG Chunlan;LING Xiaolian(Nanning college,Nanning,Guangxi Province 530200,China)

机构地区：[1]南宁学院,广西南宁530200

出　　处：《中国饲料》2018年第18期58-62,共5页China Feed

基　　金：南宁学院校级科研项目(2017XJ03);南宁学院教授培育工程项目(2016JSGC11);南宁学院校级教改项目(2015XJJG06)

摘　　要：文章旨在研究日粮中钙水平对蛋鸡生产性能、蛋品质、血清钙磷及胫骨成分的影响。试验选择健康、产蛋率一致的480 d高龄褐壳蛋鸡600只,随机分为5组,每组5个重复,每个重复24只鸡。蛋鸡饲喂5种以玉米-豆粕为主要原料的日粮,各组日粮钙水平分别为3.5%、3.7%、3.9%、4.1%和4.3%,试验共进行10周。结果显示:日粮钙水平对蛋鸡平均日采食量、产蛋率和蛋重无显著影响(P>0.05)。但当日粮钙水平由3.5%升高至4.3%时,破蛋率表现为显著线性下降(P<0.05)。日粮钙水平对鸡蛋蛋壳样色和哈弗单位无显著影响(P>0.05)。随着钙水平的升高,蛋黄颜色、蛋壳强度和蛋壳厚度表现为显著线性升高(P<0.05)。日粮钙水平对血清钙和磷水平无显著影响(P>0.05)。胫骨强度随日粮钙水平的升高有升高趋势,但差异不显著(P=0.09)。胫骨中灰分、钙和磷含量随日粮钙水平的升高无显著的线性或二次曲线相关(P>0.05)。结论 :日粮钙水平对高日龄产蛋鸡的采食量和产蛋率无显著影响,但钙水平达到4.3%时可以提高蛋壳质量。高日龄褐壳蛋鸡的适宜钙水平至少要达到3.9%才能降低破蛋率和提高蛋壳质量。This experiment was conducted to evaluate the dietary levels of calcium(Ca)on laying performance,egg quality,contents of serum calcium and phosphorous and tibia composition of laying hens.A total of 600 Brown-eggshell laying hens aged 480 d selected by the health and laying performance,were randomly allotted to 5 groups with 5 replicates of 24 hens.The diets for the 5 groups were corn-soybean meal based,and the levels of calcium were 3.5%,3.7%,3.9%,4.1%and 4.3%,respectively.The trial last 10 weeks.Results showed that there were no significant linear and quadratic trends of dietary calcium levels affecting feed intake,egg production and egg weight(P>0.05).With increasing dietary Ca levels from 3.5%to 4.3%,cracked eggs significantly linearly reduced(P<0.05).There were no significant linear and quadratic trends of dietary Ca levels affecting eggshell color and Haugh uni(t P>0.05).Yolk color score was linearly increased as dietary Ca level increase(d P<0.05).The strength and thickness of eggshell were significantly increased by dietary Ca levels in a linear manne(r P<0.05).There were no significant linear and quadratic trends of dietary Ca levels affecting concentration of serum Ca and phosphorus(P>0.05).With increase in dietary Ca levels,the tibia strength tended to be increased,but not significantly(P=0.09).There were no significant linear or quadratic trends of dietary Ca affecting ash,Ca and phosphorus contents in tibia among groups(P>0.05).

关 键 词：蛋鸡 钙水平 生产性能 蛋品质 钙磷含量 

分 类 号：S831[农业科学—畜牧学]