摘要
选取180只东乡黑羽绿壳蛋鸡随机分成3组,每组6个重复,每个重复10只。A组为对照组,饲喂基础日粮,B组、C组分别在基础日粮基础上添加120 mg/kg的羟基蛋氨酸锌和碱式氯化锌(按锌含量计)。预试期7 d、正式期28 d。结果表明,与对照组相比,日粮中添加羟基蛋氨酸锌可显著提高蛋鸡产蛋率(P<0.05);碱式氯化锌可极显著提高蛋鸡产蛋率(P<0.01),显著降低料蛋比(P<0.05);试验各组的蛋壳厚度、蛋黄指数、蛋形指数、哈氏单位差异均不显著;两种锌源均可极显著提高蛋黄中锌含量,试验第28天时,分别较对照组提高32.8%和32.3%(P<0.01)。由此可见,日粮中添加羟基蛋氨酸锌和碱式氯化锌均能改善蛋鸡生产性能,提高鸡蛋中锌含量,综合比较,添加碱式氯化锌效果更好。
One hundred and eighty green shell laying hens were randomly assigned to 3 groups with 6 replicates per group and 10 hens per replicate.The laying hens in group A were fed basal diet,and those in groups B and group C were fed diets containing 120mg/kg zinc bydroxymethionine and basic zinc chloride （metered by zinc）,respectively.The experiment lasted for 35 clays,including 7 days for pretest.The results showed that：the addition of zinc hydroxymethionine could be significantly improved laying rate （P 〈 0.05）, and the addition of basic zinc chloride could significantly improve laying rate（P 〈 0.01 ）and reduce feed/egg ratio （P 〈 0.05）;There was no significant difference in the egg shell thickness,yolk index, egg shape index, and Haugh Unit were among all treatment groups ; Supplementation of these two kind of zinc in diets could increase yolk zinc content extremely by 32.8% and 32.3% compared to control group at 28 th day（P 〈 0.01 ）.The results indicated that both zinc hydroxymethioninc and basic zinc chloride could improve growth production and increase the zinc content and the effect of basic zinc chloride is better.
出处
《中国饲料》
北大核心
2013年第2期32-34,共3页
China Feed
基金
湖南农业大学校企合作项目(10068)
关键词
羟基蛋氨酸锌
碱式氯化锌
产蛋性能
锌沉积量
绿壳蛋鸡
zinc hydroxymethionine
basic zinc chloride
laying perfomlance
iron content
green shell laying hens
