| 摘要: |
| 按出壳体重对等的原则,将海布罗混合健雏分成4组进行饲养试验。前后两期各组处理为:I组喂基础饲粮,Ⅱ,Ⅲ，Ⅳ组分别添加0.1%,0.2%和0.3%的L-赖氨酸·HCL.研究结果表明,在我国现行标准的能量和蛋白质条件下,赖氨酸水平对2,4,8周末体重无显著影响,但6周末体重Ⅱ,Ⅲ组极显著高于I组,Ⅳ组也显著高于I组;前期赖氨酸水平以1.18%为好,后期以1.00%为佳.若把后期细分为5～6和7～8周龄,则赖氨酸水平分别为1.00%和0.84%. |
| 关键词: 肉仔鸡，赖氨酸，增重，饲料转化率 |
| DOI： |
| 分类号:S831.5 |
| 基金项目:西北农业大学青年科学基金资助项目 |
|
| Lysine Requirement For Broiler Chickens Ⅱ.Effects of Dietary Lysine Levels on Production Performances |
|
Gong Yuesheng Wang Zkiyou Yao Qingdong
|
| Abstract: |
| In accordance with the principle of equality of chick body weight just out
of shells,Hybro mixed starters were divieded into 4 groups to carry out feeding trials.
The treatment of each group in the former and latter two batches was as follows: group
Ⅰ was fed with the basal diets,groups Ⅱ,Ⅲ and IV were fed with the basal diets containing 0.1%,0.2% and 0.3% of L-lysine.HCL.Results indicated that under the current standards of energy and protein in China,lysine level had no significant effect upon
chick body weight at the end of 2,4,8 weeks;but at the end of 8 weeks,body weight in
group Ⅱand Ⅲ,was extremely higher than that in group Ⅰ.So,body weight in group
IV is also significantly higher than that in group I.In the former stage,it is better to
have lysine level of 1.18%,and in the latter stage,the lysine level of 1.00% is the
best.If the chickens in the latter stage and divided into 5～6 week-old and 7～8 week-old groups,the lysine level can be 1.00% and 0.84% respectively. |
| Key words: broiler, lysine ,weight gain , feed conversion efficency |
