| 摘要: |
| 为研究不同复合氨基酸铁、锌络合物的添加量对肉仔鸡生产性能的影响。选取360只体重相近的1日龄AA商品代雏鸡，采用单因子试验设计，随机分成6组，每组3个重复，每个重复20只鸡；对照组(CON组)饲喂基础饲粮，铁、锌来源为七水硫酸亚铁和无水硫酸锌，添加量都为100 mg/kg；其他5组设为试验组，铁、锌来自复合氨基酸络合物，铁和锌的添加量为25(Ⅰ组)、50(Ⅱ组)、75(Ⅲ组)、100(Ⅳ组)、125(Ⅴ组)mg/kg。在21和42日龄时进行采血和屠宰，测定生产性能、屠宰性能和不同组织中铁、锌的浓度。结果表明:1)21日龄试验Ⅱ组平均体重显著高于CON组(P<0.05)；42日龄试验Ⅴ组平均体重显著高于CON组(P<0.05)。2)22~42日龄和1~42日龄试验Ⅴ组平均日采食量显著高于CON组(P<0.05)；22~42日龄试验Ⅴ组平均日增重显著高于CON组(P<0.05)，各组间料重比无显著差异(P>0.05)。3)21日龄试验Ⅱ组胸肌率显著高于对照组(P<0.05)，42日龄试验Ⅴ组胸肌率显著高于CON组(P<0.05)，其他各组屠宰性能指标差异不显著(P>0.05)。4)试验Ⅲ组和Ⅴ组肝脏中的铁、锌浓度显著高于对照组(P<0.05)。因此，在基础饲粮中添加氨基酸铁、锌络合物可以提高肉仔鸡的生产性能，增加对铁、锌的有效利用，间接减少对环境的污染；并且试验中添加50和125 mg/kg的2组效果较好，但考虑低能减排问题还是以50 mg/kg的添加量最佳。 |
| 关键词: 肉仔鸡 复合氨基酸 铁、锌络合物 生产性能 |
| DOI：10.11841/j.issn.1007-4333.2020.02.08 |
| 投稿时间：2019-07-19 |
| 基金项目:国家自然科学基金项目(31572430)；现代农业产业技术体系专项资金资助(CARS-36) |
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| Effects of different complex amino acid iron/zinc chelate additive amount on production performance of broiler chickensDENG Bobo, FENG Baobao, LIU Mingmei, HUO Yongjiu, ZHAO Guoqi* |
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DENG Bobo,FENG Baobao,LIU Mingmei,HUO Yongjiu,ZHAO Guoqi
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| (College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China) |
| Abstract: |
| The purpose of this experiment was to study the effects of iron and zinc chelate of different complex amino acid on the production performance of broiler chickens. A total of 360 1-day-old Arbor Acre commercial broiler chickens of similar body weight were selected and randomly assigned to 6 groups with 3 replicates in each group, and 20 chicks of each replicate. The control group was fed with the basic diet with 100 mg/kg of zinc(ZnSO4)and iron(FeSO4·7H2O)content. The other 5 groups were experimental groups and iron and zinc came from complex amino acid chelate. The contents of iron and zinc were 25(group Ⅰ), 50(group Ⅱ), 75(group Ⅲ), 100(group Ⅳ), 125(group Ⅴ)mg/kg, respectively. At 21 and 42 days, blood sampling and slaughter were conducted. The production performance, slaughter performance and concentration of iron and zinc in different tissues were measured. The results were as follows: 1)The group Ⅱ's average body weight was significantly higher than that of the control group(P<0. 05)at 21 day; The group Ⅴ's average body weight was significantly higher than that of the control group(P<0. 05)at 42 day. 2)The average daily feed intake of the group V at 22 to 42 days of age and 1 to 42 days of age was significantly higher than that of control group(P<0. 05); The average daily weight gain of the group V from 22 to 42 days of age was significantly higher than that of the control group(P<0. 05). There was no significant difference in feed weight-to-body weight ratio between groups(P>0. 05). 3)The breast muscle rate of the group II from 21 days of age was significantly higher than that of the control group(P<0. 05), The breast muscle rate of the group V from 42 days of age was significantly higher than that of the control group(P<0. 05). Other slaughter performance indicators displayed no significances(P>0. 05). 4)The zinc and iron of group Ⅲ and group V in liver were higher than that of control group(P<0. 05). It was concluded that adding amino acid iron and zinc chelate in basal diet could improve the performance of broiler chickens, increase the effective use of iron and zinc, and indirectly reduce environmental pollution. The effects of adding 50 and 125 mg/kg in the experiment were better, but considering the low energy emission reduction problem, the addition of 50 mg/kg was optimal. |
| Key words: broiler chicken complex amino acid iron/zinc chelate production performance |
