| 摘要: |
| 为研究肉桂醛替代肉用仔鸡日粮中抗生素的使用效果，选用1日龄健康青脚麻肉用雏鸡360只，随机分为4组：试验1（对照）、2、3和4组。每组设3个重复，每个重复30只雏鸡。在基础日粮中添加抗生素（1~3周龄：吉他霉素预混剂50 mg/kg和盐霉素预混剂75 mg/kg；4~8周龄：吉他霉素预混剂10 mg/kg）后，饲喂对照组鸡；在基础日粮中分别添加肉桂醛预混剂40、80、120 mg/kg后，分别饲喂试验2、3和4组鸡。饲养试验周期56 d，观测鸡的健康状况、增重、血清生化指标、肠道菌群和肉质等。结果表明：1）在整个饲养周期，试验3组鸡的平均日增重较对照组提高5.68%；试验3组的料重质量分数（2.14±0.17）最低，但与其他组的差异不显著；2）与对照组比较，试验3、4组鸡血清谷丙转氨酶活性分别降低43.66%、61.97%，试验4组鸡血清谷草转氨酶活性降低9.27%，试验2组鸡血清总蛋白提高14.34%，试验2、4组鸡血清尿素氮都降低24.32%，试验3组鸡血清IgA提高31.03%，试验3、4组鸡血清IgG分别提高61.47%和66.97%，试验2、3、4组鸡血清IgM分别提高169.09%、283.64%和300.00%；3）试验3、4组鸡胸肌失水率分别较对照组降低17.21%和14.10%。本研究证实：肉桂醛能促进肉用仔鸡的生长，改进营养生化代谢，增强鸡体免疫功能，提高鸡肉品质；肉桂醛在肉用仔鸡中的应用效果好于抗生素；肉桂醛预混剂在肉用仔鸡日粮中的适宜添加量为80~120 mg/kg。 |
| 关键词: 肉用仔鸡 肉桂醛 抗生素 替代 应用效果 |
| DOI：10.11841/j.issn.1007-4333.2019.04.12 |
| 分类号: |
| 基金项目:安徽省现代农业产业技术体系岗位专家项目（160607） |
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| Substitution effects of cinnamylaldehyde for antibiocs in broiler diet |
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ZHOU Ming1, WU Dong2, WANG Mengchun1, SU Di1, WANG Xiaofei1
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1.Animal Science and Technology College, Anhui Agricultural University, Hefei 230036, China;2.Institute of Animal Husbandry and Veterinary Medicine, Anhui Academy of Agricultural Sciences, Hefei 230001, China
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| Abstract: |
| To study the substitution effects of cinnamylaldehyde for antibiocs in broiler diet,360 healthy 1 day of age broilers were selected and randomly divided into 4 groups:Group 1 (the control),the experimental group 2,3 and 4 with 3 replicates per group and 30 broilers per replicate.The control group broilers were fed basal diet supplemented antibiotics (1-3 weeks of age:kitasamycin premix 50 mg/kg and salinomycin premix 75 mg/kg;4-8 weeks of age:kitasamycin premix 10 mg/kg);Group 2,3 and 4 broilers were fed basal diet supplemented with 40,80 and 120 mg/kg of cinnamaldehyde premix,respectively.The feeding experimental period was 56 d.The broiler health status,weight gain,serum biochemical indexes,intestinal flora and meat quality were observed.The results showed that:1) At 1-8 weeks of age,the average daily gain of the Group 3 broilers increased by 5.68% compared with the control group.The feed weight ratio (2.14±0.17) of the experimental Group 3 was the lowest.2) Compared with the control group,the activities of the glutamic-pyruvic transaminase in serum of the Group 3 and 4 broilers decreased respectively by 43.66% and 61.97%.The activities of the glutamic-oxaloacetic transaminase in serum of Group 4 broilers decreased by 9.27%;The total protein in serum of Group 2 broilers increased by 14.34%.The urea nitrogen in serum of Group 2,4 broilers decreased both by 24.32%.IgA in serum of Group 3 broilers increased by 31.03%.IgG in serum of Group 3,4 broilers increased respectively by 61.47% and 66.97%.IgM in serum of Group 2,3 and 4 broilers increased respectively by 169.09%,283.64% and 300.00%.3)The water loss rate of pecloralis muscles of Group 3 and 4 broilers decreased respectively by 17.21% and 14.10%.This study showed that cinnamaldehyde promoted the growth of broilers,improved the metabolism of nutrition and biochemistry,enhanced immune function and improved the quality of chicken meat.The application effects of cinnamaldehyde in broilers were better than antibiotics,and the optimal supplementation of cinnamaldehyde premix in broiler diet was 80-120 mg/kg. |
| Key words: broiler cinnamaldehyde antibiotic substitution application effect |
