| 蛋白酶和益生菌复合制剂对白羽肉鸡生长性能、养分利用率和粪便有害气体排放的影响 |
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| 引用本文： | 谢谦,杨媚,张海涵,宋泽和,赵丽芳,郭宝林,王璐,贺喜.蛋白酶和益生菌复合制剂对白羽肉鸡生长性能、养分利用率和粪便有害气体排放的影响[J].中国畜牧杂志,2021(2):165-169. |
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| 作者姓名： | 谢谦 杨媚 张海涵 宋泽和 赵丽芳 郭宝林 王璐 贺喜 |
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| 作者单位： | 湖南农业大学动物科学技术学院;湖南家禽安全生产工程技术研究中心;北京昕大洋科技发展有限公司 |
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| 基金项目： | 国家重点研发计划(2017YFD0500506);湖南农业大学重大科研项目(17PYXM04);湖南农业大学“双一流”建设项目(SYL201802015)。 |
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| 摘 要： | 本试验旨在研究饲粮中添加蛋白酶和益生菌复合制剂对白羽肉鸡生长性能、养分利用率和粪便有害气体排放的影响。试验选取体重接近、健康的1日龄爱拔益加(AA)肉仔鸡192只,按照体重随机分为2组,每组8个重复,每个重复12只鸡。对照组饲喂基础饲粮,试验组饲喂添加蛋白酶、枯草芽孢杆菌、地衣芽孢杆菌、凝结芽孢杆菌、酵母菌复合制剂的基础饲粮,其中1~14、15~28、29~42日龄饲粮中分别添加500、400、300 mg/kg复合制剂。试验期42 d。结果表明:与对照组相比,试验组42日龄体重有上升趋势(P=0.08),22~42日龄和全期的平均日增重有上升趋势(P=0.08),22~42日龄和全期的耗料增重比显著降低;试验组与对照组在1~21日龄的平均日采食量、平均日增重、耗料增重比以及在22~42日龄和全期的平均日采食量均无显著差异;与对照组相比,试验组粗蛋白质利用率极显著上升,试验组粗脂肪、粗纤维利用率显著上升;两组物质、能量利用率无显著差异。与对照组相比,试验组白羽肉鸡发酵粪便氨气含量有下降趋势(P=0.08),各组白羽肉鸡发酵粪便硫化氢含量无显著差异。综上所述,蛋白酶和益生菌复合制剂可以提高白羽肉鸡生长性能和养分利用率,降低氨气的产生和排放。
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| 关 键 词： | 蛋白酶 益生菌 生长性能 养分利用率 有害气体 |
Effect of Protease and Probiotic Compound Preparation on Growth Performance,Nutrient Utilization and Excreta Noxious Gas Emission of White Feather Broilers |
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| XIE Qian,YANG Mei,ZHANG Haihan,SONG Zehe,ZHAO Lifang,GUO Baolin,WANG Lu,HE Xi.Effect of Protease and Probiotic Compound Preparation on Growth Performance,Nutrient Utilization and Excreta Noxious Gas Emission of White Feather Broilers[J].Chinese Journal of Animal Science,2021(2):165-169. |
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| Authors: | XIE Qian YANG Mei ZHANG Haihan SONG Zehe ZHAO Lifang GUO Baolin WANG Lu HE Xi |
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| Institution: | (College of Animal Science and Technology,Hunan Agricultural University,Hunan Changsha 410128,China;Hunan Engineering Research Center of Poultry Production Safety,Hunan Co-Innovation Center of Animal Production Safety,Hunan Changsha 410128,China;Beijing Smistyle Sci.&Tech.Development CO.,LTD.,Beijing 100081,China) |
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| Abstract: | This experiment was carried out to investigate the effect of protease and probiotic compound preparation on growth performance,nutrient utilization and excreta noxious gas emission of white feather broilers.A total of 192 healthy1-day-old Arbor Acres(AA)broilers with similar body weight were randomly allotted into 2 groups with 8 replicates per group and 12 broilers per replicate.Broilers in control group were fed a basal diet,the experimental group was fed with a basic diet supplemented with protease,Bacillus subtilis,Bacillus licheniformis,Bacillus coagulans,and yeast complex preparations,of which 1 to 14 days diet was supplemented with 500 mg/kg compound preparation,and 15 to 28 days add 400 mg/kg compound preparation,and 29 to 42 days add 300 mg/kg compound preparation.The experiment lasted for 42 days.The results showed that compared with the control group,the body weight of broiler in the experimental group has an increasing trend at 42 days(P=0.08).The average daily weight gain of 22 to 42 days and the whole period has an upward trend(P=0.08).Compared with the control group,the F/G at 22 to 42 days and the whole period was significantly reduced.There was no significant difference in the average daily feed intake,average daily weight gain and F/G of broilers from 1 to 21 days.There was no significant difference in average daily feed intake of broilers from 22 to 42 days and the whole period.Compared with the control group,the utilization rate of crude protein of the broiler in the experimental group increased extremely significantly,and the utilization rate of crude fat and crude fiber in the experimental group increased significantly.There was no significant difference in dry matter and energy utilization in each group.Compared with the control group,the ammonia content of excreta in the experimental group has a decreasing trend(P=0.08).There was no significant difference in hydrogen sulfide content in excreta of each group.In conclusion,protease and probiotic compound preparation can improve the growth performance and nutrient utilization of white feather broiler.Protease and probiotic compound preparation can also reduce exceta ammonia emission,which is conducive to the growth of white feather broiler and reduce ammonia production. |
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| Keywords: | Protease Probiotic Growth performance Nutrient utilization Noxious gas |
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