低蛋白日粮添加酶菌肽复合制剂对肉鸡生长性能、屠宰性能及排泄物臭味物质的影响  

Effect of low protein diet supplemented with enzyme bacterial peptide compound on growth performance,slaughter performance and odor substances in excreta of broilers

作　　者：王宇 荆佳林 龚建刚[3] 张磊正 高腾雨 赵娜[1] 刘猛 冯志华[1] WANG Yu;JING Jia-lin;GONG Jian-gang;ZHANG Lei-zheng;GAO Teng-yu;ZHAO Na;LIU Meng;FENG Zhi-hua

机构地区：[1]河北农业大学动物科技学院,河北保定071000 [2]河北玖兴农牧发展有限公司,河北保定071000 [3]河北农业大学食品科技学院,河北保定071000 [4]丰南区黄各庄动物防疫站,河北唐山063300

出　　处：《饲料研究》2023年第5期29-35,共7页Feed Research

基　　金：河北农业大学2021—2022大学生创新创业训练计划项目(项目编号:2022047);河北省重点研发计划项目课题“肉鸡无抗健康养殖营养与环境调控关键技术研究(项目编号:20326617D)”;河北省现代农业产业技术体系蛋肉鸡创新团队建设项目(项目编号:HBCT2018150203)。

摘　　要：试验旨在研究低蛋白日粮中添加酶菌肽复合制剂对肉鸡生长性能、屠宰性能及排泄物中臭味物质的影响。选取390只1日龄哈伯德肉仔鸡,随机分为5组,每组6个重复,每个重复13只鸡。正常蛋白组(NP组)肉仔鸡饲喂基础日粮(前期、中期、后期粗蛋白水平分别为22%、20%、19%),低蛋白组(LP组)肉仔鸡饲喂低蛋白氨基酸平衡日粮(前期、中期、后期粗蛋白水平分别为19%、17%、16%),试验Ⅰ组、Ⅱ组、Ⅲ组分别在低蛋白日粮基础上添加0.2%(Ⅰ组)、0.4%(Ⅱ组)和0.6%(Ⅲ组)的酶菌肽复合制剂。结果显示,与NP组相比,LP组肉鸡14、35、42 d排泄物中氨气水平及42 d排泄物中吲哚含量、粪臭素含量显著降低(P<0.05)。与LP组相比,Ⅰ组、Ⅱ组、Ⅲ组14 d肉鸡排泄物中氨气水平显著降低(P<0.05)。Ⅲ组肉鸡的经济效益最好,利润比LP组提高3.09%,比NP组提高8.98%;Ⅲ组欧洲效益指数比LP组提高15.47%,比NP组提高5.63%。研究表明,低蛋白日粮中添加适量酶菌肽复合制剂可在一定程度上降低肉鸡料重比,减少排泄物中臭味物质的含量,减少环境污染,适宜添加剂量为0.6%。The experiment was to investigate the effect of adding compound enzyme peptides in low protein diet on growth performance,slaughter performance and odor in excreta of broilers.A total of 390 one-day-old Hubbard broilers were randomly divided into five groups,with six replicates in each group and 13 broilers in each replicate.Broilers in normal protein group(NP group)were fed with a basal diet(crude protein levels in early,middle and late periods were 22%,20%and 19%,respectively),while broilers in low protein group(LP group)were fed with a low protein amino acid balance diet(crude protein levels in early,middle and late periods were 19%,17%and 16%,respectively).The other experimental groups were supplemented with 0.2%(group Ⅰ),0.4%(group Ⅱ)and 0.6%(group Ⅲ)enzyme mycopeptide complex preparations on basis of LP group diet,respectively.The results showed that compared with NP group,the ammonia concentration at 14,35,42 d,indoles content and skocyanin content of broilers in LP group were significantly decreased(P<0.05).Compared with LP group,ammonia concentration in excreta of broilers in group Ⅰ,group Ⅱ and group Ⅲ at 14 d was significantly decreased(P<0.05).Group Ⅲ had the best economic benefit,and its profit was 3.09%higher than that of LP group and 8.98%higher than that of NP group.The European benefit index was 15.47%higher than that in LP group and 5.63%higher than that in NP group.The experiment indicates that adding proper amount of enzyme peptides compound preparation in low protein diet can reduce feed to gain ratio,the content of smelly substances in excreta and environmental pollution to a certain extent,and the appropriate dosage is 0.6%.

关 键 词：低蛋白日粮 肉鸡 酶菌肽复合制剂 生长性能 屠宰性能 臭味物质 

分 类 号：S831[农业科学—畜牧学]