摘要
为探究不同剂量抗菌肽-纳吐素C对白羽肉鸡生长性能、屠宰性能、肠道损伤和经济效益的影响。试验选用健康1日龄罗斯308肉鸡750只,随机分成5个处理,每个处理5个重复,每个重复30只,分为对照组(基础饲粮)、抗生素组(基础饲粮+100 mg/kg 10%阿维拉霉素)、C200组(基础饲粮+200 mg/kg纳吐素C)、C400组(基础饲粮+400 mg/kg纳吐素C)、C600组(基础饲粮+600 mg/kg纳吐素C),试验期42 d。结果表明:与对照组相比,(1)各纳吐素C组可显著提高42 d肉鸡的出栏体重、1~42 d肉鸡的平均日增重和欧洲指数(P<0.05),肉鸡各阶段的平均日增重、1~21 d的平均日采食量、欧洲指数、21 d和42 d肉鸡的体重与纳吐素C的添加量呈显著的线性和二次相关(P<0.05),C600组的生长性能更接近于抗生素组。(2)各纳吐素C组可显著提高42 d的全净膛率、胸肌率和腿肌率(P<0.05),并呈显著的线性和二次相关(P<0.05),各纳吐素C组与抗生素组21 d和42 d的屠宰性能无显著差异(P>0.05)。(3)纳吐素C可显著改善肉鸡42 d的肠道损伤综合评分(P<0.05),并呈显著的线性和二次相关(P<0.05),C600组与抗生素组对肠道损伤综合评分无显著差异(P>0.05)。(4)C200、C400、C600、抗生素组可使每只鸡在生产性能分别增加收益0.17、0.27、0.25、0.61元/只。综上所述,饲粮添加纳吐素C可提高肉鸡的生长性能、屠宰性能、经济效益,改善肠道损伤,其中600 mg/kg纳吐素C效果更接近于抗生素水平。
To investigate the effects of different doses of antimicrobial peptide-natucin C on growth perfor⁃mance,slaughter performance,intestinal damage and economic benefits of white-feather broilers.750 one-day-old healthy Ross 308 broilers were randomly divided into 5 treatments with 5 repli⁃cates per treatment and 30 broilers per replicate.They were divided into control group(basal diet),antibiotic group(basal diet+100 mg/kg 10%Avilamycin),C200 group(basal diet+200 mg/kg natucin C),C400 group(basal diet+400 mg/kg natucin C)and C600 group(basal diet+600 mg/kg natucin C).The experiment lasted for 42 days.The results show that:①compared with the control group,natucin C significantly increased the entry weight of 42 d broilers,average daily gain of 1-42 d broilers and European index(P<0.05).There were significant linear and quadratic correlations between average daily gain,average daily feed intake from 1 to 21 days,European index,body weight of 21 d and 42 d broilers and the addition level of natucin C(P<0.05),and the production performance of C600 group was more similar to that of antibiotic group.②Compared with the control group,natustrin C could significantly improve the evisceration rate,chest muscle rate and leg muscle rate of 42 d(P<0.05),and there were significant linear and quadratic correlations(P<0.05).There was no sig⁃nificant difference in slaughter performance of 21 d and 42 d between natucin C group and antibiotic group(P>0.05).③Compared with the control group,natucin C could significantly improve the comprehensive score of intestinal injury of broilers 42 d(P<0.05),and there was a significant linear and quadratic correla⁃tion(P<0.05),and there was no significant difference between C600 group and antibiotic group on the com⁃prehensive score of intestinal injury(P>0.05).④Compared with the control group,C200 group,C400 group,C600 group and antibiotic group could increase the yield of each chicken in terms of production per⁃formance by 0.17,0.27,0.25,0.61 yuan/bird,respectively.In conclusion,the growth performance,slaughter performance,economic benefit and intestinal injury of broilers can be improved by the addition of natucin C in the diet,and the effect of 600 mg/kg natucin C is closer to the level of antibiotics.
作者
杨在宾
邓宸玺
贺海桥
庄佳荣
李洪涛
YANG Zaibin;DENG Chenxi;HE Haiqiao;ZHUANG Jiarong;LI Hongtao(College of Animal Science and Technology,Shandong Agricultural University,Shandong Taian 271018,China;Department of Animal Science and Technology,Jiangxi Biotech Vocational College,Jiangxi Nanchang 330200,China;Guangzhou Bestide Bio-Science and Technology Co.,Ltd.,Guangdong Guangzhou 510450,China;Linyi Backbone Biotechnology Co.,Ltd.,Shandong Linyi 276000,China)
出处
《饲料工业》
北大核心
2025年第24期56-61,共6页
Feed Industry
基金
国家重点研发计划项目[2023YFD1301105]
山东省重点研发计划(重大科技创新工程)项目[2019JZZY020619]。
关键词
纳吐素C
白羽肉鸡
生长性能
屠宰性能
肠道损伤
经济效益
natucin C
white-feather broiler
growth performance
slaughter performance
intestinal injury
economic benefit
