利用套算法和强饲法评定籽粒苋茎叶粉肉鸡表观代谢能  

Apparent Metabolizable Energy of Amaranthus hypochondriacus Stem and Leaf Powder in Broilers Evaluated by Substitution Method and ForceFeeding Method

作　　者：李延涛 周世龙 王琰 张晨 任莹[1] LI Yantao;ZHOU Shilong;WANG Yan;ZHANG Chen;REN Ying(Hubei Key Laboratory of Animal Nutrition and Feed Science,Wuhan Polytechnic University,Wuhan 430023,China)

机构地区：[1]武汉轻工大学,动物营养与饲料科学湖北省重点实验室,武汉430023

出　　处：《动物营养学报》2024年第3期2022-2030,共9页CHINESE JOURNAL OF ANIMAL NUTRITION

摘　　要：本试验旨在利用套算法和强饲法评定籽粒苋茎叶粉肉鸡表观代谢能(AME)。套算法试验选用1日龄健康的罗斯308白羽肉鸡144只,随机分为3组,每组6个重复,每个重复8只鸡。代谢试验分为2个阶段:19~21日龄和40~42日龄。代谢试验期间,对照组100%饲喂基础饲粮,30%替代组饲喂70%基础饲粮+30%籽粒苋茎叶粉,50%替代组饲喂50%基础饲粮+50%籽粒苋茎叶粉。分别用全收粪法和指示剂法测定籽粒苋茎叶粉AME。强饲法试验选用42日龄健康的罗斯308白羽肉鸡10只,随机分为5个重复,每个重复2只鸡。试验鸡强饲籽粒苋茎叶粉,按照48 h排空-强饲-48 h收集排泄物的程序进行。结果表明:1)对比不同方法测定的籽粒苋茎叶粉AME发现,强饲法测定的籽粒苋茎叶粉AME显著低于套算法(P<0.05),全收粪法和指示剂法测定的籽粒苋茎叶粉AME无显著差异(P>0.05)。2)套算法中30%替代比例与50%替代比例测定的籽粒苋茎叶粉AME无显著差异(P>0.05),但30%替代比例测定的籽粒苋茎叶粉AME高于50%替代比例。由此可知,本试验条件下,建议使用套算法中的指示剂法测定籽粒苋茎叶粉肉鸡AME,适宜替代比例为30%,在此条件下测得19~21日龄肉鸡籽粒苋茎叶粉AME为3.65 MJ/kg,40~42日龄肉鸡籽粒苋茎叶粉AME为3.77 MJ/kg。The aim of this experiment was to evaluate the apparent metabolizable energy(AME)of Amaranthus hypochondriacus stem and leaf powder in broilers by using the substitution method and forcefeeding method.In the substitution method test,a total of 144 healthy 1dayold Ross 308 white broilers were randomly divided into 3 groups with 6 replicates per group and 8 chickens per replicate.The metabolism test was divided into two stages:19 to 21 days of age and 40 to 42 days of age.During the metabolism test,the control group was fed the 100%basal diet,the 30%substitute group was fed 70%basal diet+30%Amaranthus hypochondriacus stem and leaf powder,and the 50%substitute group was fed 50%basal diet+50%Amaranthus hypochondriacus stem and leaf powder.The AME of Amaranthus hypochondriacus stem and leaf powder was determined by total collect method and indicator method,respectively.In the forcefeeding test,ten healthy 42dayold Ross 308 white broilers were randomly divided into 5 replicates with 2 chickens per replicate.The broilers were forcedfed Amaranthus hypochondriacus stem and leaf powder,respectively,and were subjected to the procedure of emptying for 48 h,forcedfeeding for 48 h and collecting excreta.The results showed as follows:1)compared the AME of Amaranthus hypochondriacus stem and leaf powder measured by different methods,the AME of Amaranthus hypochondriacus stem and leaf powder measured by the forcefeeding method was significantly lower than that by the substitution method(P<0.05),and there was no significant difference in AME of Amaranthus hypochondriacus stem and leaf powder between total collect method and indicator method(P>0.05).2)There was no significant difference in AME of Amaranthus hypochondriacus stem and leaf powder between 30%substitution ratio and 50%substitution ratio(P>0.05),but the AME of Amaranthus hypochondriacus stem and leaf powder of 30%substitution ratio was higher than that of 50%substitution ratio.In conclusion,under the conditions of this test,it is suggested to use the indicator method in

关 键 词：籽粒苋茎叶粉 表观代谢能 套算法 强饲法 肉鸡 

分 类 号：S816.15[农业科学—饲料科学]