动物营养学报2025，Vol.37Issue(3)：1820-1833,14.DOI:10.12418/CJAN2025.154
北京鸭饲料原料的氨基酸标准回肠消化率可加性研究
Additivity of Amino Acid Standardized Ileal Digestibility of Feed Ingredients of Beijing Ducks
摘要
Abstract
This study aimed to investigate the standardized ileal digestibility(SID)and apparent ileal digesti-bility(AID)of amino acids in corn,wheat,sorghum and peanut meal in Beijing ducks at 21 and 42 days of age,and to verify the additivity of amino acid SID in diets composed of these feed ingredients.A double factor completely randomized design was adopted,included tow day of age treatments(21 and 42 days of age)and 6 diet treatments(nitrogen free diet,corn diet,wheat diet,sorghum diet,peanut meal diet and mixed diet).A total of 288 one-day-old Beijing ducks with similar body weight were randomly assigned to 6 groups with 8 rep-licates per group and 6 ducks per replicate.Ducks in each group were fed the experimental diets during 17 to 20 days of age and 38 to 41 days of age for 4 days,respectively.The ileal digesta at 21 and 42 days of age was collected to determine the amino acid and(TiO2)contents in digesta and diets,and calculated the amino acid SID,AID and endogenous amino acid losses(EAAL).The results showed as follows:1)compared with 21 days of age,the endogenous loss amounts of cysteine and proline of Beijing ducks at 42 days of age were sig-nificantly increased(P＜0.05),the endogenous loss amounts of methionine and arginine were significantly de-creased(P＜0.05),and the total amino acid endogenous loss amount was no significant difference(P＞0.05).2)Except for phenylalanine,the amino acid SID of different diets of Beijing ducks at 42 days of age were sig-nificantly lower than those at 42 days of age(P＜0.05).The amino acid SID of sorghum diet was higher than that of other diets.3)In the mixed diet,the measured values of SID of 16 amino acids and total amino acids of Beijing ducks at 21 days of age had no significant difference with the predicted values(P＞0.05),while the measured values of AID of 16 amino acids and total amino acids were significantly higher than those of the pre-dicted values(P＜0.05).In the mixed diet,the measured value of SID of cysteine of Beijing ducks at 42 days of age was significantly lower than that of the predicted value(P＜0.05),while there were no significant differences in other SID of amino acids and total amino acids between measured value and predicted value(P＞0.05);the measured values of AID of cysteine,glutamic acid,isoleucine,histidine,arginine,isoleucine had no significant difference with the predicted values(P＞0.05),while the measured values of AID of other ami-no acids and total amino acids were significantly higher than that of the predicted values(P＜0.05).In summa-ry,the amino acid SID of Beijing ducks at 42 days of age is higher than that at 21 days of age,and the amino acid SID of the mixed diet composed of corn,wheat,sorghum and peanut meal exhibits good additivity in of Beijing ducks at 21 and 42 days of age.[Chinese Journal of Animal Nutrition,2025,37(3):1820-1833]关键词
北京鸭/标准回肠消化率/表观回肠消化率/可加性Key words
Beijing ducks/apparent ileal digestibility/standard ileal digestibility/additivity分类
农业科技引用本文复制引用
袁丹,申仲健,张浩然,包涵,唐静,黄苇,侯水生,谢明..北京鸭饲料原料的氨基酸标准回肠消化率可加性研究[J].动物营养学报,2025,37(3):1820-1833,14.基金项目
十四五国家重点研发计划项目(2021YFD1300404) （2021YFD1300404）
十四五国家水禽产业技术体系建设专项(CARS-42) （CARS-42）
内蒙古自治区科技计划项目(2022YFXZ0009) （2022YFXZ0009）
