肉鸭对糖渣和酱油渣养分利用率评定

doi:10.16431/j.cnki.1671-7236.2024.11.018

摘要/Abstract

摘要： 【目的】试验旨在对糖渣和酱油渣进行营养价值评定，测定其在肉鸭中的营养物质消化率、代谢能和回肠氨基酸消化率。【方法】代谢能及养分消化率采用排空-强饲法测定，共选取24只肉鸭，随机分为糖渣组和酱油渣组，每组12个重复，每重复1只鸭，强饲量为60 g，排空和集粪时间均为48 h，收集肉鸭粪便样品，测定干物质、粗蛋白质、粗脂肪、粗纤维、中性洗涤纤维、酸性洗涤纤维含量和总能。使用无氮饲粮法和回肠末端法测定回肠氨基酸消化率，选取60只肉鸭，随机分为糖渣组、糖渣无氮饲粮组、酱油渣组和酱油渣无氮饲粮组，每组5个重复，每重复3只鸭，适应期3 d后分别饲喂试验饲料，4 h后统一屠宰取回肠内容物，测定氨基酸含量。【结果】糖渣中干物质含量为89.70%、粗蛋白质为21.98%、总能为26.47 MJ/kg；酱油渣中干物质含量为89.53%，粗蛋白质含量为26.65%，总能为24.06 MJ/kg。代谢试验结果表明，糖渣和酱油渣在肉鸭中的表观代谢能分别为18.09和8.59 MJ/kg，干物质消化率分别为57.46%和44.61%，粗脂肪消化率分别为84.88%和84.43%。回肠氨基酸消化率结果显示，糖渣和酱油渣试验中表观回肠消化率最高的是赖氨酸，分别为92.75%和55.60%。【结论】糖渣和酱油渣粗蛋白质含量高，氨基酸含量和组成丰富，肉鸭对粗脂肪和粗蛋白质利用率较高，可以开发作为肉鸭饲料原料应用在生产中。

关键词: 糖渣; 酱油渣; 肉鸭; 氨基酸回肠消化率; 非常规饲料原料

Abstract: 【Objective】 The nutritional value,nutrient digestibility,metabolizable energy,and ileal amino acid digestibility of sugar residue and soy sauce residue were evaluated and determined in meat ducks. 【Method】 Metabolic energy and nutrient digestibility were measured using the empty-force-feeding method.A total of 24 ducks were selected and randomly divided into sugar residue and soy sauce residue groups，with 12 replicates in each group and 1 duck per replicate.The feed weight was 60 g,and the experimental duration for feed withdrawal and collection of manure samples was both 48 hours.Meat duck feces samples were collected to determine the contents of dry matter,crude protein,ether extract,crude fiber,neutral detergent fiber,acid detergent fiber,and total energy.The digestibility of amino acids in the ileum was determined using nitrogen free diet method and terminal ileum method.A total of 60 ducks were randomly divided into the sugar residue,sugar residue N-free diet,soy sauce residue,and soy sauce residue N-free diet groups,with 5 replicates in each group and 3 ducks per replicate.After the adaptation period of 3 days,the experimental feed was fed separately,and after 4 h,the intestinal contents were collected and measured for amino acid content. 【Result】 The dry matter content of sugar residue was 89.70%,the crude protein was 21.98%,and the gross energy was 26.47 MJ/kg.The dry matter content of soy sauce residue was 89.53%,the crude protein was 26.65%,and the gross energy was 24.06 MJ/kg.The metabolic test results showed that the apparent metabolizable energy of sugar residue and soy sauce residue in meat ducks was 18.09 and 8.59 MJ/kg,dry matter digestibility was 57.46% and 44.61%,and ether extract digestibility was 84.88% and 84.43%,respectively.The results of ileal amino acid digestibility showed that the highest apparent ileal digestibility in sugar residue and soy sauce residue was lysine,which were 92.75% and 55.60%,respectively. 【Conclusion】 Sugar residue and soy sauce residue were rich in crude protein and amino acids,and the utilization rate of crude fat and crude protein of meat ducks were obviously high,which could be developed as feed materials for meat ducks.

Key words: sugar residue; soy sauce residue; meat ducks; amino acid ileal digestibility; unconventional feed materials

中图分类号:

S816.2

吴占月, 郭艳红, 庄蕾, 王宁, 鹿震涛, 任雯雯, 徐彤, 王岐蒙, 牛志力, 曹俊婷, 吴永保, 吴森, 闻治国. 肉鸭对糖渣和酱油渣养分利用率评定[J]. 中国畜牧兽医, 2024, 51(11): 4833-4841.

WU Zhanyue, GUO Yanhong, ZHUANG Lei, WANG Ning, LU Zhentao, REN Wenwen, XU Tong, WANG Qimeng, NIU Zhili, CAO Junting, WU Yongbao, WU Sen, WEN Zhiguo. Evaluation of Nutrient Utilization of Sugar Residue and Soy Sauce Residue in Meat Ducks[J]. China Animal Husbandry and Veterinary Medicine, 2024, 51(11): 4833-4841.

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