畜牧兽医学报2023，Vol.54Issue(12)：5091-5100,10.DOI:10.11843/j.issn.0366-6964.2023.12.019
腐殖酸钠对白羽肉鸡营养物质表观消化率、粪便微生物及其代谢产物的影响
Effects of Sodium Humate on Nutrient Apparent Digestibility,Fecal Microorganisms and Their Metabolites in White-feathered Broilers
摘要
Abstract
The objective of the study was to investigate the effects of dietary supplementation with sodium humate on nutrient apparent digestibility,fecal microbial population and their metabolites in broilers.A total of 540 one-day-old 817 white-feathered broilers were selected for the trial and randomly divided into 3 groups(6 replicates per group,30 birds per replicate).The control group was fed the basal diet and the test group was fed the test diets containing 0.3％and 0.5％sodium humate,respectively.The trial lasted for 42 days,and 3 days before the end of the trial,2 broilers with similar body weight were selected from each replicate and were put into metabolic cages for metabolic tests.The results showed that:1)Compared with the control group,dietary supplementation of 0.5％sodium humate significantly increased apparent digestibility of crude protein,phosphorus and ash(P＜0.05)in broilers.2)Compared with the control and 0.3％groups,dietary supplementation with 0.5％sodium humate significantly increased total bacteria and Lactobacillus concentrations(P＜0.05)and decreased Escherichia coli concentrations(P＜0.05)in broiler manure.Compared with the 0.3％group,dietary supplementation with 0.5％sodium humate significantly increased Prevotella concentration(P＜0.05)in broiler manure.3)Compared with the control group,dietary supplementation with 0.5％sodium humate signifi-cantly decreased ammoniacal nitrogen concentrations(P＜0.05)and increased lactic acid concen-trations(P＜0.05)in broiler manure.Compared with the control and 0.3％groups,dietary sup-plementation with 0.5％sodium humate significantly decreased p-cresol concentrations(P＜0.05)in broiler manure.4)Compared with the control and 0.3％groups,dietary supplementa-tion with 0.5％sodium humate significantly decreased tyramine,spermidine,spermidine and to-tal amines concentrations(P＜0.05)in broiler manure.Compared with the control group,dieta-ry supplementation with 0.3％and 0.5％sodium humate significantly decreased putrescine con-centrations(P＜0.05)in broiler manure;Additionally,dietary supplementation with 0.3％sodium humate significantly decreased tyramine and spermine concentrations(P＜0.05)in broiler manure.Therefore,dietary supplementation with sodium humate can improve nutrient apparent digestibility in broilers,promote beneficial bacteria growth and reproduction,increase lactic acid concentrations,inhib-ite harmful bacteria growth and reproduction,and then decrease ammonia nitrogen,p-cresol and biogenic amines and other odorous substances in manure,thus achieve the goal of pollution source reduction,and under the current condition,supplementation with 0.5％was more effective than 0.3％.关键词
肉鸡/腐殖酸钠/表观消化率/粪便/微生物/生物胺Key words
broiler/sodium humate/apparent digestibility/manure/microorganisms/biogenic amines分类
农业科技引用本文复制引用
李贞明,余苗,唐延天,李袁飞,刘志昌,容庭,马现永..腐殖酸钠对白羽肉鸡营养物质表观消化率、粪便微生物及其代谢产物的影响[J].畜牧兽医学报,2023,54(12):5091-5100,10.基金项目
清远市科技计划项目(2022KJJH062) （2022KJJH062）
饲料产业技术体系创新团队建设项目(2022KJ115) （2022KJ115）
科技创新战略专项资金(高水平农科院建设)—杰出人才(R2020PY-JC001) （高水平农科院建设）
广东省农科院人才引进项目(优秀博士)(R2020YJ-YB2002) （优秀博士）
江门市科技计划项目(2021660200370006997) （2021660200370006997）
清远市科技计划项目(2021DZX018) （2021DZX018）
茂名实验室科研启动项目(2021TDQD002) （2021TDQD002）
广东省农业科学院学科团队建设项目(202118TD) （202118TD）
清远市清城区清远鸡产业园项目(GDSCYY2018-032) （GDSCYY2018-032）
广东省重点领域研发计划项目(2020B020225005) （2020B020225005）
