现代畜牧兽医Issue(2)：36-40,5.DOI:10.20154/j.cnki.issn1672-9692.2025.02.008
饲养方式对大骨鸡肠道乙酸含量及小肠黏膜形态的影响
Effect of feeding pattern on the acetic acid content and mucosa morphology in the intestines of Dagu chickens
摘要
Abstract
The experiment aimed to explore the effects of rearing methods on the digestive and absorptive performance of Dagu chickens.A total of 500 one-day-old Dagu chickens were selected for online rearing and free feeding.At 30 days of age,48 chickens with similar body weight were randomly divided into two groups(half male and half female in each group,with no significant difference in initial weight),24 of which were set as free-range group.Another 24 animals were raised in a single cage as a cage group.The experiment lasted for 94 days.The results showed that compared with the caged Dagu chickens,the acetic acid content in the cecum and duodenal chyme of the free-range Dagu chickens at 85 days of age showed an upward trend,but the difference was not significant(P>0.05),at 124 days of age,the acetic acid content in the cecum and duodenal chyme of the free-range Dagu chickens significantly increased(P<0.05).Compared with the caged Dagu chickens,the villus height and villus surface area at the 1 cm segment of the anterior end of the duodenum of the free-range Dagu chickens at both 85 and 124 days of age significantly improved(P<0.05),and the villus width also showed an increasing trend(P>0.05).The villi of the duodenum in the free-range group of Dagu chickens were cylindrical,regularly arranged,proportionally coordinated,and evenly distributed in height,with furrow-like folds visible on the villus surface and no signs of damage.In the caged group of Dagu chickens,the villi of the duodenum were underdeveloped,irregularly arranged,and some villi were curled and accompanied by shedding.The study indicates that the free-range mode is conducive to increasing the acetic acid content in the intestine of Dagu chickens,improving the morphology of the intestinal mucosa,and promoting the digestion and absorption of nutrients.关键词
饲养方式/大骨鸡/小肠黏膜形态/消化吸收性能Key words
Feeding pattern/Dagu chickens/Morphology of small intestinal mucosa/Volatile fatty acids分类
农业科技引用本文复制引用
李鑫,苏玉虹,田玉民,周大勇,周洪彬,廖阳,史东辉,王佳丽..饲养方式对大骨鸡肠道乙酸含量及小肠黏膜形态的影响[J].现代畜牧兽医,2025,(2):36-40,5.基金项目
辽宁省教育厅基本科研项目(LJKFZ20220246) （LJKFZ20220246）
辽宁省种质创新藏粮于技专项(2023020531-JH1/102-05) （2023020531-JH1/102-05）
辽宁省科技攻关项目(2021JH1/10400033) （2021JH1/10400033）
锦州医科大学2024年大学生创新训练项目(202410160006、X202410160075) （202410160006、X202410160075）
锦州医科大学2024年大学生创业实践项目(X202410160005S) （X202410160005S）
