上海农业学报2024，Vol.40Issue(3)：73-78,6.DOI:10.15955/j.issn1000-3924.2024.03.12
新杨黑羽蛋鸡消化器官生长发育规律研究
Growth and development patterns of Xinyang black-feathered laying hens'digestive organs
摘要
Abstract
In order to improve the production performance of Xinyang black-feathered laying hens,the growth and development patterns of Xinyang black-feathered laying hens'digestive organs during the brooding period(1-6 weeks old),breeding period(7-18 weeks old)and laying period(19-80 weeks old)were studied.Five hundred one-day-old hens were selected as a test group.Sixty hens were randomly selected for weighting every week,and hens were dissected to measure their body weight,immune organ weight,digestive organ weight,and digestive tract length respectively.Ten hens aged 1-33 weeks were randomly dissected every week,and 50,14,20 and 36 hens were dissected at 45,47,55 and 80 weeks of age.The results showed that the rapid growth period of muscular stomach and proventriculus of Xinyang black-feathered laying hens was before 9 weeks of age and complete development was around 13 weeks of age.The rapid growth period of the intestine was before 8 weeks of age,and it rapidly grew again at 21-24 weeks of age,with a stable trend at 24 weeks of age.The optimal growth curve model of intestine was Bertalanffy,with a growth inflection point around 4 weeks of age.The optimal growth curve model for muscular stomach was Gompertz.The body weight was significantly correlated with the liver weight、proventriculus weight and intestinal length(P＜0.01);The proventriculus weight had a very significant correlation with the liver weight(P＜0.01),and significant correlation with the jejunum length and the duodenum length(P＜0.05);The muscular stomach was not significantly correlated with other organs(P＞0.05).关键词
新杨黑羽蛋鸡/消化器官/生长发育/最适模型Key words
Xinyang black-feathered laying hens/Digestive organ/Growth and development/Optimal model分类
农业科技引用本文复制引用
李红,颜瑶,姚俊峰,王晓亮,蔡霞,严华祥..新杨黑羽蛋鸡消化器官生长发育规律研究[J].上海农业学报,2024,40(3):73-78,6.基金项目
山东省重大科技创新工程项目(2019JZZY020611) （2019JZZY020611）
国家现代农业产业技术体系(CARS-40) （CARS-40）
上海市农业科学院卓越团队建设项目[沪农科卓(2022)021] （2022）
国家级星火计划(2015GA68002) （2015GA68002）
