| 摘要: |
| 为了研究固始鸡十二指肠的生长发育规律和组织学特点,应用大体解剖学和组织切片技术,对0～20周龄父母代固始鸡的十二指肠进行了发育形态学研究,并用Logistic方程模型模拟十二指肠质量的生长变化。结果表明,随着周龄的增加,固始鸡十二指肠的长度、质量、周长、绒毛长度、肠腺隐窝深度、肠腺宽度及各肌层厚度均增大;十二指肠相对生长率、十二指肠指数和肠腺密度均呈下降趋势;肠绒毛有分支现象;淋巴组织的发育比较缓慢,到6周龄后才出现有淋巴小结。 |
| 关键词: 固始鸡 十二指肠 发育形态学 Logistic曲线方程 |
| DOI： |
| 分类号: |
| 基金项目:国家“863”计划项目（2002AA242021） |
|
| On the developmental morphology of the duodenum of parental line of Gushi Chickens |
|
|
| Abstract: |
| To study the law of growth and development and histology feature of Gushi chickens,the developmental morphology of the duodenum were observed with the technique of gross anatomy and histological section in the parental line of 0-20-week Gushi chickens.Logistic equations were set up to imitate the varying of the duodenum weight.Results showed that the length,weight,perimeter of the duodenum and intestinal villus length,intestinal glands recessus depth,intestinal gland width and the thickness of layers of muscles in Gushi chickens increased with the week age;relative growth of the duodenum,density of intestinal gland(Gl.intestinal) and the duodenum index varied inversely with the week age;branches were found on the intestinal villus;the lymph tissue developed slowly,lymphonodulus could be observed since 6-week age. |
| Key words: Gushi chickens duodenum developmental morphology logistic equation |
