Ultrastructure of the gastro intestinal tract of healthy Japanese quail(Coturnix japonica) using light and scanning electron microscopy

The Japanese quail(Coturnix japonica) are popular both as an alternative protein source and as a model of choice for scientific research in several disciplines. There is limited published information on the histological features of the intestinal tract of Japanese quail. The only comprehensive reference is a book published in 1969. This study aims to fill that niche by providing a reference of general histological features of the Japanese quail, covering all the main sections of the intestinal tract. Both light and scanning electron microscope(SEM) images are presented. Results showed that the Japanese quail intestinal tract is very similar to that of the chicken with the exception of the luminal koilin membrane of the gizzard. Scanning electron microscopic photomicrographs show that in the Japanese quail koilin vertical rods are tightly packed together in a uniform manner making a carpet-like appearance. This differs in chicken where the conformations of vertical rods are arranged in clusters.

蛋用鹌鹑黄羽系选育研究

对神丹公司蛋用鹌鹑黄羽系采用全同胞家系方法选育了4个世代,结果显示,开产日龄为45 d,比零世代提前4～5 d;开产体重降低20%,每只为110 g;平均蛋重每枚达到11.1 g,20周龄产蛋数达到85.6枚,比零世代每只提高15.6枚;开产至20周龄的平均产蛋率达到90%。

Ghrelin在成年中国黄羽鹌鹑消化道中的定位

为探讨Ghrelin免疫反应阳性细胞在成年中国黄羽鹌鹑(Coturnix japonica)消化道的分布规律及形态学特点。应用免疫组织化学SABC法对成年中国黄羽鹌鹑消化道各段Ghrelin阳性细胞进行定位和形态学研究;利用SPSS 17.0软件,对所得数据进行单因素Dunnett多重比较分析。结果显示,Ghrelin阳性细胞在成年中国黄羽鹌鹑腺胃、十二指肠、空肠、回肠和盲肠均有分布,其中在腺胃分布密度最高,为30.70±6.50,盲肠最低,为1.70±1.56,分布密度从腺胃至盲肠呈逐渐降低的趋势。Ghrelin阳性细胞主要分布于腺胃腺叶细胞、肠道黏膜上皮细胞、肠腺上皮细胞和肠固有层之间,细胞形态多为球形、长柱状和三角形。上述结果说明,Ghrelin阳性细胞在成年中国黄羽鹌鹑消化道分布广泛,根据其细胞形态推测中国黄羽鹌鹑消化道Ghrelin阳性细胞可能具有内分泌和外分泌功能。