关键词: 肉用鸡[49ME], 益生素, 小肠粘膜, 上皮细胞, 肝细胞, 超微结构

Abstract: A probiotics get from Sichuan Angricultrual University was fed to the broilers. The broilers were killed at the age of 8 weeks. The epithelial cells of small intestinal mucosa and hepatic cells were sampled for transmission electron microscope observation. Compared with the controls, it was found that the cavaties of rough endoplasmic reticula were enlarged, the number of which was increased, and encircled mitochondrons closely. The quantities of smooth endoplasmic reticula and the Golgi bodies were increased. The microvilli on the epithelial cells of small intestinal mucosa were longer. Much microvilli of the epitheliel cells of small intestinal mucosa inserted into hepatic sirusoids, and much vibosomes gathered there. It was concluded from above that the improvement of broiler performances owing the the probiotics were probably related to that the probiotics accelerated the synthetic metabolism of protein and fat in cells, and improved the absorption of small intestinal mucosa.

Key words: BROILERS, PROBIOTIES, SMALL INTESTINAL MUCOSA, EPITHELIAL CELL, HEPATIC CELL, UITRAMICRE STRUCTURE