Studies On The Early Follicles Development Of Lubei White Goat And Histological Structure Of Uterus And Oviduct

The goat in lambing trait is between single-fetus and multi-fetus animals.The study on its reproductive trait is useful for us to further understand animal reproductive physiology theoretically and lay theoretical base for improving the efficiency of animal reproductive rate.The oocytes with high fertilizing capacity and developing competence are required steadly in the research on mammalian cloning as well as in vitro embryonic production. Now, it is a hotspot in the biology of animal reproduction to exploite a large number of primordial follicles of livestock in ovary. The objects of experiment aimed at research on the primordial follicular resource of livestock, studing the relations between multi-fetus trait and follicular development and providing useful data for further exploiting the primordial follicular resource of livestock. Lubei white goats were used with the fuzz sheep of Northeast as contrast. The ovaries of three-month old goat and uterus and oviduct of sheep were studied in histological structure.The results show as followed: the density of cortes primordial follicles is 17.45?.36/mm in the largest cross section; The primordial and primary follicles take the elliptic shape in cross section. The diameter of long and short axis for both follicles are 19.6 4.00, 15.05 3.18 and 65.06 15.60, 52.12 14.13um respectively; The ZP of goat ovaries appear in the first phase of intermediary follicles. The primordial follicles with multi-oocyte and twin-oocyte antral follicles have been found in three-month old goat. The cilia epithelium of goat and sheep oviduct has a typical 9+2 micro-tubal structure. It was described that the forming course of goat primordial follicle, the division dynamic process of primordial follicles nest, the origin ^ collect^ division and migration of the follicle cell of primordial follicle in sheep ovaries,...