东北民猪发情排卵期生殖器官的形态学研究

本文指出九月令东北民猪与哈白猪配种与未配种组排卵期生殖器官的形态变化是有差异的。配种组的卵巢、输卵管、子宫角的重量和长度,差异不显著,只有民猪的阴道和阴道前庭稍占优势;而未配种组,卵巢差异不明显,输卵管、子宫角、阴道和道阴前庭,差异就非常显著。所以,虽然哈白猪在配种前生殖器官发育不及民猪,但配种后受交配活动与激素的刺激,发育速度加快,故配种组两种猪生殖器官比较差异不显著。

MORPHOLOGICAL STUDIES ON THE REPRODUCTIVE ORGANS OF THE NORTHEAST NATIVE PIGS DUSING OVULATION

24 9month Native gilts were used for studies, on estrus, trme of ovulation, and the morphology of reproductuve organs, with the same number of Harbin white gilts as controls, The results of measurements were shown as follows: 1. External morphology and various observations of ovaries in the Native and Harbin white pigs were not significantly different. 2.Oviducts of the Native pigs were considered superior to Harbin white macroscopically. Statistical results showed that, the means of all measurements were not significantly different in non-gravid groups, but in mated groups differences Were very significant in many respects. These might meet, that, the Native pigs were better prepared for gestation. 3. Lengths and weights of Corni Uteri in the non-gravid Native pigs were prominent and were considerably different from those in Harbin white, but those in gravid groups were not significantly different. 4. The uterine bodies and cervixes of Native pigs also surpassed in certain respects, differences between breed were very obvious. 5. Comparing the two breeds, the vagina and the vestibula of the Native pigs were predominate in length of vestibla only, difference between the two breeds was notably significant. In short, results of the measurments and morphological observations showed that, the reproductive organs of Native pigs during estrus and ovulation periods were superior to the Harbinwhite. These might be the anatomical basis for high prolificacy. in the Native pigs.