【摘要】 大鲵人工繁殖子一代雄鲵与野生雄鲵在体重均为3.25kg时,肥满度分别为0.6115和0.5483;在全长均为65cm时,肥满度分别为0.9103和0.7280,因此子代雄鲵比野生雄鲵略显肥短。进行二次催产率试验,野生雄鲵催产率为28.6%～37.5%,1998年子一代雄鲵催产率为75%～80.2%,1999年子一代雄鲵催产率为72.2%,子代比野生代催产率显著高(P<0.05)。在体重相同时,子代雄鲵精液量比野生雄鲵精液量多20%～40%,最大精液量一尾雄鲵可挤30～40mL,精子密度子代比原种稍高,最高密度为(5.52～8.3)×106ind/mL,精子体积占精液的8.0%～13.3%。pH值均为弱酸性或中性(6.4～7.1);精子大小为(170～210)μm×(3.8～4.5)μm。更多还原

【Abstract】 When the respective weight of artificial F1 and original kind of male giant salamander reached 3.25 kg, the fullness was 0.611 5 and 0.548 3. When the total length reached 65 cm, the fullness was respectively 0.910 3 and 0.728 0, so the F male giant salamander was appreciably fatter than original kind. The rate of hormonal induction of male giant salamander was 28.6%-37.5% in the second experiment and 1998 F1 was 75%-80.2% and 1999 F1 was 72.2%. The rate of hormonal induction of F was obviously higher than original kind. At the same weight, the semen of F was 20%-40% more than original. The greatest quantity of semen would reached 30-40 mL per male giant salamander. The density of sperm of F was slightly higher than original kind, and the highest density was (5.52-8.3)×10~6 ind/mL. Sperm volume accounts for 8.0%-13.3% of the semen. The sperm size was (170-210) μm × (3.8-4.5) μm while the pH was weak acidity or neutral(6.4-7.1).更多还原