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甲鱼雄性的比雌性的销路好,同时售价也高,其原由是:雄甲鱼的滋补、营养价值大;且在人工养殖条件下,雄甲鱼的生长发育速度明显高于雌甲鱼;在抗病力、成活率,料肉比等方面也均优于雌甲鱼。因此,近几年来,世界各国的水产养殖专家们,把如何繁殖雄甲鱼列为重点科研项目。研究试验证明:甲鱼的性别是由孵化期间的温度促成的,它没有性染色体,或者说它们
Turtle male than female sales, and the price is also high, the reason is: tilapia nourishing, nutritional value; and in artificial breeding conditions, the growth and development of the male turtle was significantly higher than the female turtle; disease resistance Strength, survival rate, feed ratio, etc. are also better than female turtles. Therefore, in recent years, aquaculture experts from all over the world have listed how to breed maternal turtles as a key scientific research project. Studies have shown that: the sex of turtles is contributed by the temperature during hatching, it has no sex chromosomes, or that they