论文部分内容阅读
鲤鱼在鱼类养殖生产中是一种较为理想的养殖品种,搞好鲤鱼的繁殖工作,对提高鱼产量极为重要。(一)亲鱼的选择和培育亲鱼的选择标准应以体质健壮,成长快,年龄适当为主。母亲鱼一般以4～8龄,体重2～5公斤较好。公亲鱼以3～6龄,体重1～3公斤为宜。亲鲤在非生殖季节,公母鱼的特征不太明显;但在生殖期,就较易区别,其特征如下表:
Carp is a kind of ideal breeding species in the production of fish breeding. To improve carp breeding work is very important to increase fish production. (A) The choice of broodstock and the selection criteria for broodstock should be based on strong physique, fast growth and proper age. Mother fish generally 4 to 8 years old, weighing 2 to 5 kg better. Male brood fish to 3 to 6 years old, weighing 1 to 3 kg is appropriate. Common carp in non-reproductive season, the characteristics of male and female fish is not obvious; but in the reproductive period, it is easier to distinguish the characteristics of the following table: