文档介绍：carp in captivity
(A) foster mother
(1). Sexual maturity and sexual cycle of the Yangtze river basin (female general 2 age, male of 1 year of above the carp reach sexual maturity. Generally 3 ~ 5 month for the gonads mature and spawning period. After the first phase of the eggs Ⅵ ovarian to absorb degradation in July to the first Ⅱ period, then gradually development to enter the first Ⅳ period in November, and, on the winter period, the second year 3 ~ 4 months, meet appropriate environmental conditions, ovarian it quickly mature soon Ⅳ phase, the first to the first V period. The male sexual maturity (after the first JingChao degradation to reproduce Ⅲ period, 8 to 9 months into the first Ⅳ period, December to the first V period, and this period winter. Laying eggs in the different season all over south laying eggs for 2 ~ 3 month stage; The Yangtze river basin as a 3 ~ 4 month; The Yellow River is 4 ~ 5 month; The northeast region for 5 ~ 6 months. Spawning period sustainable 2 months or monly.
(2). The choice of mother and raising female carp should choose 2 years old, weight more than 1 kg, the male carp slightly small weight for about kilograms. The choice should be body height, mother back thick, healthy body, strong, the figure is good, strong activity without injury. Source of good for breeding in the pond. Kiss fish pond area is general 1 to 3 mu, depth of wate