The method of induced breeding and hatchery and larval rearing techniques adopted in China has been described in the report of the FAO Fisheries (Aquaculture) Mission to China (FAO Fisheries Technical Paper No. 168). The study group observed some variations and improvements in the technique
2. Rearing of fry and fingerlings
Monoculture is usually practised for rearing fry to fingerlings. The fry are left in the hatchery tanks for three to five days before being transported to nursery ponds of 2-3 mu. The ponds are cleared to eliminate predators and treated to control infections. They are also fertilized a few days prior to stocking, with organic manures such as "tatsao" which is a traditional Chinese combination of different kinds of herbaceous plants, with soya-bean meal or soya-bean curd, and/or rice bran or peanut cake powder.
3. Rearing of fish to marketable size in ponds
More info:
Although the basic fish-culture technology of China is largely based on traditional practices, a number of new innovations and improvements have been adopted. A major breakthrough in modern times is the artificial propagation of the major cultivated species of carp by the administration of hormones in 1958. Although this technique was also independently developed in India at about the same time, it is only in China that it has been possible to bring it down to the farm level on a country-wide basis and make it a common farm practice. Traditional Chinese fish culture was based on larvae and fry collected from the rivers. Hydro-electric and flood control projects implemented after liberation resulted in a drastic reduction in the availability of fry in rivers and hatchery production became a necessity. This, and effective extension work through the "three-in-one" (farmer-technician-party cadre) combination appears to have helped in the farm-level application of artificial propagation
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Answer:
1.Artificial propagation
The method of induced breeding and hatchery and larval rearing techniques adopted in China has been described in the report of the FAO Fisheries (Aquaculture) Mission to China (FAO Fisheries Technical Paper No. 168). The study group observed some variations and improvements in the technique
2. Rearing of fry and fingerlings
Monoculture is usually practised for rearing fry to fingerlings. The fry are left in the hatchery tanks for three to five days before being transported to nursery ponds of 2-3 mu. The ponds are cleared to eliminate predators and treated to control infections. They are also fertilized a few days prior to stocking, with organic manures such as "tatsao" which is a traditional Chinese combination of different kinds of herbaceous plants, with soya-bean meal or soya-bean curd, and/or rice bran or peanut cake powder.
3. Rearing of fish to marketable size in ponds
More info:
Although the basic fish-culture technology of China is largely based on traditional practices, a number of new innovations and improvements have been adopted. A major breakthrough in modern times is the artificial propagation of the major cultivated species of carp by the administration of hormones in 1958. Although this technique was also independently developed in India at about the same time, it is only in China that it has been possible to bring it down to the farm level on a country-wide basis and make it a common farm practice. Traditional Chinese fish culture was based on larvae and fry collected from the rivers. Hydro-electric and flood control projects implemented after liberation resulted in a drastic reduction in the availability of fry in rivers and hatchery production became a necessity. This, and effective extension work through the "three-in-one" (farmer-technician-party cadre) combination appears to have helped in the farm-level application of artificial propagation