At present, the estimate is based on 120 kg shrimp per mu, and the number of female shrimps born per mu per year is: 120 kg/mu× 20 shrimps/kg = 2,400 shrimps/mu.
1 140 shrimps/mu× 200 shrimps/times× 2 times/year = 456,000 shrimps/mu × year. The survival rate from spawning to adult shrimp is 8% to 30%. Based on the minimum 8%, the total annual output of adult shrimp is 456,000 shrimps/year× 8.
It can be put on the market after spawning for 2-3 months. The weight of each adult shrimp is 50g (about 10/kg), and the total annual output per mu is 36,480/mu/year12/kg = 3,040 kg/mu/year.
The annual gross profit per mu is: 3040 kg× 8 yuan/kg = 24,320 yuan/mu, net profit = 24,320 yuan-seed purchase cost (120 kg× 48 yuan) 5,760 yuan =18,560 yuan/mu.
Extended data
pay attention to
Shrimp ponds don't need to be too big, usually 5- 10 mu, and there are breeding defects if they are too big or too small. The water storage height shall be kept between1—1.5m, which can be adjusted at any time according to the different needs of each stage; The sludge at the bottom of the pond must be removed. The aged sludge generally contains high ammonia nitrogen and nitrite nitrogen, which is harmful to the growth of fish and shrimp, and the sludge is too thick to work.
There must be sufficient and stable water source, and the pond must not leak, and the convenience of water intake and drainage should be considered. In addition, the most important thing is that there must be no hypoxia in the pond. According to the size and density of the pond, compared with the aerator, the aerator is a very good oxygen supply method.