1, mu dosage: 80 kg/mu× 60 PCs/kg = 4,800 PCs/mu.
2. Male-female ratio per mu: According to the natural male-female ratio, there are generally more females than males.
3. Survival rate: Generally, the survival rate of shrimp species is 95% in transportation and 80% in rearing.
4. The number of pregnant eggs: 200-600 per female shrimp each time, the natural fertilization rate is 80%, the hatching rate is 40%, the survival rate in natural environment is only 10%, and the number of pregnant eggs is 2-3 times a year, which varies according to the natural temperature in different regions.
5. Weight of commercial shrimp: The common individual weight is generally 50- 100g. If the minimum value is taken, the yield per mu is about 400kg. There are many uncertain factors in the yield above (number of female shrimps per mu) (minimum number of spawning per year) (minimum number of eggs conceived per year) (minimum natural survival rate) (minimum individual weight).
If the simulated ecological environment conditions are good and the bait is sufficient, the unit yield will gradually increase. The test results of our company show that the minimum yield is 300kg/ mu and the maximum yield is 500kg/ mu, but the influence of natural disasters and improper human operation on the yield per mu is not ruled out.
6. Output value per mu: 400kg×30 yuan/kg = 12000 yuan/mu.
The above prices refer to the sales price of lobsters in a certain peak season as 30 yuan/kg, and the normal sales of farmers are different from wild fishing. For the late autumn and early winter every year, the off-season price is expected to be higher.
Moreover, it does not include the profit distribution of filter-feeding and herbivorous fish bred in ponds. Generally, mixed culture produces more than 300kg of adult fish per mu, and the average selling price is 6 yuan/kg, so the value-added per mu is more than 1800 yuan, and the output value per mu is more than 1 10,000 yuan.
According to the price of 2 yuan/kg of bran and bran agricultural and sideline products in 2006, the bait coefficient is 2. The raising cost of the yield per mu is 400kg× 2 yuan/kg× 2 =1600 yuan/mu, and the average annual management fee per mu is 500 yuan. The average seedling payment per mu is 80kg× 60 yuan/kg = 4,800 yuan.
The total investment is: 1600+500+4800=6900 yuan. Net profit per mu:12000+1800-6900 = 6900 yuan/mu.
If the lobster is sold out of season by hoarding, the annual price of lobster is between 24-40 yuan/kg in autumn and winter, and the net profit per mu is between1-20,000 yuan. If the water surface of farmers is more than 5 mu, the annual income is more than 50 5- 10/000,000 yuan, and its economic benefit is 10 times that of conventional fish farming.