How much an acre of crayfish a year

According to 120kg of shrimp per acre, the amount of 120kg/mu * 22 per acre = 2640 per acre, the ratio of male and female shrimp is 1:1, each 1320. If the loss in transportation is calculated at 5%, the number of female shrimp per mu is 1254. The price per pound of each species of shrimp is 56 yuan, the cost of raising shrimp 120 * 56 yuan = 6720 yuan.

2. Shrimp farming income

The total number of juvenile shrimp produced after one year of lobster farming in one acre is:1254 shrimp/mu*2 times/mu. Year * 200/mu = 501,600/mu. Year. The survival rate of shrimp species from spawning to juvenile shrimp is 8-30%. At the minimum, the total number of adult shrimp per year is 5016,000 * 8% = 40,128/acre. Year. After spawning and feeding for 2-3 months, they can be put on the market for sale. Each adult shrimp weighs about 50g, and the annual production per mu is 40,128 ÷ 10/kg = 4012.8kg/mu. Year. This gross profit per mu is 4012.8 * 10 yuan / kg = 40128 yuan / mu.

3. Profit from shrimp farming

Net profit = gross profit of 40128 yuan - shrimp farming costs 6720 yuan - feed and other costs 2880 yuan = 30528 yuan. Therefore, the theoretical profit value of one acre of shrimp farming is 30528 yuan. If 10 acres of shrimp farming need 1000 yuan/acre. Labor and pond lease year, labor wages 13,000 yuan/year. Acres, 10 acres of shrimp farming revenue is 30528-13000-1000=16528*10=165280 yuan.

4. Shrimp farming precautions

①Choose a good feed. In the selection of special feed for shrimp, give priority to regular manufacturers of high-quality feed, improve feed utilization, to ensure the healthy and rapid growth of shrimp. Later you can cultivate enough biological feed, young shrimp can put fresh feed and specialized feed, and then gradually transition to shrimp-specific feed.

②Reasonable feeding of shrimp is the general principle of feeding a small number of times, neither feeding too much feed waste, nor feeding too little to affect the normal growth of shrimp. At the same time, but also according to the weather conditions to determine the amount of feeding. If the water temperature is lower than 18 degrees or higher than 32 degrees, feed less shrimp. Water temperature between 25-30 degrees, shrimp will grow vigorously, high demand, you can feed more.

③ Maintain good water quality shrimp need good water conditions. Good water quality, shrimp can grow well, less sick. So you need to change the water every 10 days, about 30% each time.