Since the beginning of summer, the early seedling breeding of Macrobrachium rosenbergii has entered its late stage. The amount of shrimp, feeding amount, and oxygen consumption in the pond have increased significantly. The breeding management has entered a key stage. In this process, farmers should pay attention to the following aspects.
First, feed feeding: The daily feeding amount generally accounts for 4-6% of the shrimp's weight in the pool.
The amount of shrimp in the pool (kg) = the survival rate of the stocking * the survival rate / the number of shrimp per kg. If the amount is too large, the feed will be wasted and the water quality will be polluted. Too little will affect the season of sales. Specific adjustments should also be made based on the weather, water quality, and other conditions.
Second, water quality management: With the increase in the amount of feeding, the water quality is often more fat, so it should increase the number of water changes, generally every 5-8 days, changing the water once, changing the amount of water for the pool of water 1/3-1/4, and Every 15-20 days, the whole pool shall be sprinkled with quicklime in an amount of 5-8 kg per mu per metre.
Third, prevent floating head: At present, the amount of shrimp in the macrobrachium aquaculture pond has generally reached 100-150 kilograms, and with the increase of water temperature, oxygen consumption increased substantially, so it should be a good job to prevent floating head work. Every evening after midnight, it is necessary to inspect the pond once every 2 hours. It is found that the floating head immediately flushes and opens the aerator, and each farmer should have oxygen-added powder in case. The decision to open the aerator was: open at noon on sunny days, open in the rainy morning and open at midnight. Specific should also be flexible according to the actual situation.
First, feed feeding: The daily feeding amount generally accounts for 4-6% of the shrimp's weight in the pool.
The amount of shrimp in the pool (kg) = the survival rate of the stocking * the survival rate / the number of shrimp per kg. If the amount is too large, the feed will be wasted and the water quality will be polluted. Too little will affect the season of sales. Specific adjustments should also be made based on the weather, water quality, and other conditions.
Second, water quality management: With the increase in the amount of feeding, the water quality is often more fat, so it should increase the number of water changes, generally every 5-8 days, changing the water once, changing the amount of water for the pool of water 1/3-1/4, and Every 15-20 days, the whole pool shall be sprinkled with quicklime in an amount of 5-8 kg per mu per metre.
Third, prevent floating head: At present, the amount of shrimp in the macrobrachium aquaculture pond has generally reached 100-150 kilograms, and with the increase of water temperature, oxygen consumption increased substantially, so it should be a good job to prevent floating head work. Every evening after midnight, it is necessary to inspect the pond once every 2 hours. It is found that the floating head immediately flushes and opens the aerator, and each farmer should have oxygen-added powder in case. The decision to open the aerator was: open at noon on sunny days, open in the rainy morning and open at midnight. Specific should also be flexible according to the actual situation.
Shenzhen Piofond Technology Co., Ltd. , http://www.szliionbattery.com