Slow growth of crayfish larvae in early spring?In this way, it will take very short time to reach the stocking specifications
Every farmer who raises crayfish on his own, and sells them by breeding them, has struggled to find a way to make them grow faster.The hope is that by March, more young crayfish can meet the standards of transfer to the pond.I also have more than 30 acres of seedlings pond, in addition to their own breeding, in the past march to April, but also sell a lot of shrimp seedlings for others to breed.Below I according to their own practical experience, to share with you, in early spring, I am using what kind of operation method to promote the rapid growth of crayfish seedlings?In early spring, the outside air temperature is usually very low, and the climate is extremely unstable, the water temperature in our nursery pond is not too high naturally, the water temperature will have certain ups and downs.Many friends know that water temperature is one of the most critical factors to determine the growth of shrimp seedlings in early spring. Usually, when the water temperature is higher than 5 degrees Celsius, crayfish seedlings will start to move and look for food.At this time, however, the young crayfish have a narrow range and need very little food.Feed, not only to feed particle diameter, as well as the quality of strict screening, but also on the daily feed amount control.General body length of about 2-3 cm shrimp seedlings, should choose to feed the feed particle diameter of 1 mm, feed protein requirements of more than 34%.When the water temperature is below 10 degrees Celsius, one mu of water, feeding quantity is not more than 0.5 kg, feeding too much, not only easy to cause the waste of feed, but also will cause the later water quality deterioration, increase our future control of breeding environment investment costs.The method of casting feed is, casting feed all around the ridge of raising seedling pond, and casting feed once every other day can.When the outside temperature reaches between 10 and 15 degrees Celsius in the evening, the amount of feed should be doubled.At this time, the activity of crayfish seedlings is enhanced, and the range of activity is wide. Many shrimp seedlings will go to the middle of the nursery pond for activities. Therefore, when feeding, the middle of the larger nursery pond should be properly cast.Feeding frequency is once per day.With the individual growth of crayfish fry, and the rising temperature of the outside world, the daily feed demand of shrimp fry is also much higher than before.At this point, the daily amount of feeding, a mu of water about need to feed about three catty.When the individual shrimp seedlings reach more than three centimeters, can be changed to the grain diameter of two millimeters of high protein quality special feed.It is worth noting that there may be a great difference in the number of crayfish seedlings in each pond. After feeding, it is best to carefully observe the feeding situation of crayfish seedlings, so as to increase and decrease the feed amount every day in time.In addition, when we raise and manage crayfish seedlings in spring, we must pay attention to the management of fertilizer and water, water and grass, as well as flexible control of the water level of the nursery pond.The specific operation method has been introduced in the video and pictures not long ago. I will not describe it here. If you do not know the friends, you can go to my homepage to view the relevant content.As long as we regulate the ecological environment of aquaculture pond, and can according to the change of the weather, about the number of pond shrimp seedlings, flexibly grasp the amount of feed, and use the correct method of feed, crayfish seedlings in early spring is able to grow faster.Most of them can reach the standard of pond stocking in March.Pay attention to “Huai ‘an Old Chen”, let you raise crayfish from now on more smoothly!Author statement: part of the distribution map from the network, involving infringement please contact delete!