In recent years, as consumers have become more and more popular with crayfish, Xiaoli Lobsters are also loved by more breeding friends in breeding varieties. Even many breeding friends use crayfish as the first choice, hoping to take the crayfish to get rich. However, with the seedlings in the early March and early April, many breeding friends responded to this bus that it was a bit difficult, because many breeding friends found that the seedlings they put down some time ago were very high, and even died. why?
1.Seedling problems
Why do I put the seedlings of seedlings first, because I think this is the most important reason. I do n’t explain the importance of seedlings. I think everyone understands, and I say that I have seen Miao three points. But what does the crayfish “not necessarily three points to see seedlings”?
1.1Transport distance
Do you pay attention to such a question? The seedlings in March are scarce, and the local seedlings are difficult to find. So the question comes. Is the so -called local pondee seedlings you get really the local pond mouth seedlings? This problem is really worth investigating. I do n’t know if you have learned about the characteristics of crayfish molting. Crash -shaped molting is different from river crabs that are also popular with breeding friends. First of all, the lobster molting is not so neat for the river crabs. Then there is the short number of days in the early molting of the crayfish. The crayfish molten the shell once every 2-5 days. God, so the seedlings we have taken in the early stage are very short. It is not difficult to find that many crayfish are soft in the crayfish you get. I believe everyone should understand how much such seedlings are, because whether it is river crab or crayfish is the most vulnerable in their molting period.
1.2 Seedlings quality
The constitution of the seedlings means not to get the diseased seedlings and do not get malnutrition seedlings. After two or three years of breeding, the sludge of ponds and harmful bacteria have been increasing and the management of winter and early spring is not in place. Therefore, many ponds may be sick or malnourished. This requires us to distinguish more when taking the seedlings, and to distinguish from the appearance and interior of the lobster. See if there is any bubbles at the tail of the tail, whether there is a bubbles that lack arms and legs, and then see if there is a problem with the internal gills, liver, and muscles, whether the gill hair is black, and the liver white muscle white turbidity and other problems. If there are too much shrimp in the seedlings, this kind of shrimp seedlings are absolutely unnecessary.
1.3 seedlings size
Due to the unique molting cycle of crayfish, if the smaller seedlings we choose, the greater the reaction of the stress problem of transportation, the lower the survival rate. And relatively speaking, the smaller the seedlings are, the lower the seedlings. The smaller the survival rate of the seedlings that are smaller in early spring are relatively lower than the larger seedlings. Therefore, when we chose the seedlings in the early stage, we chose the larger seedlings as much as possible. I personally think that the seedlings of 70-80 pounds are relatively cost-effective.
In general, for the seedlings, we try to choose the nearest principle to choose the well -sized physique.
Post time: Mar-04-2024