How to distinguish between high-quality lobster seedlings and poor-quality lobster seedlings?

After all the measures in the pond have been done, we should begin to prepare for the release of crayfish, and the quality of lobster seedlings is a key factor in lobster yield. So what kind of shrimp seedlings are high-quality shrimp seedlings? Next, let's take a look at the characteristics of high-quality shrimp seedlings, so that everyone can tell the difference between high-quality shrimp seedlings and non-high-quality shrimp seedlings.

1. Look at the color

In the early stage of good shrimp seedlings, it is best to have green-shell shrimp, the less red shrimp, the better, the good crayfish seedlings are bright and shiny, and the population pigments are the same, and the poor crayfish seedlings tend to be dim, and the population pigments are different. the faster the growth rate of crayfish, temperature, energy, calcium three factors to meet the growth conditions, crayfish will be rapid shelling and growth.

2. Look at the region

After several generations of reproduction, the problem of self-breeding crayfish in this area is the disadvantages of parental degradation and high genetic incidence of disease, so, if possible, it is best to combine local and off-site seedlings, and at the same time reduce the risk of shrimp fry. As the saying goes, eggs can not be put into the same basket, hoping to reduce the probability of disease outbreak.

3. Look at the shrimp shell

During the seedling period, soft-shell shrimp seedlings are more common, and the survival rate of this kind of shrimp seedlings is generally not high, so it is best to choose hard-shell shrimp seedlings, which shows that shrimp seedlings are rich in nutrition, good growth vitality and high survival rate when put into the pond.

4. Look at the group specifications

A good shrimp seedling has a neat specification, a strong body, a smooth surface without mud, a clean floor, a lively swim and a quick response. The size of the shrimp seedlings of poor quality is uneven, the individual is thin, and some of the bodies are stained with sludge, and some of the differences in size may not be mixed with the same batch of shrimp seedlings, so try to buy larger specifications and higher survival rates. if you buy shrimp seedlings of different sizes in the case of insufficient bait, attack small shrimp seedlings with large volume.

5. Look at the cheek

Can not choose black cheek, shell shrimp, over-aged prawns.

6. Look at the intestines and liver

The intestines and liver of high-quality shrimp seedlings should be better. There are no segmented intestines, uneven thickness, jejunum, thin shit and other conditions. The closer the liver is, the better.

7. Price

Wild crayfish seedlings are cheap and small in size, but they are often undernourished and weak, and the size of wild crayfish is smaller than that of freshwater crayfish. The survival rate is low.

8. Transportation time

Transportation time, this topic is actually not appropriate here, because the transportation time does not have much to do with high-quality shrimp seedlings, because the transportation time affects the survival rate of high-quality shrimp seedlings, so, I hope you had better shorten the transportation time of shrimp seedlings, the more appropriate time is less than 2 hours, the longest time had better not exceed 4 hours, the longer the transportation time, the more serious the problem of dehydration of crayfish seedlings. The more severe the stress reaction is when you put it in the pond.