Breeding method of new strain of Penaeus monodon resistant to ammonia nitrogen

Abstract

The invention discloses a method for cultivating a new species of Penaeus monodon resistant to ammonia nitrogen, which comprises: the concentration of ammonia nitrogen in the culture water body is divided into several gradient ranges, and the median value of the concentration of ammonia nitrogen in each gradient range is adjusted for the first time from low to high. range to the Nth adjustment range; from the first adjustment range to the Nth adjustment range, the lower limit value gradually increases, and the upper and lower limit difference of each adjustment range gradually increases from the first adjustment range to the Nth adjustment range large; put a number of Penaeus monodon into the breeding pond, and then cultivate them in sequence according to the corresponding periods from the first adjustment range to the Nth adjustment range according to the step range; the ammonia nitrogen concentration of the culture water in the first period a is carried out in the following manner Adjust farming: gradually increase the ammonia nitrogen concentration of the aquaculture water body from the lower limit value of the a-th adjustment range to the upper limit value of the a-th adjustment range, and then gradually decrease the ammonia nitrogen concentration of the aquaculture water body from the upper limit value of the a-th adjustment range to the lower limit of the a+1th adjustment range.

Description

technical field [0001] The invention relates to a technique for cultivating a new species of Penaeus monodon, in particular to a method for cultivating a new species of Penaeus monodon resistant to ammonia nitrogen. Background technique [0002] Penaeus monodon is eurysalinity, can tolerate high temperature and low oxygen, and has weak adaptability to low temperature. Strong disease resistance. The individual is large, the shell is thicker, and the edible ratio is lower than that of Chinese prawns. The meat is delicious and nutritious. The body shell is relatively solid and can withstand being caught by hand. After leaving the water, it has a strong endurance to dry and expose to the air, so it can be sold as a live shrimp. Coastal and estuary beaches that are suitable for the living habits of P. monodon can be used to build ponds to raise shrimp. The water source should be pure and free from industrial pollution. The range of temperature, specific gravity, and pH value s...

AI Technical Summary

Problems solved by technology

Existing studies have shown that ammonia nitrogen has obvious toxic effects on the larvae of Penaeus monodon, and the high concentration of ammonia nitrogen in the water environment often leads to the blockage of ammonia excretion in the gill tissue of Penaeus monodon and the increase of oxygen consumption, hemolymph protein and blood levels. A series of physiological responses to ammonia poisoning, such as a significant decrease in the concentration of cyanocyanin, a significant decrease in immune activity and disease resistance to WSSV, and the blood ammonia content increased with the prolongation of the ammonia nitrogen challenge time and caused explosive death

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