First, breeding background:
Boss Wu of Lianyungang * * * has raised 30 mu of white shrimp in the north and south, and is now in the middle of growth.
Second, the tangkou problem symptoms:
In all ponds raised by Boss Wu, the vitality of shrimps in some ponds decreased, the food intake was low and coarse, and there were swimming and sporadic "stealing death" phenomena. After the shrimp larvae were detected, the bacteria and viruses infected with the shrimp larvae were excluded, and then the water quality was detected. The nitrite seriously exceeded the standard, and the nitrite detection value was 0.3.
III. Guidance procedures:
According to boss Wu's description and information feedback, he made a quick conditioning plan for his tangkou:
First control the feed for 2 days and reduce the feeding amount appropriately.
Day 1: 3 packets of solid peroxide particles +55438+0 bottles +2 packets of polypeptide in the morning;
The next day: 3 packets of solid hydrogen peroxide particles+Jiewuyou 1 bottle +2 packets of polypeptide in the afternoon;
The third day: 2 packets of solid peroxide particles+half a bottle of worry-free solution +2 packets of spores in the afternoon;
Fourth, the effect tracking:
A week later, I paid a return visit to boss Wu. According to boss Wu, the water quality in Tangkou is very refreshing, shrimp seedlings are rejuvenated, feeding is normal, and the death of tourists disappears. We repeatedly stressed to Boss Wu that we should strengthen the transformation of the bottom of the pond in the future to fully ensure the dissolved oxygen at the bottom of the pond to stabilize the water quality.
Cause analysis of verb (abbreviation of verb) problem;
In the late stage of culture, Penaeus vannamei has a high density, a large appetite and a lot of natural defecation, which makes the feces and residual bait at the bottom of the pond increase. In the long run, it is easy to cause insufficient dissolved oxygen at the bottom of the pond, and the probiotics at the bottom can't quickly decompose its residue, which will lead to excessive nitrite at the bottom, and shrimp seedlings will swim and eat and die.
Summary of intransitive verbs:
The living environment of Penaeus vannamei is very important. Penaeus vannamei, which lives in the bottom all the year round, needs stable water quality, and only stable water quality can ensure the healthy growth of shrimp larvae in the later stage. Therefore, we should also do a good job of changing the bottom of the pool frequently. Only by adjusting the dissolved oxygen at the bottom of the pond can we maintain the normal function of probiotics, make the water quality more balanced and stable, be more conducive to the smooth progress in the later stage of culture, reduce the culture cost and improve the culture income.
Jinnannong is a modern animal medicine enterprise built by Nanjing Agricultural University, which integrates production, R&D and sales. The team of experts composed of several professors is committed to the production of R&D and new veterinary drug preparations and the research and development of aquatic animal protection products. At present, it has three national patented products, namely new veterinary drugs and aquatic products "solid hydrogen peroxide", which have achieved great results in fish, shrimp, crayfish, crab and sea cucumber, and are well received by farmers.