Effects of Nitrite on Fish and Treatment Methods

2023-11-23

Qingdao Zhongren Animal Medicine Co., Ltd

Zhongren Aquatic Products

Nitrite can promote the hemoglobin in the blood into methemoglobin, methemoglobin can not be combined with oxygen, resulting in a decline in the ability of blood to transport oxygen; methemoglobin makes the blood brown, high nitrite, damage fish gills, liver and other important organs, water dissolved oxygen fish can not use, there will be toxic hypoxia, food deterioration. As long as the water body improves, the symptoms will gradually disappear, but if the water quality is not adjusted in time, the survival rate will be seriously affected, especially in bad weather or virus invasion, which will cause great losses.

Time:2023Year10Month25Day

Location:Gudao Town, Dongying City, Shandong Province

Area:30mu.

breeding varieties:grass carp

actual situation:

The water body is transferred to water, a large number of naked algae are aging and dead, the sub-salt index of the water body is too high, and the sub-salt index exceeds.1.0mg/LAt the same time, the water body is anoxic, the grass carp feed is abnormal, the liver is damaged, and occasionally there are dead fish.

Treatment Scheme:

On the morning of the first day, use clear water to interpret Ann (5LPack) a bucket of whole pool splash to relieve toxicity, in the evening with the use of bottom to change overlord with oxygen tablets to change the bottom oxygen. Soak probiotics and algae with brown sugar in advance in the evening, and sprinkle the whole pool with phosphate fertilizer the next morning. Grass carp gradually eat feed back to normal use liver and gallbladder Kangtai with astragalus polysaccharide, mix80Jin material, for internal administration.

effect analysis:

The water quality index gradually returned to normal, grass carp fed normally, the water quality was stable, and the sub-salt did not rebound.

analysis of the case:As the weather enters autumn, the weather changes greatly, the temperature is unstable, and it is extremely easy to turn water. After turning water, a large number of algae died, resulting in a bad bottom, the bottom of the anoxic conditions, the production of ammonia nitrogen, and gradually from ammonia nitrogen into nitrite. Nitrite can be converted into nitrosamines under certain conditions. When nitrosamines come into contact with liver cells, they are easily converted into nitrosamine metabolites that are toxic to the liver. These metabolites can break down cells and lead to liver cell death. Therefore, in the breeding process, timely change the bottom, supplement the water body beneficial bacteria to transfer water, improve the water environment, and with oral administration, protect the liver and gallbladder.

Key words:

Return to List

Previous:

Overwintering management of freshwater fish

Next:

Regulation of water quality in the later stage of culture