Hello everyone, I am a small editor chasing dreams, how to judge whether shrimp is healthy, I believe that everyone has more or less a little experience. I'll talk about the unpopular ones, and today I'll tell you how to distinguish the health status of shrimp according to the color of the shrimp feet. This article belongs to the original experience of the small editor of the public account of loving shrimp farming, which only represents personal views, such as farmers have different opinions, welcome to leave a message to tell us.
In fact, there are many expert ways to judge the physical condition of shrimp, but for novice farmers, those are too advanced. Then I will teach you a simple and easy way to learn, very convenient, one look will be. That is, according to the different colors of the shrimp feet, to judge the health status of the shrimp.
Yellowing of shrimp feet:
The main symptoms are yellowing or yellowish brown of the appendages, the yellowing of the gill area of the cephalothorax, and the slow swimming of sick shrimp at the edge of the pool, anorexia. The diseased shrimp are less active, swimming slowly on the surface of the water at the edge of the pool, or sinking to the bottom, sometimes swimming in rotation or vertical swimming; slow response to external disturbances; decreased appetite or stopped eating. Individuals are emaciated , with a large gap between the carapace and muscles ; the top of the cephalothorax carapace heart area changes from the original clear color to white.
Cause: Vibrio infection, or dirty bottom of the pond. If you have not found a case of stealing death, you can simply control it by disinfecting and changing the bottom. If there are symptoms of stealing death, in addition to disinfection and bottoming, you should also feed with antibiotic mixtures, which can basically control the symptoms smoothly.
Shrimp feet turn red:
The main symptom is that the shrimp's appendages turn red, or dark red, sometimes with the beard turning red and the body turning red. Shrimp vitality deteriorates, there will be ambush edges, sand climbing symptoms, severe will be a large number of stealing death.
Why: There are several possibilities for this state
One is the lack of oxygen, which is the situation encountered most of the time. Manifested as a single foot red, or red, or two symptoms at the same time, looking at the shore, you will find that there are shrimp with ambush edges, and the serious body will appear subtle dark red, pay attention here, dark red, dark red, because to distinguish the erythrosomea I said below, so special emphasis is placed.
This condition is a symptom of hypoxia, which can be solved by turning on the aerator and usually resolves quickly.
The second is caused by erythrosometosis, shrimp in addition to the shrimp feet become red, but also accompanied by the symptoms of reddening of the body, generally sick shrimp in the pool side of the slow swimming, some in the water downstream up, a downstream down, slow response, no feeding, jejunum and jejunum, usually within a few days will occur a large number of deaths, very difficult to engage.
Erythrosis is divided into bacterial and viral, the previous small article has a detailed description, today's topic is not here, it will not be explained in detail. Differentiated from the hypoxic shrimp feet become red, the color of the shrimp body and shrimp feet with erythrotic disease will be lighter than the hypoxicity, showing a tender pink, this situation, Xiaobian suggests, if the shrimp already has economic value, it will be sold decisively.
This disease is difficult to treat, if there is no economic value, it is fiercely disinfected, or directly sprinkled with florfenicol, after the drug interval of at least three days do not go to feed, if found to get better, then gradually start mixing feeding, mixing garlic powder for a few days. If there is no improvement, it is really difficult to drain the pond as soon as possible, and it is really difficult to engage in erythematism, and it is necessary to be cruel when it is time to avoid causing greater losses.
The shrimp feet are stained black
In fact, this blackening still needs to be double-quoted, because blackening is only one of the developments, but in order to facilitate the distinction of novices, the paragraph title will be blackened. At the beginning of the disease, there are no obvious symptoms on the surface of the shrimp body, but it appears to be slow to move, the response to external stimuli is relatively slow, and the mucus on the surface of the body has a slippery feeling.
By the middle of the disease, the naked eye can already distinguish a small amount of yellow-green or brown villi on the auxiliary limbs and body surface of the diseased shrimp. Wait until the shrimp feet hang a lot of furry black objects, hanging thick attachments around the body, is a serious infection, anatomical observation can see the jejunum, the liver is light yellow or dark brown or patterned, muscles are inelastic, the gills are black, at this time often secondary infection with bacterial diseases.
This situation is a symptom of shrimp infection with the parasite , ciliates , which can be handled very simply, that is, it can be controlled by using a ciliate insecticide specific to shrimp when mild symptoms are first detected. Ciliates usually do not cause a large number of deaths of shrimp, but do not be careless, because the sick shrimp will eventually starve to death, or die of molting, or because of secondary bacterial infection, if the secondary bacterial infection, the mortality rate is very high. So still can not be careless, early detection and early treatment.
Well, today's article teaches to analyze what diseases shrimp have by simply observing the color of shrimp feet, which is the accumulation of personal breeding experience, hoping to help you judge the physical condition of shrimp more simply and conveniently. At the same time, I hope that everyone will continue to pay attention to the love of shrimp farming, pay attention to the small editor, here is the best original technical article, I am chasing dreams, we will see you in the next issue.
Article Source: Love Shrimp Farming (aiyangxia51)