The rapid development of the California perch farming industry, the increase in the number of new breeding and re-breeding, brings certain pressure to the nursery, in many cases to achieve the situation of "one seedling is difficult to find", and the California perch seed survival rate is low, and a series of diseases after the fry enter the pond, which has become an obstacle to the development of California perch farming.
Mature body disease is the biggest factor affecting the survival rate of California perch fry, once it occurs to a large extent, it will lead to the total destruction of fish fry, which is a very headache for the breeding boss, is there really no way to solve the problem of mature body? Let's talk today!
California perch is ripe
The causes of mature body disease, many scientific research units have carried out a long and large number of studies, and found that the pathogens in the sick fish body, such as bullet virus, iridescent virus, columnar xanthobacterium, etc. will even sometimes detect ring worms, etc., so the familiar pathogens are various, showing a mixed feeling. However, cooked body disease generally occurs in the transfer stage, the first stage is also enteritis, after defecation will develop to mature body, so the cause of mature body is also after intestinal damage, not repaired in time, causing physical failure, resistance decline, and eventually infected with a variety of pathogens leading to the onset of the disease.
Analysis of the etiology of mature body disease
1. The disease enters from the mouth
Stagnant water spiders, red worms, ice fresh, etc. have not been strictly sterilized, and may carry pathogens and toxins, causing damage to the liver and intestines of fry.
2. Feed too full.
The development of the liver and intestines is not perfect, the digestive function is weak, and the liver and intestines are damaged by over-feeding, and metabolic disorders occur.
3. Frequent stress
Due to the weather, water quality, screening, etc., it will cause strong stress to the fragile seedlings, which in turn will lead to poor physique.
4. Pathogen attack
With the rise of temperature, pathogens such as parasites and columnar xanthobacteria multiply rapidly, and fish are vulnerable to invasion by pathogens when they are weak.
Prevention and control plan for familiar diseases
Once the familiar body occurs, it can be said that there is no cure, so the key measures for the mature body disease are prevention and control!
1, improve the breeding environment: it is recommended that the boss regularly change the bottom, transfer water, replenish bacteria, to create a good breeding environment for fish fry, and good water quality, clean substrate will also be conducive to the reproduction of beneficial bacteria, algae, reduce the propagation rate of parasites and other pathogens.
2, reduce the density of pathogens: regular use of mild disinfectants, compound iodine, 50% persulfide, Lechang eucalyptus essential oil and other control of pathogen overbreeding, it is recommended to use up chemical disinfectants, timely supplement probiotics.
3. Enhance their own physique: fish fry with good physique, low pathogen invasion rate and strong resistance. The flies bite the slitted egg first! Therefore, it is recommended that the breeding boss regularly take Longchang bile acid, happiness 100 with multi-dimensional, probiotics, liver protection and intestinal protection, and strong body anti-stress. Greatly reduce the probability of mature body disease, even if the mature body occurs, the proportion of loss is not high.
The article is transferred from the "California Perch Frontier" WeChat public account.
