The ingenious use of salt in the prevention and control of diseases in herring culture

Salt has a strong insecticidal and sterilizing effect, and it is a common drug for the prevention and treatment of a variety of fish diseases, especially for the prevention and treatment of fish diseases caused by bacteria, fungi and parasites.

1. Prevention and control of bacterial fish disease: soak more than 3 inch fish in salt water for 10 minutes for 15 minutes, or sprinkle salt throughout the pond with a concentration of 11,22.5 mg / L, a water depth of 1 meter, and salt of 7.5 to 15 kilograms per mu, which can prevent Gill rot and red skin disease of herring. In the formula feed, 2.5% salt can prevent and cure herring enteritis. With the combination of trichlorfon and salt, the effective rate for the prevention of the above three diseases of herring can reach 100%, the early cure rate is more than 90%, and the medium-term cure rate is about 80%. The method is to sprinkle raw lime blocks all over the pond, with an average water depth of 1 meter per mu and 20 kg per mu, and then immediately spray 90% crystal trichlorfon and salt mixture all over the pond with a sprayer that removes the sieve, 0.5 ~ 0.7 mg / L of trichlorfon and 5 mg / L of salt. It can be cured once in the early stage, 2-3 times in the middle stage, once every other day, and prevention, once every 30-50 days. For the prevention and treatment of enteritis, a small amount of the mixture can be sprayed on the green feed in the grass rack, and the effect is better. 2. Prevention and treatment of water mildew disease overwintering fish or adult fish are often injured by manual operation and are easy to suffer from water mildew, which can be cured by soaking in 30% salt water for 10 minutes and 15 minutes. 3. Prevention and control of various parasitic diseases washing summer flower fish species infected with parasitic diseases with 3% salt water, all oblique tube worms died in 1 minute, Cryptotrichum Gill all died in 5 minutes, and rotifers, root worms and oral filariasis all died in 10 minutes. If the fish is more than 1 inch, the washing time can be extended appropriately. After washing the parasitic summer flower fish fingerlings with 1.7%-2% salt water for 30 minutes, all the three generations of worms and ring worms died, and all the fish lice fell off. The bubble disease of fish species can be cured by draining 1/3 of the original pool water, then injecting fresh water, and then sprinkling salt water all over the pond with a concentration of 5mg / L.