Key points of feed management and feeding technology for spotted forktail catfish during epidemic prevention

Editor's Note

As the water temperature warms up, the critical period of stocking and spring re-feeding of catfish cultured fry is coming. Due to the sudden outbreak of the epidemic, it may have a certain impact on farmers, but with the precise adjustment of epidemic control and prevention and control measures, as long as farmers are fully prepared, they will be able to survive the difficulties smoothly.

The quality control and feed team of Jiangsu Spotted Catfish Industry Technology System put forward the following points on the current feed management and feeding technology of Spotted Catfish:

1. Feed procurement and preservation management

Feed is the first input of breeding, and it is also an important guarantee for the quality of breeding.

With the implementation of various measures to ensure agricultural production during the epidemic prevention and control period of the Provincial Rural Agriculture Department and the resumption of production and work of feed production enterprises, aquatic feed in various places has been put in place, and the shortage of feed supply in some farms in the early stage has been greatly improved and alleviated.

Since the normal shelf life of catfish feed is only 3 months, the shelf life will be shortened to 1 and a half months in case of hot or wet weather, it is recommended that aquaculture enterprises do not hoard too much feed to avoid feed mold. For long-term storage of feed, even if there is no visible plaque mold mass, there may already be mold growth, and mold destroys the nutrient composition at the same time, but also produces mycotoxins, affecting the growth of spotted catfish. Moreover, even if the long-term storage of feed does not produce mold, its vitamins, antioxidants and other active ingredients will gradually lose inactivation loss during the storage process, affecting the nutrient ratio of feed and the breeding effect.

At the same time, it is recommended that feed manufacturers appropriately increase the amount of antioxidants within the scope allowed by national standards to ensure that feed nutrients are reduced.

The feed that has been purchased in large quantities should be kept in a dry, cool and ventilated place, keep the feed storage dry and ventilated, and regularly clean and disinfect to maintain cleanliness and hygiene.

For the feed that has been moldy, do not feed, cantata eat moldy feed is not only hindered growth, but also immunity declines, easy to get sick, and affect the quality of cantata, serious can lead to the death of catfish.

2. Feed feeding technology

In terms of feed feeding, cantharid catfish is different from the general farmed carp, its sexual gluttony, stomach, should not be fed multiple times, feeding twice a day is better. The number of feedings exceeding 3 times a day may cause the body weight gain to decrease. In terms of feeding volume, it is better to stop feeding about 70% of cantalous, in the current situation, considering the weather, water temperature and material flow, catfish feeding should be observed, and the feeding stage after wintering should not be over-feeding.

In the stage of epidemic prevention and control, we must cooperate with epidemic prevention and control measures, and we must seize the special period of spring breeding to ensure that the key measures for spotted catfish culture are in place. We believe that we will work together to overcome the difficulties of the times and resolutely win the comprehensive victory of the prevention and control of the new coronavirus epidemic and the increase of production and income of cantaloupe aquaculture.