In order to reduce the death of yellow meal in the process of storage, five key points should be properly mastered:
First, choose a healthy, disease-free and non-injury Astragalus storage. At present, it is generally based on cages and hook-fishing. Cage (Aphididae) to catch Astragalus, can be stored except for scratches on the body.
A few, pay attention to control the water temperature. The water temperature for the storage of Astragalus should be controlled at 18-28°C. The difference between the water injection temperature and the water temperature in Dianchi Lake should not exceed 3 degrees.
Third, maintain the appropriate density. The storage density of Astragalus must be appropriate and not too large. The specific density depends on how much, how long, and how long it takes to store and maintain the nymphs.
Fourth, change the water temperature in time. There are many mucus on the surface of the skullcap. If the stocking density is high and the water is not changed in time, the mucus will accumulate. These mucilages consume a large amount of dissolved oxygen when they are decomposed, and generate heat, which causes the water temperature to rise significantly and cause the death of the jaundice.
Fifth, feed the right amount of palatable feed. When the yellow diet is put into the storage pool, if the fed feed is unpalatable, the yellow eel will ingest food for a long period of time, resulting in a closed mouth disease, which will lead to frailty and weight loss and eventually death. On the contrary, if the feed is palatable but it is fed too much, it will also cause the astragalus to eat too much and be susceptible to bloating and die. Therefore, for the stored jaundice, the fed feed should be palatable, but also appropriate.
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