Reasons for failure in yellow eel farming for beginners: the following 7 points need attention
AbstractPoor quality of fry and fingerlings: it is advisable to choose high-quality fry and fingerlings such as deep yellow large-spot and earthy red large-spot. Pond water too deep: the water depth should be about 5-20cm. Mixed culture of large and small: the food will all be eaten by the large eels, and when hungry the large eels will swallow the young eels. Frequent feed changes: yellow eels will find it difficult to adapt and will refuse to eat. Applying too much manure in the pond: it damages water quality and induces disease. Neglecting to cultivate aquatic plants: it is difficult to achieve high yield and high quality. Feeding vegetarian food: nutritional imbalance causes yellow eels to become thin or die.
1. Poor quality of fry and fingerlings
During farming, so-called artificially bred fry and fingerlings, or other so-called high-quality fry and fingerlings, are purchased, but generally they are actually wild fry and fingerlings that have been bought up, and because of improper operations such as multi-stage storage and transportation, these fry and fingerlings have a relatively high mortality rate during farming. Therefore, when purchasing fry and fingerlings, it is essential to carefully identify high-quality fry and fingerlings. In appearance, yellow eels include varieties such as deep yellow large-spot, earthy red large-spot, and light yellow fine-spot, and only choosing deep yellow large-spot and earthy red large-spot will accelerate the growth rate, and generally only artificial farming can achieve relatively good economic benefits.
2. Pond water too deep
Generally, yellow eels have no swim bladder in their bodies, so they are not suited to floating freely at different water surface layers, nor can they stay and expose themselves above the water surface. When the pond water is too deep, yellow eels need to frequently swim to the water surface to breathe, which consumes a large amount of physical energy and is not conducive to normal growth. When farming yellow eels in ponds, the water depth should be based on the size of the eel bodies, and the water depth should be about 5-20cm. When farming yellow eels in net cages, aquatic plants should cover the entire net cage, so that yellow eels have good breathing conditions and habitat.
3. Mixed culture of large and small
When large and small eels are mixed in a pond, the young eels do not dare to compete for food, which leads to weakened constitution or death. When bait is insufficient, the large eels will also swallow the young eels, so although the large eels grow quickly in mixed culture of large and small eels, it causes the total pond yield to be relatively low.
4. Frequent feed changes
Yellow eel feed must be stable. If the type of feed is frequently changed, yellow eels will find it difficult to adapt and will refuse to eat. Frequently changing the type of bait for feeding will affect the normal growth of yellow eels.
5. Applying manure in the pond
Because the water body of the eel pond is relatively small, applying too much manure will easily spoil the water quality, thereby inducing various diseases and leading to a loss that outweighs the gain.
6. Neglecting to cultivate aquatic plants
Aquatic plants can purify water quality and prevent heatstroke and cool down yellow eels. If there are no aquatic plants cultivated in the eel pond, the ecological environment will be poor, which is not conducive to farming yellow eels, and it is difficult to achieve high yield and high quality.
7.Feeding vegetarian food
If yellow eels are fed wheat bran, rapeseed cake, soybean residue, rice, etc. for a long time, or green vegetables and other plant-based vegetarian food, they will also eat a small amount when severely hungry, but the nutrition cannot meet the growth needs of yellow eels. The yellow eels will not gain weight, and instead will gradually become thin and weak and die. Yellow eels are a fierce carnivorous species, and should be fed complete formula feed and animal-based feed.