What are the key points of daily management in snakehead fish farming?
Snakehead fish (Channa argus) is farmed to a certain extent in various regions of China. It has relatively high nutritional value, with large amounts of protein, amino acids and various other nutrients. Its flesh is tender and has little fishy smell, so there is also relatively high market demand for it. When farming snakehead fish, attention must be paid to daily management work to ensure farming profitability. So let me briefly introduce the daily management techniques for farming snakehead fish. Let's take a look!
1. Pond management
The half month after the successful hatching of snakehead fish fry is an important period for the growth of snakehead fish. The quality and amount of bait fed at this time directly affect the survival rate of the fry. We must also do a good job of disinfecting the pond, sprinkling quicklime powder over the whole pond. During disinfection, farmyard manure can also be used to cultivate water fleas to provide natural bait for snakehead fish. Sufficient bait is a key measure to ensure healthy growth of the fry and improve the survival rate. However, it is best to also sprinkle some microbial preparations in the pond, which can not only cultivate enough plankton but also avoid polluting the water quality.
2. Cultivating small fish and shrimp
Small fish and shrimp can also serve as bait for snakehead fish. When the fry grow to about 2 cm, they can begin eating small fish and shrimp. So we should cultivate some small fish and shrimp in the pond about 5 days in advance, with the stocking amount at about 90 times that of the snakehead fish. This bait not only cannot satisfy the demand of snakehead fish for bait, but its palatability is also very good. Then, according to the specific breeding quantity of snakehead fish fry, we should properly cultivate bait fish in another pond. This ensures that snakehead fish have sufficient bait throughout the entire growth period, with replenishment generally about once every half month.
3. Feeding management
When snakehead fish grow to about 4 cm, they can begin to be fed some mixed feed. Scatter the feed where they gather in groups to ensure it is sufficient and even. It is not advisable to feed at noon; keep feeding to morning and evening, with the evening feeding amount accounting for a larger proportion. The main feeding amount is determined by the fish's body weight and kept at about 18% of the fish's body weight. In the early stage, the feed is mainly minced fish, and in the later stage, fish chunks of reasonable size are fed according to the mouth opening size of the snakehead fish. Then, according to environmental changes, feeding conditions and various other aspects, the feeding amount should be appropriately increased. When feeding, the principle of fixed time, fixed location and fixed quantity should be followed to ensure the growth of snakehead fish.
4. Water quality management
When farming snakehead fish, we should properly polyculture some fish such as bighead carp in the pond, maintaining about 500 fish per sq m. Then attention must be paid to water quality management. If the water quality is found to be poor, change the water promptly to improve water quality. Alternatively, add some photosynthetic bacteria and other substances to regulate water quality, improve the fertility of the water body, ensure water quality, and create a good growth environment for snakehead fish. Then keep the pond water transparency at about 30 cm, and also do a good job of escape prevention and pest control.
The above is a brief introduction to the daily management of snakehead fish farming. The management work for snakehead fish is very important. Poor management will have an adverse impact on both yield and quality, so everyone must pay close attention to it. That is all for today's introduction. This article is for reference only. Thank you for reading and supporting us.