Key Technical Points and Management Methods for Northern Pike Farming
The northern pike, also known as the black-spotted pike, is a common freshwater fish and the most ferocious carnivorous fish of all freshwater fish. The northern pike grows fast, its flesh is tender and refreshing, it tastes delicious, and it does not have a strong fishy smell, so its food value is very high. China now also has a certain amount of farming area for it, and it is distributed in various places, so how should the northern pike be farmed? Below, the editor brings you the farming techniques for northern pike, let's take a look!
1. Pond preparation
Before farming northern pike, you must first prepare the farming pond. Control the pond area according to the farming quantity, generally around 6-7 mu, with the depth controlled at more than 2 m. Ensure sufficient water source, good drainage and irrigation capacity, and the ability to adjust the water temperature normally. Then carry out a comprehensive and thorough disinfection of the pond. About 3 days before putting in the fry, splash an appropriate amount of soybean milk into the pond to increase the biological feed in the pond. Then place plants such as water lettuce on the pond to provide shade, and plant an appropriate amount of aquatic plants as hiding places for the northern pike to prevent the northern pike from cannibalizing each other.
2. Feed preparation
The northern pike is a carnivorous fish, so the main bait is mainly small fish. Therefore, before stocking northern pike fry, we must put sufficient forage fish into the pond, and the body length of the forage fish should be kept at about 5 cm. It is best to cultivate them in the original northern pike pond, but before stocking, the forage fish must be disinfected to prevent them from carrying pathogens into the pond and affecting the growth of the northern pike. Then apply fertilizer appropriately to cultivate the forage fish, with the forage fish mainly being carp, silver carp, and so on. When the forage fish grow to about 5 cun, then put in northern pike fry of the same growth size.
3. Grow-out management
As the northern pike grows for longer and longer, its requirements for the palatability of the forage fish become stricter, and the amount eaten each time will also gradually increase. Therefore, we must reasonably adjust the feeding frequency and amount according to the growth progress of the northern pike. Also, pay attention to doing a sorting and separate rearing treatment once a month, putting those of the same size together for rearing, to prevent the northern pike from cannibalizing each other and the undesirable phenomena of big fish eating small fish and strong fish eating weak fish. Then, under sufficient and healthy feed and normal management, when the northern pike is raised to the end of the year, its body weight can reach about 2 jin, reaching the standard for market listing, and it can be harvested at the appropriate time.
4. Disease prevention and control
The northern pike has strong growth ability and generally does not develop disease, with a low incidence rate. However, under artificial farming conditions, the disease resistance of the northern pike will be reduced, so we must do a good job in management when farming. If management is poor, the northern pike is very prone to branchiomycosis, which will seriously hinder the breathing of the northern pike and cause it to die from hypoxia in the later stage. During the farming process, we must keep the water quality good, clean and pollution-free, and cool, creating a good growth environment for the northern pike. After disease occurs, promptly splash agents such as Yilvjing into the pond for disinfection and prevention and control, to avoid worsening the disease.
The above is a brief introduction to northern pike farming techniques. Northern pike is divided into the white-spotted pike and the black-spotted pike, and this method is mainly suitable for the black-spotted pike. Management during the farming process is very important, and everyone must pay close attention to it to avoid unnecessary losses. That is all for today's introduction. This article is for reference only. Thank you for reading and your support.