How Long Is the Largemouth Bass Farming Cycle? A Detailed Guide to Farming Techniques and Growth Rate
Bass is one of the more commonly eaten types of fish in our daily lives, and many people know that its nutritional value is very high and its flavor is delicious; eating it in moderation is very beneficial to human health. But what people do not know is that bass actually has many popular species. The largemouth bass is a typical carnivorous freshwater fish and is also one of the most important sport fish in the United States. So what are its farming methods? Let us take a look together.
Largemouth Bass Farming Techniques
1. Farming models and fry stocking density
Pond farming of largemouth bass has two methods: polyculture and monoculture. Polyculture can be carried out either in adult fish ponds or broodstock ponds, or in fingerling ponds. Usually, medium- and low-yield adult fish or fingerling ponds producing 300-400 kg per 0.067 hectares are chosen, mainly relying on natural forage fish in the pond, and 20-50 largemouth bass summerlings of 3-5 cm in size can be stocked per 0.067 hectares. For pond monoculture of largemouth bass, the fingerling size should be larger. Generally, largemouth bass of 8-10 cm in size can be stocked at 1,000-2,000 fish per 0.067 hectares, and after more than 5 months of rearing, the average size at year-end harvest is over 250 grams.
2. Bait and feeding methods
To raise largemouth bass well, the key is to have enough suitably sized forage fish. At present, the main solutions are: first, using fingerling ponds to raise silver carp and bighead carp fry; second, using adult fish ponds and enclosing part of the pond body with nets to raise small fish; third, buying wild miscellaneous fish; fourth, buying special compound feed. The largemouth bass is a ferocious fish that feeds on live fish. If the amount of live fish fed is counted by number, it can be fed at 2-3 times the stocking amount. If counted by weight, the general daily feeding amount is 10%-12% of its total body weight.
3. Rearing management
The main tasks are water quality management, water level management and fish pond environment management. The largemouth bass is a ferocious fish that likes to eat animal-based bait. It requires fresh water quality and abundant dissolved oxygen. Therefore, throughout the farming process, the water quality should not be too fertile. Especially in summer and autumn, because a large amount of bait is fed, water quality can easily deteriorate, so regular water changes and the addition of new water must be maintained.
4. Fish disease prevention and control
During pond farming, largemouth bass generally has fewer diseases. The fish diseases found so far mainly include: saprolegniasis, furunculosis and parasitic diseases such as anchor worms. For saprolegniasis and furunculosis, medicinal bathing with salt solution is highly effective. For parasitic diseases such as anchor worms, generally (0.5-0.67)×10-6 trichlorfon can be splashed over the whole pond, and the prevention and control effect is quite ideal.
How Long Is the Largemouth Bass Farming Cycle
Generally speaking, from entering the cage to adult fish farming, largemouth bass needs about half a month of feeding acclimation time and 4-5 times of cage division and screening; each cage division and screening requires 5-7 days before the second one can be carried out, and when the adult fish reaches 0.5-1 kg, it meets the market requirement. Therefore, we can calculate that the largemouth bass farming cycle is about 3 months.
Largemouth Bass Growth Rate
The growth rate of largemouth bass varies and is related to the care taken during farming, and after 1 month of rearing, uneven sizes often appear; larger individuals will prey on smaller individuals, so fish of different sizes should be separated and raised in time, and those reaching market size should be caught and sold in time. Therefore, during fry rearing, the following points must be noted:
1. Fry stocked in the same pond should be from the same batch of hatching, so that the fry are uniform in size.
2. When the fry grow to about 3 cm and the scales are relatively complete, they should be caught with a net and screened, and divided into three ponds according to large, medium and small grades for rearing. Afterward, concrete ponds should be thinned once every 10 days, and ponds once every 20 days, and the fry stocked in the same pond should preferably differ in body weight by less than one fold.
3. The largemouth bass has a strong appetite, and juvenile fish can consume up to 50% of their own body weight per day, so feeding must be done at fixed times and in fixed amounts to ensure sufficient bait supply, so that the smaller individuals can also eat their fill.
What Issues Need Attention When Farming Largemouth Bass
1. Inspect the fish pond every day, observe the activity of the fish school and changes in water quality, avoid pond water that is too turbid or too fertile, and keep transparency at about 30 cm. Discover problems in time and take measures to solve them.
2. Strictly prevent pesticides, public hazard substances and the like from flowing into the pond, so as not to cause the death of pond fish. Juvenile fish are especially sensitive to pesticides, and even a very small dose can cause the death of all fry in the pond, so great attention must be paid.
3. The feeding amount should be appropriate, and must not be too much or too little. At the same time, avoid long-term use of a single feed; vitamins and minerals should be added to the feed to maintain normal nutritional requirements.
4. Grade and thin in time, about once every 2 months, stocking fish of the same size in the same pond to avoid big fish eating small fish. The separation work should be carried out in the morning when the weather is good, and must not be done when the weather is hot or cold.
From the above, it can be seen that the growth rate of largemouth bass is very fast and its predation is very ferocious. If there is insufficient feed, the larger bass will kill and eat the smaller ones. Therefore, everyone should patrol frequently during the farming process and promptly divide bass of different sizes into separate ponds.