What are the common farming methods for freshwater mussels?

Farming freshwater mussels is a relatively profitable project, but the farming period takes a long time and cost recovery is slow. At present, there are two common methods for farming freshwater mussels: one is suspended culture, and the other is cage culture. These two methods are more convenient to manage and easier to popularize. Below, Qinongwang briefly introduces these two methods to everyone.

1. Suspended culture

This method is suitable for waters with relatively shallow water levels and relatively clear water quality, making daily management and observation convenient. First, prepare fixed points in the farming area, then attach a series of ropes to the fixed points, with the length determined by the water depth. Generally, the farming depth in summer is 30-40 cm, and in winter 40-60 cm. Fix 2-8 mussels on each rope; too many is not good for the growth of the mussels. The spacing of the ropes is based on their length, at about 60%-70% of the rope length, that is, a 1-meter rope has a spacing of 70 cm, which can greatly avoid tangling of the ropes.

Advantages and disadvantages of farming: The advantage is that the farming depth can be adjusted according to seasonal changes, giving the mussels a better living space. The water area requirement is shallow, and the farming conditions are relatively simple. Daily management or harvesting is relatively convenient, which can reduce relative labor costs. The disadvantage is that stability is relatively poor, and the mussels on the ropes are prone to falling off. Resistance to disasters is relatively poor, and they are also easily attacked by certain predatory animals in the water. They have no good ability to resist harmful parasites and similar things on the bottom.

2. Cage culture

This method is suitable for waters with relatively deep water levels. The optimal depth is controlled at about 2-4 m, so that the mussels can grow as close to nature as possible under artificial protection. Cage culture mainly requires setting up floating raft boxes on the water surface, then connecting and fixing the cages to the raft boxes, and then putting them into the water. The silt at the farming site should not be too deep. The farming density for cage culture should be kept at a level that can cover most of the cage bottom, with some space appropriately left for the mussels' survival after they grow larger.

Advantages and disadvantages of farming: The advantage of farming is that it can provide the mussels with a safe farming site and resist most external harm in the early stage. The harvesting method is extremely simple; you only need to pull the cage up. The farming environment is close to original ecological farming, so the quality is relatively much higher. Its disadvantage is that it is not conducive to daily management, and dead mussels cannot be discovered and handled in time. Also, the cages are easily covered by attachments and need frequent cleaning, resulting in relatively high labor costs. It is also relatively easy for poor development to occur due to farming density, and feed needs to be added irregularly.

The above are the conventional methods for farming freshwater mussels. At present, farmers in various places are actively developing new methods, and it is believed that better farming methods will appear later. Site selection for farming freshwater mussels is very important. If the site is chosen well, later management will be very easy. Everyone must choose the site carefully and meticulously when farming.