The leeches can be fed with natural bait, also called natural feed, mainly some living foods, such as mussels, snails, earthworms, Daphnia, insect larvae and so on. Or feeding artificial bait, which is a kind of food convenient for leeches to eat by artificially mixing various raw materials such as organic matter, chemicals, preservatives, water and fillers, and then mechanically processing.

1. What do cultured leeches eat?

1, cultured leeches can be fed with natural bait, also known as natural feed, which refers to the food available in nature, mainly including living food, such as mussels, snails, earthworms, Daphnia, insect larvae and so on. Natural bait comes from two sources. One is the bait for the natural growth and reproduction of leeches in the breeding environment. It is necessary to provide a good living space for these natural baits to breed in large quantities. The second is the natural bait released artificially, which is mainly captured artificially and then released into the environment where leeches are raised, so that these natural baits can reproduce and grow for leeches to eat.

2. It can also provide artificial bait for leeches. Artificial bait is a kind of food which is made by mixing organic matter, chemicals, preservatives, water, fillers and other raw materials manually and then processing them mechanically. The advantage of artificial bait is that it can meet all kinds of nutrients needed by leeches, achieve nutritional balance and promote their normal growth and development.

3. It is generally recommended to use natural feed when feeding. If artificial bait must be used, the following requirements must be met. First, it has good physical properties and is convenient for storage and feeding; Second, it has good chemical properties and can attract and stimulate leeches to suck blood; The supply of nutrients needed for the growth and development of the third pair of leeches must be balanced to avoid nutritional imbalance at a certain growth stage; Fourth, we should prevent harmful microbial pollution and play a role in disease prevention.

Second, what cage is better for keeping leeches in cages?

1, leeches can be cultivated in a rectangle made of polyethylene knottless mesh cloth, extending 0.15m to prevent eaves from escaping. All sides must be fixed with wooden stakes, and the upper end can be fastened with soft wire ropes. Before leech breeding, a fish pond with an area of 1 000m2 should be prepared. The bottom of the pond must be flat and free of silt, and the water level should not be lower than 1.0m all the year round. In the pond, the cages can be arranged in parallel and staggered rows, each row is 2 meters apart, and the cages in the row must be spaced apart, and the distance from the pond ridge is greater than 1.5 meters. Each fish pond can be equipped with 50 cages in a row of 10, with the water depth of 0.2m and the water outlet of 0.8m..

2. Young bdelloid cages must be sprayed with 250 ml 10% multivitamin, and then disinfected with 1 kg biological fishery fertilizer after about 24 hours. After all the preparations are completed, the young leeches must be kept in 20 cages with about 400 cocoons per catty, and then two foam box covers are placed in each cage. After 10, 2-3 inch loach and 4-5 summer grass carp are put in.

Snails can be fed in the cage of young leeches. Snails must be soaked in multivitamin solution for 8 hours before feeding, and then fed/kloc-0 every 3 days. The feeding amount should be adjusted and supplemented according to the number of floating snails left in the cage. You can fish snails from the lake area after splitting boxes, 0.8? 0.8cm、 1.2？ 1.2cm and 1.6? Different types of 1.6cm steel screens should be used for feeding.

4. Biological fertilizer must be applied when adjusting the water quality, and the dosage of water depth per mu per meter is 0.7 kg and 5 kg respectively. After the fertilizer is diluted, it can be sprayed according to the dosage of 2/3 in the box and13 outside the box. In addition, every 65,438+05 days, 20 ml of microbial preparation must be put into each cage to adjust the water and 65,438+00 grams of fungi. With the growth of leeches, the water level can gradually deepen to 0.5m of the cage water depth. In July, August, September and June of 5438+ 10, the 5-inch submersible pump can be started to pump water for 2 hours every day, and the water in the pond can flow and circulate through the culvert between the two fish ponds as a whole.