What are the breeding methods and required conditions for bloodworms?
SummaryBreeding conditions: Use natural water for rearing, change the water once a day, and choose a large-mouth container. Light source control: At night, a 5-watt small light bulb can be used as a light source. Water quality regulation: The water depth is 3-5cm, and the water flow rate needs to be 5-10 liters per second. Bait feeding: Generally feed once every 3-4 days, each time 50-100kg of manure per mu, mix it with water and sprinkle it over the whole pond.
I. Breeding conditions
1. Bloodworms prefer to live in slightly flowing fertile water, so this condition must be met during artificial breeding. Generally, in late spring and early autumn each year, this is the season when bloodworms reproduce in large numbers. At this time, bloodworms will float on the water surface, causing the water surface to become brownish-red, so a container is needed to collect them.
2. For small-scale breeding, the bottom mud and bloodworms can be taken back together and placed in a glass container, then reared with natural water. If tap water is used for rearing, the tap water first needs to be placed in the sun for 2-3 days.
3. During rearing, change the water once a day. In low temperatures, cold protection measures should be taken, so a red wet towel can be used to cover the container to keep it moist. The container needs to have a large mouth so that bloodworms will float to the surface to breathe. If the container mouth is relatively small, they are prone to dying.
II. Light source control
The light source is very critical in bloodworm breeding, because bloodworms cannot do without light, so the light must not be turned off at night. If there is no light source at night, bloodworms will be too lazy to breathe because of it and are prone to dying. Generally, at night a 5-watt small light bulb can be used as a light source.
III. Water quality regulation
1. A water depth of 3-5cm is suitable. When breeding in spring, the water level can be slightly shallower during the day to raise the water temperature, while at night the water level can be appropriately deepened, which helps with heat preservation and cold protection.
2. Bloodworms prefer a slightly flowing water environment. If the water flow is too strong, it will carry away nutrients and eggs from the culture medium, and also consume a large amount of the bloodworms' energy, which is not conducive to increasing yield.
3. If the water flow is too small, it is also not conducive to the discharge of water body and excrement, and it easily leads to water quality deterioration and death. According to practical production experience, a water flow rate of 5-10 liters per second is a relatively good water flow environment.
4. At the same time, bloodworms are relatively sensitive to pesticides and harmful substances, so this point should be noted in water quality management. Water sprayed with pesticides and industrial wastewater must not be used.
IV. Bait feeding
1. Bloodworms mainly feed on organic detritus in the soil and are very fond of sweet and acidic bait. Poultry manure, domestic sewage, and the like are all bait for bloodworms. Generally, in professional farms, rice bran, sawdust, sludge, pigeon manure, and other raw materials are fermented to make feed. For household breeding, yeast powder soaked in water can be used for feeding.
2. Feeding is also a key point in bloodworm production. Feeding small amounts multiple times can increase yield. Generally feed once every 3-4 days, each time 50-100kg of manure per mu, mix it with water and sprinkle it over the whole pond.
3. When feeding, pay attention to the amount of residual bait and do not blindly feed too much, to prevent excessive organic matter in the water body from causing fermentation and producing toxic substances, which would affect later bloodworm yield.