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Overwintering Cold-Protection Management Technical Measures for Tilapia Aquaculture
Tilapia has the characteristics of being omnivorous, easy to raise, fast-growing, quick to reach market size, low in cost, and less prone to disease, making it an excellent species widely cultured in our province. However, this fish is a tropical and subtropical species, and whenever a strong cold front moves south and the water temperature drops to around 10°C, there is a risk of freezing to death and cold injury.
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Overwintering Management Techniques for Rana Chensinensis in Enclosed-Gully Farming
Rana chensinensis has the habit of hibernating and overwintering underwater. From late September each year to mid-to-late April of the following year, a period of up to 6 months, the overwintering management of artificially enclosed-gully frog farming consists of selecting and creating suitable overwintering sites and aquatic environments according to the characteristics and needs of Rana chensinensis during this period,
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Bullfrog Farming Techniques: Key Points for Rearing and Managing Adult Bullfrogs
After young bullfrogs have been cultivated for a period and their individuals have grown to 50 g-100 g, they can enter the adult frog farming stage. Selection and design of adult frog ponds. Adult frogs are stronger than young frogs in both adaptability and predation ability, so the adult frog farming site should be larger; for example, various natural water-holding ponds, pits and ponds, fish ponds, weed-covered lowlands, and rice fields can all be used, and ponds can also be built under melon sheds, in tree shade in front of or behind houses, or under grape trellises in courtyards.
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What points should be noted in sturgeon fry rearing?
With the vigorous rise of sturgeon aquaculture, the price of commercial sturgeon keeps falling, and the profit margin is getting smaller and smaller. Improving the survival rate of sturgeon fry and fingerlings is one of the main means of increasing profits in sturgeon aquaculture. Farming sturgeon in the south generally requires southward relocation and acclimation, which
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How to select breeding nutria? Sharing breeding experience
Generally, adult nutria from 6-7 months to 3 years of age are selected. Selection work should be carried out year-round, and it is best to conduct quality evaluation of the breeding stock from late November to mid-January. Selection is based on body size, body weight, body condition, fur quality, color, reproductive capacity, progeny quality, and other factors.
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Key management points for high-quality, efficient scorpion farming
1. Separation of mother and baby scorpions. When the 2nd-instar scorpions leave the mother's back, they should be separated by size in a timely manner. This is because: First, the female scorpion consumes a great deal of energy during the birthing period, loses a relatively large amount of body fluids, and becomes physically weak, urgently needing to search for food to replenish herself. If they are not separated, the female scorpion will attack the young scorpions when short of water and food.
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How to build a rearing room and rearing pools for ground beetle (Eupolyphaga sinensis) farming
It is very necessary to create a good, comfortable living environment for ground beetles; suitable sites and equipment can make ground beetles grow quickly and increase yields. At present, there are mainly two kinds of rearing rooms for farming ground beetles: ordinary rearing houses and greenhouse-style rearing houses. 1. Ordinary rearing houses should
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Sharing Experience on Spring Safety Management of Goslings
People often say: Spring geese are easy to raise, but spring goslings are hard to brood. In large-scale production, the mortality rate of goslings from 0 days to 21 days of age is relatively high, among which mortality caused by harsh environmental conditions and unscientific management accounts for more than 60% of the total deaths of goslings. Environmental factors causing gosling deaths such as
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Three diseases to focus on preventing when raising cattle in spring
I. Bovine pleuropneumonia Symptoms There are three clinical types (1) Acute septicemic type: body temperature suddenly rises above 40°C, pulse quickens, appetite decreases, coat becomes rough and unkempt, muzzle is dry, breathing is difficult, rumination stops, sometimes nasal discharge and tears flow, diarrhea, the feces
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Experience Sharing on Placing Fish-Rearing Cages in Flat-Bottomed Rivers
In flat-bottomed rivers with a water depth of more than 2.5 m and little year-round variation in water level, fish farming with cages works very well. 1) Generally speaking, a height of 50 cm between the cage bottom and the riverbed is sufficient. Leaving a gap between the cage bottom and the riverbed facilitates water flow, which first adds oxygen and second serves to exchange water ⟦4 <p>In flat-bottomed rivers with a water depth of more than 2.5 m and little year-round variation in water level, fish farming with cages works very well. </p><p></p><p>1) Generally speaking, a height of 50 cm between the cage bottom and the riverbed is sufficient. Leaving a gap between the cage bottom and the riverbed facilitates water flow, which first adds oxygen and second serves to exchange water and improve water quality. The height of the cage body can be 2.5-3 m. After this depth is immersed in water, 50 cm of netting is left above the water surface to prevent jumping fish from escaping. It is best to cover the top with netting to prevent birds from stealing and eating the fish. </p><p>2) It must be noted that the cage should be placed in a sunny spot, a place with a gentle flow speed, or a place with backflow. As far as the whole river channel is concerned, backflow areas are often places where fish gather; backflow areas have gentle flow speeds and abundant feed, making them very suitable for fish growth. </p><p>3) If the river channel is not deep, moso bamboo can be driven in as stakes, the cage tied with ropes, and marker lines indicating the cage's draught depth marked on the stakes, making it easy to adjust in time and stabilize the cage depth. Use slip knots for the ropes to make it easy to raise and lower the cage body. </p><p>4) For this fixed-type cage, tie straight strip-like objects along the top and bottom ropes of the cage body; for example, thin bamboo poles can be used for the top and bottom ropes, and iron bars can also be used for the bottom rope, stretching the entire cage flat and straight, avoiding folding of the netting in the water and reducing capacity. Install rings at the four corners of the cage. When in use, fit the rings at the four corners onto the bamboo stakes, and the formed cage will be firmly tied to the bamboo stakes and ready for farming. The rings can also be tied to the bamboo stakes, four on the top and four on the bottom, using pull ropes to control the entire cage body, following the rise and fall of the water level, and adjusting the draught depth of the cage body in time. In places with gentle flowing water, feed is most abundant. When the cage body is flat and straight, the fish are most comfortable. </p>
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