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Key Technical Points for Grouper Culture in Earthen Ponds
Grouper is delicious and comes in a dazzling variety of forms, and is deeply loved by consumers everywhere. At present, cage culture is common in our country, but as the marine environment changes, cage culture suffers from more diseases that are difficult to control, so promoting grouper culture in earthen ponds is highly worthwhile. 1. Pond selection
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Key Management Techniques for Rearing Snakehead Fry in Earthen Ponds
Snakehead is one of the most common fish in our daily lives, and its nutritional value is very high. We all know that fish is rich in protein, and eating fish regularly is very helpful for human health, so we can eat more fish in our daily lives. Farming snakehead
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What are the harvesting methods for earthworm farming?
When earthworms have been raised to a certain degree, apart from a portion used for continued breeding, the rest are harvested to feed centipedes. Different rearing methods require different harvesting methods, and roughly the following methods can be used. 1) Light-driving method. This method is suitable for harvesting in indoor rearing beds,
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Earthworm summer farming requires good cooling work
Building a shed for shade: Through practical comparison, a curtain made of wheat straw or rice straw on the shed gives better shade than other methods (such as growing climbing plants, placing rapeseed baskets, etc.). Build the shed low in the south and high in the north. Hang the straw curtain first from the center of the shed roof. Cover the worm bed with a straw curtain, preferably with water hyacinth
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What are the breeding methods for river crab seedlings in earthen ponds?
I. Earthen pond river crab seedling rearing Earthen pond river crab seedling rearing refers to the method of artificially rearing river crab larvae in excavated ponds using natural seawater in coastal areas. This method is low in cost, simple and practical, and is suitable for specialized crab farming households. In addition to the rearing pond, earthen pond crab seedling rearing
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Methods and Key Technical Points for Raising Earthworms with Biogas Residue
Earthworms have a high protein content and contain a variety of nutrients. They are not only good feed for chickens, ducks, pigs, and fish, but also a beneficial food for humans. Earthworm castings can activate soil and are a high-grade horticultural fertilizer. Earthworm castings contain up to 11%-68% humic acid, which can promote
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Key Technical Points for Mixed Culture of Snails and Earthworms
In order to improve the economic benefits and biological conversion of snail farming, many places are now adopting the method of mixed culture of snails and earthworms. Using this rearing method can increase the production of both earthworms and snails at the same time. This is because the excrement of the giant African snail (Achatina fulica) is rich in
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Detailed Explanation of Key Techniques for Mixed Culture of Snails and Earthworms
Using a multi-tiered frame with multi-level flat netting for mixed culture of snails and earthworms can achieve the goals of low energy consumption, small space, simple management, and rapid high yield. I. Variety Selection For snails, the White Jade snail can generally be used, but it is best to use the more cold-tolerant French Light Great snail, so that it can grow and reproduce in sync with earthworms throughout the four seasons. For earthworms, choose species that grow and develop quickly, have strong reproductive capacity, broad adaptability, long lifespan, and are easy to domesticate and manage. At present, the most ideal varieties are Beixing No. 2 and Daping No. 2.</p><p>II. Culture Method Idle houses or plastic greenhouses can be used for culture. Snails are cultured using multi-tiered frames with multi-level flat netting, while earthworms are cultured in boxes. The multi-tiered frame is 3 m long, 1.2 m wide, and 3 m high, with 11 tiers of bed frames arranged from top to bottom, each tier 20 cm apart, and the lowest tier 60 cm above the ground. Each tier is fixed with nylon netting stretched tight to form a supporting net bed. The mesh of the top 1-2 net beds is 1 mesh or larger, so that egg-laying breeder snails cannot pass through the mesh, while medium and young snails can fall through the mesh. The mesh of the 3rd-4th net beds is 2 mesh, the 5th-6th net beds is 3 mesh, the 7th-8th net beds is 4 mesh, the 9th-10th net beds is 6 mesh, and the bottom net bed is 8 mesh. On one side of the topmost net bed, make an egg-laying and hatching bed 30 cm wide and 25 cm high, and place hatching substrate about 20 cm thick into the egg-laying and hatching bed. The substrate is made by mixing sawdust, rice straw (cut into 2 cm lengths), and garden soil at a ratio of 1:1:1 and fermenting the mixture. Apply lime slurry around each tier of the frame to prevent snails from crawling off the net beds.</p><p>The bottom layer of the multi-tiered frame is enclosed with wooden boards to form a box 30 cm high. Place 10 cm thick garden soil into the bottom of the box, then add fermented material of rotted cow dung or pig dung and rice straw, and mix in 20% well-fermented sawdust as feed for the earthworms. The moisture content of the feed should be kept above 60%.</p><p>III. Stocking and Culture When the temperature is above 15°C, stocking and culture can begin. The top tier of the frame is the breeder snail tier, and outbred parent-line breeder snails can be stocked at a density of 200 per sq m. Breeder earthworms can be stocked at 2.5 kg per sq m (about 5,000 individuals).</p><p>Snails have a very broad diet. Various vegetables, aquatic plants, crop stems and leaves, and even the leaves of broadleaf trees can all be used for feeding. Earthworms have an even more omnivorous diet; almost all plant residues, humus, decaying animals, and household garbage are their food. When feeding, wash the green feed and place it directly on the 1st-2nd net beds. In this way, the small fragments left after the breeder snails eat will fall into the net beds below and become feed for the medium and young snails, while the feces and food residues produced by the snails on each net bed fall onto the earthworm bed and become food for the earthworms. According to estimates: 5 kg of large snails (about 100 individuals) excrete about 0.3 kg of feces per day, and together with the snails' food residues, this can feed more than 0.5 kg of earthworms. When the young snails bred by the breeder snails fall downward and become distributed among the net beds on each tier, the snails' feces and food residues are basically enough to feed the earthworms in the earthworm bed. In this way, not only is the tedious work of feeding and cleaning feces reduced, but the feed utilization rate is also greatly improved.</p><p>IV. Key Management Points With reasonable regulation of the environmental ecology, snails and earthworms have almost no threat of disease.</p><p>1. Temperature The temperature should be kept above 20°C. If the temperature reaches 30°C, attention should be paid to taking cooling measures. If the temperature is below 15°C, heating should be carried out.</p><p>2. Light Snails and earthworms are both shade-loving animals and have the habit of hiding by day and coming out at night. During culture, pay attention to the amount of light. The illuminance of one 3-watt bulb per 10 sq m in a dark room is suitable.</p><p>3. Humidity Snails and earthworms both like humid environments. The indoor air humidity should be kept at 60%-70%. The humidity of the snail hatching substrate should be kept at 30%-40%, while the humidity of the earthworm feed should be kept at 60%-66%. Snail feed should be soaked and then fed.</p><p>4. Air High-density culture of snails and earthworms will produce large amounts of harmful gases. Therefore, attention should be paid to frequent ventilation to maintain sufficient oxygen. At the same time, during their life activities, earthworms will continuously deposit feces on the surface of the feed, so the earthworm feces should be cleaned frequently to facilitate air circulation.</p><p>5. Grading and Harvesting</p><p>Grading of snails Snails have the habit of the large eating the small, so large, medium, and small snails of different ages in months cannot be mixed. Net beds with different mesh sizes are used for culture so that the snails automatically screen and grade themselves, that is, snails of different sizes will retract their heads when frightened (such as by strong light or vibration) and tumble down to the lower tier. When snails of each grade grow to the age in months of the next higher grade, manual selection is needed. At the same time, the adult snails above can all be harvested.</p><p>Harvesting of earthworms When most earthworms in the bed have reached a body weight of 400-500 mg, at which point the density per sq m has reached 15,000-20,000 individuals, most of the adult earthworms can be harvested.</p>
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Practical Techniques for Rapid Earthworm Breeding in the Courtyard
The earthworm is a high-quality animal protein supplement feed; its fresh body contains 12%-20% protein, and its dry body contains 50%-70% protein, of which the effective amino acid content reaches 58%-62%. Breeding earthworms in the courtyard offers abundant resources, a suitable environment, and convenient management. 1. The life of the earthworm
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Detailed Explanation of Key Technical Points for Earthworm Farming in Greenhouses
With the development of the farming of famous and special aquatic products such as rice field eel and spiny frog (stone frog), the use of earthworms as bait and fresh feed is increasing day by day, and the area of supporting earthworm farming at breeding farms is continuously expanding. However, because some farms have not mastered earthworm farming techniques well, their farming results are
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