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A Detailed Guide to Efficient and Practical Yellow Catfish Farming Techniques
The yellow catfish (Pelteobagrus fulvidraco), commonly known as "yellow wax ding," typically weighs 200-300 grams. Its flesh is tender with few bones, its flavor is delicious, and it has no scales. It not only has nourishing properties but also holds relatively high medicinal value, with a market price of 20 yuan/kg. I. Fry and Fingerling Rearing 1. Pond Preparation Fry and fingerling ponds should ideally be
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A Complete Analysis of Grasshopper Farming Methods and Techniques
Grasshoppers, commonly known as locusts, are recognized as pests. However, several farmers including Gao Yunlong in Neiqiu County, Hebei, turned a pest into a treasure and found their way to prosperity by farming and selling grasshoppers, with annual income exceeding ten thousand yuan, and they also encouraged surrounding farmers to take up grasshopper farming. The value of grasshoppers. Grasshoppers are
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Detailed Explanation of Hedgehog Farming Techniques and Management Methods
The hedgehog, commonly known as ciwei, is a wild animal of the family Erinaceidae. It is a small medicinal animal with high economic value. With the decline of wild resources and the growth of domestic and international market demand, raising hedgehogs has excellent development potential. I. Medicinal Value The hedgehog's head and mouth resemble those of a rat,
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How to raise sheep in confinement? Breeding methods and technical key points
Sheep raised in confinement grow fast, reach market early, have good body condition, a relatively high dressing percentage, and good economic returns. So how should sheep be raised in confinement? (1) Sheep shed construction The sheep shed is built as a single-slope open shed or a fully enclosed type. For the single-slope open shed, the rear wall height is generally 1.8 m, and the roof slope is 15°. For the fully enclosed type, the wall height is 2.3-2.5 m, and the door width is 1.5-2 m. The floor of the shed is 20-30 cm above the ground outside, laid as a slope to facilitate drainage. Generally, each adult sheep occupies about 1.5-2 sq m, while pregnant ewes, lactating sheep, and breeding rams occupy slightly more area. The inside of the shed must be kept dry and well ventilated, and as far as possible warm in winter and cool in summer; an exercise yard is set up outside the shed, with an area about 2 times that of the sheep shed.
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How to Do a Good Job in Overwintering and Seed Stock Preservation for Tilapia in Earthen Pond Aquaculture
Tilapia, commonly known as: African crucian carp, non-crucian, Vietnamese fish, Nanyang crucian, etc. It originally referred to the fish species of the genus Oreochromis with Mozambique as the type locality: Mozambique mouthbrooder (scientific name: Oreochromis mossambicus). It is now the collective common name for several fish species of the genera Oreochromis and Sarotherodon in the family Cichlidae; in English they are collectively called Tilapia. It is now a freshwater aquaculture fish that is a key research and breeding target of the world's aquaculture industry, and is hailed as one of the main future sources of animal protein. It usually lives in freshwater, can also live in salt water with different salinity levels, and can also survive in shallow water in lakes, rivers, and ponds. It has strong adaptability, can reproduce even in small water areas, can even grow in rice fields, and has extremely strong adaptability to water with low dissolved oxygen. The vast majority of tilapia are omnivorous, often eating aquatic plants and debris.</p><p></p><p>There are many methods for overwintering and seed stock preservation of tilapia, but some are limited by resource conditions, with no hot springs or no warm drainage, and some have complex equipment and high investment. In order to explore a mass-oriented seed stock preservation method with low investment and simple equipment. Its main facilities and techniques are: </p><p>1. Construction of the overwintering pond: The tilapia overwintering pond should be built in a low-lying area that is sheltered from the wind and faces the sun, close to a river. In a place with solid soil, dig an earthen pond 4 m to 5 m long, 1 m to 2 m wide, and 2 m to 3 m deep. Water from the river channel can gradually seep into the earthen pond through the gaps in the soil layer, keeping the pond water fresh and the oxygen content sufficient. </p><p>2. Heat preservation facilities: Build a bamboo frame on the pond surface sloping toward the south, and cover the bamboo frame with two layers of plastic film, like a greenhouse for growing vegetable seedlings. The height between the pond surface and the film should be kept at about 0.1 m to 0.8 m; if the space is too large, it is not easy to keep warm. When the northwest wind blows, windbreak walls made of reeds or straw curtains should be made on the west and north sides of the overwintering pond. In frost and snow weather, straw curtains should be added over the film. If a cold wave invades and the temperature drops, 2 to 4 electric lights of 100 W to 200 W should be hung inside the plastic shed to raise the water temperature. In short, the pond water temperature should be kept at around 15°C to 16°C so that the fingerlings can safely pass the winter. </p><p>3. Putting fingerlings into the pond: Before the fingerlings are put into the pond, the overwintering pond should be filled with water and soaked for 3 days to 5 days to eliminate the effect of pollutants on the pond water. The time for putting fingerlings into the pond is generally in early November, and the water temperature should preferably be around 16°C; if too late, they are prone to cold damage. Before the fingerlings are put into the pond, they should be soaked in 4% salt water for 3 minutes to 5 minutes to disinfect the fish body and prevent infectious diseases. The density of fingerlings is 5 kg to 7.5 kg per cubic meter. </p><p>4. Overwintering management: During the entire overwintering period, specially assigned personnel should be on duty for management. At the same time, attention should be paid to changes in water temperature, changes in water quality, and the dynamics of the fish. </p><p>(1) Feeding: During the overwintering period, a small amount of feeding may be done, generally once every 10 days to 15 days, with the feeding amount at about 1% of the weight of the overwintering fingerlings, but when the water temperature exceeds 16°C, they can be fed once a day. Feed includes sugar dregs, rapeseed cake, etc. It should also be flexibly controlled according to the feeding situation so that the fish eat enough and eat well, in order to increase the overwintering survival rate and reduce losses.</p><p>(2) Lighting: Throughout the winter, as long as it is sunny, remove the straw curtains covering the heat preservation shed from 9:00 to 15:00 to let in light and raise the temperature. On snowy days, the snow on the frame should be swept off promptly to prevent the frame from being crushed and collapsing.</p><p>(3) Prevention and treatment of fish diseases: The overwintering period of tilapia is relatively long, and attention should be paid to observing whether there is fish disease. Once discovered, it should be treated promptly. During the overwintering period, saprolegniasis is the most common, mostly occurring after entering the pond and before leaving the pond. Saprolegniasis is a common disease caused by the attachment of fungi such as Saprolegnia and Pythium. With the naked eye, a grayish-white, soft, cotton-wool-like substance attached to the fish body can be observed. Injured fish bodies are highly susceptible to infection, and it occurs more frequently in winter and early spring. For treatment, alkaline green at a concentration of 0.1 mg to 0.2 mg/L or a copper sulfate solution at a concentration of 1 mg/L can be splashed over the whole pond, and it is effective. If pond oxygen deficiency occurs and fish gasp at the surface, more fresh water can be exchanged. </p>
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A Detailed Guide to Wild Boar Farming Techniques and Feeding Methods
Wild boars are not only very different in appearance from domestic pigs, but also grow much more slowly than domestic pigs and weigh more. Let's take a look below at the feeding techniques for farming wild boars. 1. Feeding. When raising them by hand, small wild boars are generally purchased for taming, with a body weight of 10-22 kg. In
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Detailed Explanation of the Key Technical Points for Raising Earthworms in Mulberry Orchards
The earthworm is commonly known as Dilong, also called Qushan, and is a representative animal of the class Oligochaeta in the phylum Annelida. Let us take a look together at the technology for raising earthworms in mulberry orchards. Selection of the mulberry orchard. At present, most existing mulberry orchards can be used as earthworm rearing sites, especially sparse-planted, wide-row mulberry orchards.
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How to keep cloud-pattern budgerigars? Key points for care and how to tell males from females
Parrots not only have beautiful feathers but are also very intelligent. If birds could be kept as pets, most people would probably choose to keep a parrot. There are many kinds of parrots, and the cloud-pattern budgerigar is one of them. So do you know how cloud-pattern
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What fish are good for polyculture with loach, and how deep should the water be?
The loach is known as the "ginseng of the water" and is a fish with very high nutritional value, distributed fairly widely in the southern regions of China. Loach meat is delicious and also rich in protein, loved by many people, and artificial farming is currently gradually increasing. However, loach
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How to Raise Grass Carp? A Detailed Explanation of Key Grass Carp Farming Techniques
Grass carp is one of the fish we commonly eat. Its flesh is very tender and delicious, and its nutritional value is extremely high, so eating it regularly is good for the body. As everyone's demand for grass carp gradually increases, farming grass carp has also become a relatively popular farming project. So how
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