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What are the precautions for stocking fish fingerlings in early spring? Farmers should keep these points in mind
1. Fingerling quality: The fingerlings to be stocked should be of the same species and same age, uniform in size, robust and uninjured, with intact scales and fin rays, strong upstream swimming ability, and after being removed from water, the gill cover should not open and the fish should keep jumping. 2. Fingerling disinfection: When disinfecting fingerlings, note: ① The medicine should be prepared and used immediately; use clean water to prepare the solution, avoid using fertilized water, and avoid direct sunlight when soaking the fingerlings in the medicine. ② The dosage must be accurate, avoiding insufficient or excessive medication. ③ The soaking time should be appropriate. If signs of poisoning appear in the fingerlings, immediately add water
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Detailed Explanation of Key Technical Points for Restocking Fish Fingerlings After Heavy Rain
Every year, some areas are hit by typhoons and heavy rain, causing fish pond embankments to collapse and serious fish escapes. After the rainy season, timely restocking of fish fingerlings will reduce the losses caused by flooding to a minimum. The techniques for restocking fish fingerlings after heavy rain are introduced below. 1. Sources of fish fingerlings After heavy rain, if the weather is hot, fish fingerlings are not convenient to transport over long distances, so they are generally obtained locally, or caught from nearby natural water bodies. The caught fish fingerlings should be stocked nearby, and the time out of water must not be too long. All operations
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How to prevent disease when stocking fish in spring? A detailed guide to practical measures
In spring, as water temperatures rise, pathogens multiply easily. When stocking fish, besides choosing high-quality fingerlings of uniform size and without injuries, attention must also be paid to preventing disease. The main measures are as follows: Pond preparation and tool disinfection. Before stocking fish, weeds should be removed, excess silt cleared away, leaks plugged, and the pond bottom leveled. Then quicklime, bleaching powder, and other substances should be applied by broadcasting over the entire pond. Fishing nets, fish buckets, and other @#@233@#@ tools should be exposed to sunlight for about 2 days before use, or soaked and disinfected in high-concentration quicklime water, bleaching powder solution, and the like.
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Methods and techniques for stocking fish fingerlings in early spring
Early spring is the best season for stocking fish fingerlings, because during this period the water temperature is relatively low, the fish's activity is reduced, and the fish scales are tight, the fish body is firm, and they are not easily injured during netting, catching and transport, which can increase the survival rate of stocked fingerlings. When stocking fingerlings, attention should be paid to the following aspects: fingerling quality - fingerlings of the same species and same age should be uniform in size, with little difference in body length and weight, thick back muscles, bright coloration, scales and fins intact without damage, swimming actively and normally, strong upstream-swimming ability, and after being taken out of the water and placed in a basin, the gill covers do not open and the tail
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What is the appropriate stocking density for raising pigs?
The stocking density of pigs refers to the pen area occupied by each pig, usually expressed as "sq m/pig". Stocking density indicates how densely the pigs are housed in the barn. Stocking density has a great influence on the air environment inside the barn. If too many pigs are housed, more heat is released, which helps keep the pig barn warm in winter but is unfavorable for heat protection and cooling in summer; it increases the levels of harmful gases, water vapor, dust and microorganisms in the barn, and also makes fighting among pigs frequent, affecting feed intake and rest. If too few pigs are housed, then
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Stocking fish fingerlings in cages in autumn has many benefits, and the timing of release matters
After autumn fertilization in the pond, fish fingerlings are generally in robust health and adapt easily to the cage environment. At the same time, overwintering in sunken cages in large water bodies not only consumes less body weight in the fingerlings than overwintering in ponds, but also, after overwintering ends and the cages are raised in spring, the fish begin feeding earlier, and their growth period is extended by about 1 month compared with fish stocked in spring, so the fish grow quickly and production increases noticeably. Compared with fingerlings stocked in spring, fingerlings overwintered in sunken cages grow about 30% faster and are about 35% larger in size when removed from the cages. Therefore, stocking fingerlings in cages in autumn for overwintering is a relatively scientific
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Key Technical Measures for Stocking Fish Fry in Winter
As the saying goes, "Stock fish fry in spring and they catch disease; stock fish fry in winter and they grow three fen." Practice has proven that the period from the Winter Solstice to the Start of Spring is the best time to stock fish fry. There are three reasons: first, the fry are plump and firm-scaled at this time, with strong adaptability. Second, the low water temperature weakens the fish's activity, resulting in a high survival rate during catching and stocking. Third, it avoids the trouble of merging ponds for overwintering, allowing the fry to be dispersed and intensively reared earlier, promoting early spring growth. 1. Pond renovation. Use the idle winter season to renovate fish ponds: turn small ponds into large ones, stagnant ponds into aerated ones, and shallow ponds
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Cost and Profit Analysis of Main-Stocking Bream in Ponds
Cost and Output Profit of Main-Stocking Bream in Ponds
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Key Technical Points for Feeding and Management of Piglets After Restocking
Feeding and Management Techniques for Restocked Piglets
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