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Experience Sharing on Rotational Culture of Giant Freshwater Prawn and Mandarin Fish
Macrobrachium rosenbergii is not tolerant of low temperatures. In late autumn and early winter, when the water temperature drops to 15°C, the pond must be drained and the prawns harvested for market in a timely manner. In this way, the Macrobrachium rosenbergii culture pond is actually only utilized for half a year (May to October). Mandarin fish do not completely stop feeding in winter and continue to grow, only with reduced feeding intensity and growth rate.
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How to prevent and treat filamentous bacterial disease in prawns? Methods farmers must see
(1) Pathogen The pathogens are Leucothrix mucor, Thiothrix (TAiothrix) and Flexibacter, etc. Leucothrix is filamentous, unbranched, slightly thicker at the base and slightly narrower at the tip, with a length of 5-500 microns or more. It reproduces by conidia and develops into new bacterial cells.
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How to prevent and treat shell ulcer disease (brown spot disease) in prawns
(1) Pathogen The bacteria that can be isolated from the lesions include Vibrio, Pseudomonas and Flavobacterium, etc. They are Gram-negative bacilli. (2) Symptoms ① On the body surface shell and appendages of diseased prawns there are dark brown or black spot-like ulcers, forming
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How to Increase Oriental River Prawn Yields in Mixed Shrimp-Crab Ponds
Mixed shrimp-crab culture is the main aquaculture model promoted under the fishery science and technology outreach program in Xiangcheng District. In recent years, while river crab prices have repeatedly been hit by the market, oriental river prawn prices have remained relatively firm. Therefore, while ensuring river crab growth, tapping the production potential of oriental river prawn has become a way to achieve
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How to feed pigs in pens? Practical feeding tips for you
Raw feeding and cooked feeding In rural areas, pig farmers have the habit of feeding cooked feed, believing that cooked feeding can reduce feed volume, soften crude fiber, allow pigs to eat more, and improve digestibility. Depending on the type of feed, raw feeding and cooked feeding differ. For green and coarse feed types
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Key Technical Points for Intensive Management of Oriental River Prawn in Autumn and Winter
Currently, it is the key season for stocking oriental river prawn in autumn and winter. Doing a good job in substrate, seed stock, bait, and water quality control, and effectively preventing disease and surfacing, are the top priorities for increasing production and income of oriental river prawn by the end of the year. Below, the relevant techniques for intensive culture of oriental river prawn are discussed from five aspects, for the reference of
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Detailed Explanation of Key Points for Freshwater Prawn Seedling Breeding Technology
Among prawns, the freshwater prawn is relatively well-liked by everyone, because the flesh of the freshwater prawn is more delicious, and the living environment of the freshwater prawn is relatively clean, so the freshwater prawn is also easier to clean when eaten, therefore the market demand for freshwater prawn is greater. Pond culture of freshwater prawn seedlings
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Can banana seeds be planted?
It turns out that wild banana seeds were large and could be planted, but after hybridization and selection, today's bananas have very small seeds and cannot be planted. So nowadays bananas are generally propagated by means of suckers, corms, division and tissue culture.
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How many raw materials are generally used in a water-soluble fertilizer formula?
Water-soluble fertilizer is a quick-acting fertilizer that dissolves rapidly in water and is quickly absorbed by plants. There are many kinds of formulas for it. How many raw materials are used in a water-soluble fertilizer formula? What are the commonly used raw materials? 1. How many raw materials are used in a water-soluble fertilizer formula Water-soluble fertilizer formulas generally use 3-10 raw materials, and
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What are the drawbacks of a fertilizer injection gun? An analysis of its disadvantages
If the fertilizer concentration is too high, a fertilizer injection gun can easily cause fertilizer burn to plants and water loss from the root system, resulting in a situation where the concentration of the soil solution is severely higher than the concentration of the cell sap in the plant's root cells, and the water in the cell sap flows into the soil, thereby causing the plant to wilt or even die from lack of water
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