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How are fish body disinfection solutions prepared? Introduction to common formulas
Soaking and disinfecting fish bodies with medicated solutions is an indispensable task when stocking fish fry and fingerlings, and is an effective measure for preventing fish diseases. Here are several common preparation and application methods for soaking disinfection solutions. 1. Bleaching powder solution: Prepare at a dosage of 1 gram of bleaching powder per 100 kg of clean water, that is, a bleaching powder solution with a concentration of 10 mg/kg. At a water temperature of 10-15°C, soak the fish for 15-30 minutes. It can kill various pathogenic bacteria on the fish body and has a good effect on preventing bacterial red-skin disease and rotten
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What feed is best for lactating sows? Recommended typical formulas
Lactating sow formula: corn 66.5%, soybean cake 10%, peanut cake 10%, wheat bran 8%, fish meal 3%, bone meal 1.3%, shell powder 0.7%, salt 0.5%, plus added multivitamins. Suitable for lactating sows 1-20 days after farrowing: corn 67%, wheat bran 8%, peanut cake 10%, soybean cake 12%, bone meal 1.7%, shell powder 0.8%, salt 0.5%, plus added oxytetracycline and multivitamins. Suitable for lactating sows 20-30 days after farrowing: corn 38%, soybean cake 2
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How to prevent deformed mushrooms in off-season shiitake cultivation
In off-season cultivation of shiitake (Lentinula edodes), deformed mushrooms often occur because production conditions are not properly regulated, which affects the commercial quality of the mushrooms and greatly reduces production returns. The main manifestations of deformed mushrooms and their control measures are as follows: 1. Small and thin caps: the caps are both thin and small, and even with a longer mushroom age they cannot grow large, and when eaten fresh they lack the special aroma of shiitake; the causes are, first, that color change was not completed, and fruiting was carried out when the bags were flower-patterned or white; second, that the substrate nutrients were obviously insufficient; third, that the growing temperature was too high. Prevention
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Detailed Explanation of Feed Formulas and Preparation Methods for Meat Dogs
The feed for meat dogs is made from a reasonable combination of animal-based feed, plant-based feed and mineral feed. The nutritional standards in the feed are: protein 17%-25%, fat 3%-7%, fiber 3%-4.5%, carbohydrates 44%-49.5%, calcium 1.5%-1.8%, phosphorus 1.1-1.2%, as well as trace amounts of copper, chlorine, potassium, magnesium, manganese, cobalt, zinc, iodine and vitamins, etc. Now, drawing on the experience of 12 dog-breeding specialized households including Yu Jianwei of Pulandian City, here is an introduction to the feed formula for meat dogs
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Fox Feed Formulation Methods and Technical Key Points
The fox is internationally recognized as one of the precious fur-bearing animals, and it is raised in many countries around the world. It is a carnivorous monogastric animal, and feed must be formulated according to its nutritional requirements, feeding standards, and locally available feed conditions. At the same time, attention should be paid to the complementary effects of proteins in various feeds, their physicochemical properties, and so on, in order to improve the nutritional value and utilization rate of the feed. (1) Daily feed for foxes 1. Animal-based feed: includes various small trash fish, livestock and poultry offal, and various wild small animals such as rats, earthworms, maggots, frogs, and so on. Fish meal can also be used.
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Detailed Explanation of Fish Nutritional Requirements and Formulation Key Points
1. Nutritional requirements of farmed fish: The optimal requirement levels of major components such as protein, fat, and carbohydrates in fish feed vary depending on technical factors such as fish species, feeding habits, different growth stages, water temperature, water quality, and feeding methods. 2. Formula for compound fish feed: Several major fish feed formulas are introduced below for readers' reference. (1) Compound feed for black carp: fish meal 35%, soybean cake 47.5%, barley 15%, yeast 1%, minerals 1.5%, plus added multivitamins, feed conversion ratio 2.26.
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How to formulate feed for pigs during lactation in a scientific way
Sows need large amounts of nutrients during lactation to support milk production. At peak lactation, a sow's milk production capacity exceeds the nutrients she takes in through feed and the nutrients lost through milk, so her body condition declines rapidly. Preparing high-quality, high-nutrient-density feed for lactating sows is the best way to resolve this contradiction. Feed Formula 1: Lactation Feed Formula 1 in Table 4-3 avoids as much as possible the use of bulky feeds such as alfalfa and rice hull bran. In the design of lactation feed formulas, unknown nutritional factors appear less important, and this formula uses high-energy feed corn and high-protein feeds such as fish meal and soybean meal as much as possible, so that the volume of the compound feed is reduced as much as possible and the nutrient concentration is increased as much as possible. The formula also uses synthetic amino acids to further fortify the first limiting amino acid and improve the utilization efficiency of feed protein. To ensure milk quality, the amounts of micro-ingredients in the formula remain unchanged from those in gestation feed. Compound feed produced with this formula, when used to feed high-yielding sows nursing about 10-15 piglets, can achieve very ideal lactation and nursing results.
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Detailed Explanation of Key Technical Points for Inducing Bud Formation and Shelf Fruiting of Shiitake Mushrooms
After the substrate bags change color, they enter the fruiting stage. The key management points during the bud induction period are: manually increase the temperature difference and the wet-dry difference, keep the temperature at 15-20°C and the humidity at 85%-90%, combine with ventilation, and apply temperature difference stimulation; after 3-5 days, mushroom buds will appear in large numbers. In winter, bud induction focuses mainly on heat preservation. The methods are: (1) Induce buds on indoor shelves: arrange the substrate bags neatly on the shelves with 2 cm between bags, place 1-2 stoves in the room, keep the temperature at 15-20°C, ventilate 3 times a day for about 1 hour each time, remove coal
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Causes of Deformed Shiitake Mushrooms in Off-Season Cultivation and Their Prevention and Control Methods
The edible mushroom industry is an important part of agriculture. Vigorously developing the edible mushroom industry can not only promote a virtuous cycle of the ecosystem, but also increase farmers' income and improve agricultural efficiency, achieving an organic unity of economic, ecological and social benefits. With the development of the edible mushroom industry, although shiitake production ranks only second, the economic benefits it delivers should rank first. How to improve shiitake yield and quality is of great significance to the many practitioners in the field. In off-season cultivation of shiitake, deformed mushrooms often appear due to inadequate production management
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How do you make oleander form a "three-fork, nine-top" crown?
Oleander has whorled leaves in threes and is a typical three-fork brancher, meaning that after each pruning, 3 new shoots grow from the stem nodes. People can take advantage of this branching trait to prune and shape it so that it becomes a "three-fork, nine-top" plant. When the main trunk grows to a certain height, pinch off the top, and 3 main branches will grow from the main trunk. When the main branches grow to about 20 cm or more, keep 20 cm on each and pinch off the tops again to make them sprout new shoots. On each main branch, keep another 3 branches, keep 20 cm to 30 cm on each branch, and cut off all the upper branches.
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