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Techniques for rearing summer fry fish: stock one main fish species, do not introduce carp, and combine feed with fertiliser for intensive feeding
Summer fry fish are small and delicate, with a weak ability to withstand adverse environments. In addition, at this stage the summer fry undergo a dietary transition, and their digestive system structure and function are not yet fully developed, so their digestive capacity is poor. If rearing methods are improper, mass mortality will occur. Through experiments, the author found that adopting the following rearing methods can significantly increase the survival rate and rearing efficiency of summer fry. Scientific stocking and rational matching: the traditional rearing method is mainly polyculture of multiple species. However, from production practice, because fish have different feeding habits, this kind of rearing
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Rabbit Rearing Methods and Breeding Techniques
Size: total body length 40-45cm. Origin: native to south of central Europe. Diet: herbivorous. Although they are all commonly called rabbits, what general pet shops sell are domestic rabbits improved from wild European rabbits through selective breeding. There are many breeds; the most familiar to the public is the all-white Japanese White breed. In recent years, rabbits of other coat colors have gradually increased on the market and are also very popular. There is also a breed called the mini rabbit; in fact, it is not a true mini rabbit, but a cross between small rabbits such as the Dutch breed and the Belgian breed and the white Japanese rabbit.
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Technical measures to prevent the production of inferior cocoons in silkworm rearing
In silkworm rearing, selecting high-yield and high-quality cocoons is the key to a bountiful harvest. During the silkworm feeding process, many factors can produce large numbers of inferior cocoons and reduce @#@250@#@ benefits. In order to avoid producing inferior cocoons, increasing the rate of good cocoons and reducing the rate of inferior cocoons is an important step in further increasing the economic benefits of silkworm farmers. The relevant technical points for preventing inferior cocoons are briefly introduced as follows: 1 Strengthen feeding management 1.1 Rear young silkworms under plastic film mulching, which both keeps mulberry leaves fresh and encourages the larvae to feed readily, helping the larvae to eat their fill of good mulberry leaves and improve
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Queen bee rearing method: rearing queens using natural supersedure queen cells
Select excellent colonies with old queens as breeding stock; when they build supersedure queen cells, select and retain them. Move the comb with natural queen cells up into the super, place unsealed brood combs on both sides, insert a queen excluder between the brood box and the super, confine the queen to the brood box, and record the emergence date of the queen from each natural queen cell. Natural supersedure queen cells can be taken successively from this old-queen colony; queens from natural supersedure allow the excellent traits of the stock to be passed on more stably. When this natural supersedure occurs, the colony generally builds only a few queen cells, and the reared queens are of relatively good quality
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Methods and Technical Key Points for Clearing and Preparing Broodstock Rearing Ponds
1. Renovating the pond: Drain the pond water, remove excess silt, level the pond bottom, repair the pond bottom walls and the water inlet and outlet, and clear tall plants from the pond bottom and edges. After exposing the pond to sunlight for several days, fill it with fresh water. 2. Common pond-clearing methods include (1) Quicklime pond clearing. One method is dry quicklime pond clearing, that is, first drain the pond water, leaving only 6-10 cm of water on the pond bottom, dig several small pits around the pond bottom, place quicklime separately into the small pits, add water to dissolve it, and before it cools, splash it evenly over the pond. On the 2nd day, an iron
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Detailed Explanation of New Technology for Circular Pig and Chicken Rearing
With the arrival of the era of low profits in animal husbandry, raising only one type of livestock or poultry often fails to yield good returns due to various reasons such as market and cost factors. The new technology of efficient circular pig and chicken rearing is a practical technique particularly suitable for rural farmers. It is introduced as follows: Use lactic acid fermentation of chicken manure to feed pigs. There are many methods for feeding chicken manure to pigs, such as the sun-drying method, fresh-feeding method, and conventional fermentation method, but it is best to use lactic acid-fermented chicken manure. This is because this method can turn chicken manure into high-quality pig feed with good palatability. The fermentation method is: first
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Detailed Explanation of Breeding Rooster Rearing Management and Artificial Insemination Technical Procedures
Rearing Management and Artificial Insemination Technical Procedures for Breeding Roosters
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Rearing Methods and Management Key Points for Male Silkworm Larvae
I. New Hybrid Male Silkworm Varieties (1) Variety characteristics. The new autumn-rearing male silkworm variety Qiuhua x Ping 30, bred by the Sericulture Research Institute of the Zhejiang Academy of Agricultural Sciences, has the advantages of a strong constitution, uniform molting and rising in each instar, and being easy to rear. The number of silkworm larvae per gram is about 2310, the 5th instar lasts 6 days and 18 hours, the whole instar lasts 22 and a half days, the two-day hatching rate is 49.34%, the silk length is about 1240 m, the cocoon shape is oval, large and uniform, the cocoon color is pure white, and the cocoon shell rate and silk yield are high. (2) Key points of rearing technology. For gathering newly hatched silkworms, light exposure can be
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Methods of Queen Rearing by Larva Transfer and Key Management Points
(1) Tools for queen rearing by larva transfer The tools used for queen rearing by larva transfer include a larva transfer needle, a queen rearing frame, a wax bowl stick and wax bowls, a towel, a washbasin, royal jelly, etc. The larva transfer needle is a tool used to transfer young larvae into queen cell cups. It can be made from thick copper wire or a goose feather quill, with one end shaped into a flat, thin tongue and the other into a curved spoon shape. A larva transfer needle with a spring is convenient to use. The queen rearing frame is a frame for holding queen cells. It can be modified from a standard frame, with the top and bottom bars and side panels of equal width, about 13 mm. Inside the frame, 3 slats 10 mm wide are installed horizontally at equal distances. The wax bowl stick is dipped
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Rearing and Management Techniques for Growing Ducks (31-20 days of age)
The management goal for growing ducks is to develop a robust and well-proportioned body shape. 1. Increase exercise: Every day, drive the ducks to walk slowly several laps on the exercise yard, or herd them slowly outside for grazing, to strengthen their physique; people should handle the ducks more to build their boldness, so that when they enter the laying period they will not be easily frightened. 2. Feeding of growing ducks: Growing ducks are at the stage of growing frame and muscle. The nutritional principle for the rearing stage is: better low than high; the feed principle is: better coarse than fine. Concentrate feed
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