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Disease Occurrence Patterns and Prevention Methods for Pigs at Different Rearing Stages
Disease Occurrence in Pigs at Different Rearing Stages Incidence Rates of the Three Major Infectious Diseases of Pigs Hog cholera, swine erysipelas, and swine pasteurellosis are collectively known as the three major infectious diseases of pigs. In China, the overall mortality rate of affected pigs accounts for about 8% of the total reared population, and even in areas with relatively good prevention and control, pig mortality stands at 5%. Therefore, the level of pig disease prevention and treatment should be improved. If the overall pig mortality rate could be reduced by one percentage point each year, that would be equivalent to an additional 5 million pigs sent to market - what a tremendous amount of wealth that represents. According to relevant statistics, among the causes of pig deaths, those caused by
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What are the technical measures for autumn fingerling rearing
Autumn water temperatures generally range between 20 and 30°C, which is a good time for fish growth. If autumn is not used promptly to rear fingerlings into plump, strong, large-sized fingerlings, then when the cold winter arrives, most fingerlings will die because of weak constitution, and the average survival rate is often less than 60%. Therefore, strengthening autumn fingerling rearing is the top priority for farmers. The specific rearing measures are: disinfect and clear the pond, then transfer to a new pond. In the original pond used for rearing fingerlings, after several months of culture in spring and summer,
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Key Points of Broodstock Rearing Technology and Feeding Management Methods
1. Broodstock Rearing (1) Sexual Maturity The sexual maturity age of Wuchang bream (Megalobrama amblycephala) is 2 to 3 years, and the sexually mature body weight is above 0.5 kg. The spawning and breeding period is from May to June. (2) Male and Female Identification Sexually mature male fish have a large number of "nuptial tubercles" on the head, pectoral fins and caudal peduncle, with a rough feel when touched by hand; the abdomen is narrow and small, and when sexually mature, lightly pressing the testis area of the abdomen causes milky white semen to flow out; the first fin ray of the pectoral fin is thick and wavy-curved. Female fish have no "nuptial tubercles" or only a small number of tubercles on the eyes and back, and the abdomen is obviously
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Detailed Explanation of Key Technical Points for Cooperative Rearing of Young Silkworms
As the saying goes: "Rearing young silkworms well means 70% of the harvest." For this reason, special attention should be paid to the cooperative rearing of young silkworms. (1) Specific requirements and technical measures for cooperative rearing of young silkworms 1. The cooperative rearing room should use a dedicated young silkworm room. It needs good heat preservation and moisture retention performance, and easy ventilation. Strict disinfection should be carried out before rearing silkworms, implementing "three disinfections and one fumigation." "Three disinfections": the first round uses lime slurry; the second round uses bleaching powder; the third round uses disinfection cleaner; "one fumigation": use toxic powder fumigation smoke. 2. Heating is uniformly provided by heated bed warming. Because heated bed warming makes
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Detailed Explanation of Key Points for New Efficient Rearing Techniques for Late-Stage Silkworms
During the late-stage rearing period, especially the fifth instar, mulberry consumption accounts for about 85% of the entire rearing period, and a large amount of labor, such as removing excrement, feeding mulberry leaves, and picking ripe silkworms, is concentrated in the fifth instar. According to surveys, traditional silkworm tray rearing. Not only requires a large amount of labor, but also makes silkworm rearers extremely exhausted, with low labor efficiency. Using fixed rearing stands for late-stage silkworms with automatic mounting, without removing excrement, without picking ripe silkworms, and without moving trays up and down, mulberry feeding and mounting are convenient. Compared with traditional silkworm tray rearing, it can save more than 50% of labor and reduce labor intensity by 40%-50%. 1.
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How are common diseases of Silkie chickens diagnosed? With a detailed explanation of rearing methods
1. Newcastle disease (fowl pest) [Diagnosis] Sick chickens are listless, have reduced appetite, elevated body temperature, tremors, head tilted backward, opisthotonus, and circular movement, etc. Difficulty breathing, drooping wings, greenish watery droppings, death after 2 to 3 days, with a relatively high mortality rate. [Treatment] At 7 to 8 days of age, chicks are given Newcastle disease strain II vaccine by nasal or eye drops; at 28 days of age, the vaccine is administered once more; at 50 to 60 days of age, Newcastle disease strain I vaccine is injected intramuscularly. If the disease breaks out suddenly, Newcastle disease strain I vaccine should immediately be injected intramuscularly.
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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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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 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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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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