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Which breeds are best for meat-type ducks? Two recommended improved hybrid lines
1. Digao duck The Digao duck is a large hybrid-line meat duck developed by the Australian Digao company from introduced Pekin ducks. It was introduced into China in the 1980s. Parent-stock breeder ducks of this breed were raised at the Guangdong Overseas Chinese Farm. In 1987, the Nanhai County breeding duck farm in Guangdong Province introduced parent-stock Digao ducks, and the commercial ducks produced were well received. The Digao duck's appearance is similar to that of the Pekin duck. Ducklings have red-yellow feathers, which turn white after the juvenile plumage is molted. The head is large and slightly long, the neck is thick, the back is long and broad, the breast is wide, the body is slightly long, the breast muscles are full, and the tail is slightly raised, with 2-4 sex feathers
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Which type of inoculation tent works well for edible mushroom inoculation
1. Construction. The mosquito-net-style plastic inoculation tent is made from 3 m wide, 0.5 mm thick agricultural plastic film, and the specifications of the inoculation tent are 3 m long, 3 m wide and 3 m high. First cut a 13.5 m length of plastic film as the 3 m square enclosure wall of the inoculation tent, and take another 3 m length of film as the tent roof. Then use a plastic sealing machine or electric soldering iron to seal the two films along the edges, leave an overlapping joint line on one side of the tent as the door of the inoculation tent, and at the same time tie a rope at each of the 4 top corners of the inoculation tent for easy hanging. 2. Disinfection. Before use, first clean the inoculation
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Research progress on the mechanisms by which porcine circovirus type 2 infection causes immunosuppression
Circovirus infection is a newly discovered infectious disease. The disease has a relatively high infection rate in pigs and occurs widely throughout the world, having become one of the infectious diseases that seriously affect the development of the pig industry. Circovirus mainly attacks the pig immune system, interfering with and destroying the body's production and maintenance of immune antibodies against disease, resulting in reduced resistance and making pigs susceptible to secondary or concurrent other diseases. In recent years, scholars at home and abroad have conducted a great deal of research on the mechanisms by which porcine circovirus invades the immune system, and certain progress has been made in the virus replication mechanism, its effects on cytokines and lymph
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Which types of feed cannot be used alone to feed rabbits?
1. White radish leaves: White radish leaves contain very high levels of chlorophyll and a lot of water. If rabbits eat too much, they are prone to bloating, diarrhea, indigestion, and similar problems. Therefore, when feeding white radish leaves to rabbits, they should be mixed with other forage grasses, vegetable leaves, and so on. 2. Peanut vines: Peanut vines are rich in nutrients, and rabbits love to eat them, but because they contain a lot of crude fiber and water, excessive intake by rabbits can easily cause big belly disease, loose stools, indigestion, and similar problems, so they should not be fed alone in large amounts. In addition, when using peanut vines to feed rabbits, combining them with feeding the rabbits some onions, garlic heads
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There is a lot of know-how when it comes to choosing a sofa. Based on your living room, see which type suits your home.
If you are decorating a new house, there really are many issues to consider. First is the style of the home, and second is the choice of all kinds of household items. Actually, the most important thing about a home is warmth and comfort. After all, it is the place you go back to every day to rest,...
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The deep reasons why Fuding white tea is worth drinking: which type are you?
Compared with rock tea, Pu'er, and Tieguanyin, white tea does not excel in strength and thickness. It has an authentic, original character, a fresh and elegantly light briskness, and a delicate fragrance like flowers falling after rain. Yes, it is like a girl from the countryside, pure, simple, and naturally formed.
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White tea can detoxify the body. Which type of white tea suits you?
Tea is the "antidote" to various toxins, and different people should drink different teas. Did you know? Tea is also the cheapest "antidote" to toxins such as alcohol, nicotine, exhaust fumes and radiation. There are many kinds of tea, including white tea, and you can choose according to your occupation and...
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Which types of pesticides are resistant to rain washing?
When should fruit trees not be sprayed with pesticides? Please advise: to improve fruit yield and quality, reduce the number of pesticide applications, and extend the productive life of the trees, the key is to master the following critical periods in pest and disease control. The first is the period when buds clearly swell, that is, the bare-branch spray. During this period, spray a high-concentration fungicide plus insect...
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Which type of flush fertilizer is best for greenhouse planting? A full analysis of purchasing key points
Which type of flush fertilizer is good for greenhouse planting? Please explain that greenhouses should pay attention to choosing microbial flush fertilizers or fertilizers such as humic acid and fully water-soluble fertilizers, which both alleviate soil salinization and help raise ground temperature. Choose biological fertilizers. Biological fertilizers can release the nitrogen, phosphorus and potassium fixed in the soil and promote the improvement of soil fertility...
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Which type of swine pneumonia vaccine is best for vaccinating sows?
Which type of swine pneumonia vaccine is best for sows?
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