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Comprehensive Introduction to Breeding Techniques for Colored Foxes and Colored Raccoon Dogs
Crossbreeding between the Vulpes genus and the Alopex genus Crossbreeding between the Vulpes genus and the Alopex genus has attracted increasing attention in fox pelt production and sales. This is mainly because the fur quality of the hybrid offspring is better than that of both parents; it overcomes the shortcomings of the silver fox's long and coarse guard hairs as well as the Arctic fox's short, fine guard hairs and easily matted underfur. The hybrid fox pelt has abundant underfur, even guard hairs, and vivid coloration, giving it higher commercial value. 1. Production of hybrid foxes The production of hybrid foxes is currently mostly carried out by means of artificial insemination
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Breeding and Promotion of the High-Temperature Mushroom 'Xiagu 93'
In December 2002, the provincial key science and technology project "Breeding and Promotion of the High-Temperature Mushroom 'Xiagu 93'", led by the Institute of Horticulture of the Zhejiang Academy of Agricultural Sciences, passed the achievement appraisal organized by the Provincial Department of Science and Technology. Summer is the off-season for the cultivation and production of various edible fungi in China, and the supply of fresh mushrooms on the market is interrupted. Therefore, carrying out the breeding of high-temperature mushrooms and establishing a complete set of supporting comprehensive cultivation techniques so that mushrooms can be grown for more than two seasons a year in China is of great significance for enriching China's mushroom varieties, improving mushroom quality, and meeting market demand for mushrooms. Through more than ten years of
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Recommended meat snake species: These meat snakes are suitable for breeding
Did you know how many species of snakes exist in our country? According to statistics, there are as many as 173 species of snakes in China, of which 48 are venomous and the rest are non-venomous. Meat snakes refer to non-venomous snakes that are large in size, grow quickly, and are commonly eaten or used medicinally. To help snake farmers become familiar with and understand their living and production performance, the following introduces several meat snake species that are large in size, grow quickly, develop well, lay many eggs (or give birth to many young), have tender meat, and offer good breeding returns. The black-browed ratsnake is commonly known as the home snake, yellow long worm, cauliflower snake, three-stripe line, broad snake, etc. Adult snakes are about 1
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Rice cancer has met its nemesis: breeding of a disease-resistant new variety succeeds
Since the beginning of this century, rice stripe virus disease has continued to break out over large areas, in severe cases even causing rice farmers to lose their entire harvest. Rice stripe virus disease has been regarded as the "cancer" of rice. "Wuyujing 3", long recognized by the market as the main rice variety with the best taste and quality in Jiangsu Province and surrounding areas, has seen its planting area plummet in recent years because it is highly susceptible to rice stripe virus disease. Some stripe virus-resistant varieties either have shortcomings in yield and yield stability, or have not been fully recognized by the market for their rice quality. Rice farmers
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Giant embryo rice enters the breeding method stage, blood pressure-lowering rice expected to reach the market
Red rice with anti-atherosclerosis properties and giant embryo rice with blood pressure-lowering functions have entered the laboratory breeding stage and are expected to reach people's dining tables in the near future. This is the news the reporter obtained yesterday at the opening ceremony of the "2007 Shanghai Science and Technology to the Countryside" series of service activities. It is reported that "high-protein rice breeding," undertaken by the Plant Molecular Genetics Laboratory of Shanghai Normal University, has been listed as a key project of the Municipal Science and Technology Commission. According to project leader Professor Li Jianyue of Shanghai Normal University, cultivating high-protein rice is of great significance in many respects.
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Giant embryo rice has entered the laboratory breeding stage
Red rice with anti-atherosclerosis properties and giant embryo rice with blood pressure-lowering functions have entered the laboratory breeding stage and are expected to reach consumers' dining tables in the near future. The "high-protein rice breeding" project undertaken by the Plant Molecular Genetics Laboratory of Shanghai Normal University has been listed as a key project of the Shanghai Municipal Science and Technology Commission. Red rice is a natural colored rice that has anti-atherosclerosis properties and can enhance the body's antioxidant capacity. It is rich in bioactive substances such as carotene, flavonoids and alkaloids, as well as mineral elements including iron, zinc and calcium. Scientific researchers have combined high-protein
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How to Select Breeding Softshell Turtles? Master the Selection Techniques to Choose High-Quality Breeding Softshell Turtles
Breeding softshell turtles refers to softshell turtles used for reproduction. Under natural conditions, due to the influence of climate and the harm caused by natural enemies, softshell turtles not only grow and develop slowly, but also have a low survival rate. In addition, after years of indiscriminate hunting and capture, wild resources are almost on the verge of extinction. Therefore, using artificial methods to intensify the cultivation of breeding softshell turtles is the main key to solving the source of softshell turtle seed and developing softshell turtle farming production. The selection of breeding softshell turtles should pay attention to the following issues. 1. Age: In the Jiangsu area, generally female and male softshell turtles aged over 3 years, that is, weighing more than 0.25 kg, will engage in mating behavior,
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Detailed Explanation of Key Techniques for Broodstock Breeding in Icefish Aquaculture
1. Source of broodstock. Sexually mature individuals caught during the breeding season of large icefish can be used for artificial breeding; individuals raised to sexual maturity can be used for artificial breeding; individuals that have not reached sexual maturity must not be used for artificial breeding. 2. Capture of broodstock. The capture of large icefish should be carried out during the peak spawning period; in areas north of the Yellow River, capture can begin in early December, and in areas south of the Yellow River, capture can begin in mid-December. The capture nets can be gill nets (mesh size 2a of 1.5-2.4 cm) or under-ice seine nets.
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Detailed Explanation of Key Points for Freshwater Shrimp Breeding Technology in Crab Ponds
The freshwater shrimp, scientifically named Macrobrachium nipponense, is also known as the Oriental river prawn. The artificial breeding technology for freshwater shrimp fry is as follows: 1. Selection and keeping of parent shrimp. Parent shrimp selected for artificial breeding are required to have a standard body shape, pure body color, be plump and healthy, free from disease and injury, and have well-developed gonads. Female shrimp should have a body length of over 6 cm, and male shrimp should be somewhat larger. They can be selected from large shrimp caught in the wild or from artificially cultured ponds. The selected parent shrimp must be kept in a dedicated pond. The parent shrimp pond should have an area of 1-3 mu and a water depth of about 1 m. Parent shrimp
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Detailed Explanation of Natural Breeding Methods and Technical Key Points for Koi
Selecting excellent broodstock is the key to successful koi breeding. To use natural breeding, the first step is to select broodstock that meet the standards. In the north, koi previously kept as breeding stock are moved to outdoor ponds in mid-to-late March after spending the winter indoors. At this time, broodstock should be further carefully selected to obtain excellent offspring. (1) Selection of broodstock: Broodstock used for breeding should generally have the following: a strong physique, bright and crystalline coloration, pure lineage, distinct breed characteristics, clearly defined color patch margins with no blurred edges, no blemishes, smooth and neat scales,
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