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A detailed explanation of the various filtration equipment used in koi farming
A complete aquarium needs life-support systems for aquatic animals and plants, mainly including a filtration system, lighting system, temperature control system, and aeration system. Disinfection system...
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Qitai Uses Embryo Transfer Technology to Breed New Red Deer Varieties
Applying embryo transfer technology to the breeding of Tianshan red deer will cause a sensation in China's wildlife conservation community. On December 18, 2003, **Ma Mingkui, director of the Qitai Forest Farm, pointed to the red deer at the red deer breeding farm and told reporters: "No. 366, No. 66, and No. 399, these 3 red deer are all pregnant." This work began in September 2003, and a total of 13 red deer underwent embryo transfer. They are all red deer from the Qitai Forest Farm red deer breeding farm. This farm is also China's only Tianshan red deer germplasm protection and breeding base. Tarim
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The Complete Guide to Silkworm Breeds: Get to Know Common Silkworm Varieties
Silkworm breeds are broadly divided into three categories: 1. Univoltine silkworm breeds. Depending on the breed, the silkworm (Bombyx mori) produces only one generation within a year and then lays diapause eggs; these are called univoltine silkworm breeds. Such breeds develop slowly, take many days to complete their life cycle, consume a large amount of mulberry leaves during the larval stage, and have larger bodies and cocoons with the highest silk yield, but they are physically weak and not suited to hot, humid climatic conditions, making them suitable for rearing in temperate regions. 2. Bivoltine silkworm breeds. Those that produce two generations within a year, that is, the first generation lays non-diapause eggs and the second generation lays diapause eggs, are called bivoltine silkworm breeds. Such breeds
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What are the green and eco-friendly fishery drugs? Introduction to several commonly used varieties
Quicklime, table salt, and the like, although not specialized fishery drugs, are effective for preventing and treating aquatic diseases, and they pose no threat to the environment, with no drug residue problems. Quicklime: regularly splashing quicklime into the aquaculture water body can not only reduce the occurrence of many diseases, but also provide the calcium element essential for aquaculture organisms, which is especially important for crustacean aquaculture. Method of use: choose quicklime that has not weathered; for pond clearing and disinfection use 150-200 kg per mu; for disease prevention and treatment, generally 5-9, use once about every 20 days, for a water depth of 1
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Classification of Koi Varieties and Detailed Explanation of Their Main Characteristics
Through continuous crossbreeding, improvement and selective breeding, koi have now been developed into more than one hundred varieties. Japanese koi are mainly divided into 13 categories according to their colors, markings and scale distribution. 1. Kohaku koi: the base color of the body surface is silvery white, inlaid with changing red markings. 2. Taisho Sanke koi: the base color of the fish body is snow white, with crimson and jet-black markings emerging. 3. Utsuri koi: the fish body has black as its base color, with triangular markings that are either white, red or yellow. 4. Showa Sanke koi: the fish body
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What varieties of freshwater angelfish are there? A detailed guide to common species classification
1. Common Angelfish Scientific name: pterophyllum scalare English name: Angelfish Native to the waters from the central Amazon River to the Peru and Ecuador region, it is the original species from which today's general artificially improved angelfish breeds are derived. In its scientific name, pterophyllum means "as soft and light as a feather," while scalare describes its body stripes as being like a ladder. Apart from breeding, there are no obvious external sexual characteristics; the male's external genital organ is pointed, while the female's is
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Qitai uses embryo transfer technology to breed a new variety of red deer
Applying embryo transfer technology to the breeding of Tianshan red deer will cause a stir in China's wildlife conservation community. On December 18, 2003, **Ma Mingkui, director of the Qitai Forestry Farm, pointed to the red deer at the deer breeding farm and told reporters: "No. 366, No. 66, and No. 399, these 3 red deer are all pregnant." This work began in September 2003, and a total of 13 red deer underwent embryo transfer. They are all red deer from the Qitai Forestry Farm's red deer breeding farm. This farm is also China's only Tianshan red deer germplasm protection and breeding base. Tarim
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New Silkworm Variety Officially Passes Variety Approval
The new silkworm variety "Qiantang × Xinchao", bred by the Sericulture Research Institute of the Zhejiang Academy of Agricultural Sciences (postcode: 310021, tel: 0571-86404188), recently passed variety approval in Zhejiang Province. For this variety, the pupation rate of silkworms from the start of the fourth instar is 94.9%, the cocoon yield per 10,000 larvae is 3.9 kg, the reelable silk length is 755 m, the neatness is 95.8 points, the practical hatching rate is 98.7%, and the silk filament size is 2.5 denier. The average cocoon yield per box of silkworm eggs is 41.3 kg, and the output value per sheet of silkworm eggs is 974 yuan.(
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Variety Characteristics and Ornamental Value of the Golden-edged Tulip Tree
Golden-edged Tulip Tree Liriodendron 'Aureomarginatum', Magnoliaceae, Liriodendron. Introduction source: the Netherlands. Deciduous large tree, height can reach over 20 m, a horticultural variety of the North American tulip tree (Liriodendron tulipifera). Spring leaves have golden-yellow margins, gradually turning green by mid-June; flowers pale yellow. Flowering in June, flower shape like a tulip. Sun-loving, not tolerant of waterlogging, suitable for planting in deep soil. Generally grown as a street tree or as a specimen tree.
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Detailed Introduction to the Silkworm Variety Yuefeng No. 3
Approval number: Yue Shen Can 2006002. Breeding units: Guangdong Province Sericulture Technology Extension Center, Department of Sericulture Science, College of Animal Science, South China Agricultural University. Variety source: Wu/Xuan//28/32. Characteristics: A bivoltine four-way hybrid variety with polyvoltine bloodlines. It has the characteristics of a strong constitution, resistance to high temperature and high humidity, resistance to fluorine and air pollution, ease of rearing, high yield, excellent cocoon silk quality, and a high silkworm egg multiplication coefficient. Hatching is uniform and synchronized; the newly hatched larvae of the orthogonal cross are relatively quiet, while those of the reciprocal cross are more prone to wandering. During the young silkworm stage there is dense
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