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What is the optimal protein level in fish feed?
Protein is the main nutritional indicator of compound feed for fish, and the protein level directly affects the intrinsic quality of the fish feed. Different fish species and different growth stages have different optimal protein requirements. Too high a protein content not only wastes feed protein resources, but also increases the pressure of pond water quality management. Too low a protein content, on the one hand, causes slow fish growth and poor disease resistance, and on the other hand, delays production timing. Therefore, mastering the optimal protein level of fish feed is of great
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Gui Green No. 1: Introduction to a national-level improved tea tree variety with Guangxi's independent intellectual property rights
Tea is an important economic crop in China, and in particular one of the pillar industries for poverty alleviation and prosperity in the mountainous areas of Guangxi. With the rise of organic tea (green food) production, some varieties with resistance to pests and diseases and strong adaptability have received attention. Varieties determine characteristics such as the sprouting period of tea trees, processing suitability, quality traits and resistance. To develop tea production, tea products must be early to market, distinctive, of superior quality and favorable in price to be in a position to seize the market. Therefore, to make Guangxi's tea industry strong and large, we must start from the "source" - adopting superior
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New high-quality, high-yield rice variety from Jiangxi reaches domestic leading level
The research project "Breeding and Demonstration of the New High-Quality, High-Yield Rice Variety Ganwanxian No. 36," led by the Department of Life Sciences at Shangrao Normal University, recently passed an achievement appraisal organized by the Jiangxi Provincial Department of Science and Technology. After carefully reviewing the relevant technical materials, agricultural experts from the Jiangxi Academy of Agricultural Sciences, the Department of Agriculture, Jiangxi Agricultural University, the Shangrao Municipal Agriculture Bureau and other departments concluded that the project has reached the domestic leading level in breeding first-grade high-quality indica rice varieties. "Ganwanxian No. 36" has a moderate plant type, relatively thick and sturdy stems, and strong tillering ability.
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How to scientifically improve the nutritional level of pigs
1. Nutrition of gilts. The nutrition of gilts and the related nutritional reserves are important factors affecting the lifelong performance of sows, and their nutritional level should ensure the body's needs during the reproductive period after maturity. Starting from a body weight of 45 kg, the diet level should be 0.1% higher than the usual growing-finishing pig diet to enhance the skeletal development of gilts. After gilts reach about 150 days of age and enter the replacement gilt herd, their growth should be controlled, with restricted feeding (2.3-2.8 kg/day) of a medium-energy, high-protein diet to reduce
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Two new potato varieties approved at national level
Zhongshu No. 7 Approval number: Guoshen Shu 2006001 Breeding institution: Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences Variety source: Bred by sexual hybridization and systematic selection from Zhongshu No. 2 x Jizhangshu No. 4 Characteristics: Early-maturing variety, 64 days from emergence to maturity. Plant type upright, strong growth vigor, plant height 50 cm, leaves dark green, stems purple, corolla purplish red, tubers round, light yellow skin, creamy white flesh, skin smooth, eyes shallow, stolons short, tubers set in a concentrated manner, marketable tuber rate 61.7%. Inoculation identification: moderately resistant to mild mosaic
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If the minimum purchase price for early rice is abolished, prices may fall back to levels of 10 years ago, just like corn
If the minimum purchase price is abolished, early rice prices could fall back to levels of 10 years ago, just like corn
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Pig prices fall below 9 yuan before Spring Festival, expected to mainly fluctuate at a high level
Pig prices fall below 9 yuan before Spring Festival, expected to mainly fluctuate at a high level
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How can the low level of agricultural mechanization in the hilly and mountainous areas of southern China be overcome?
How to break the deadlock of the relatively low level of agricultural mechanization in the hilly and mountainous areas of southern China
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Farmer land withdrawal exploration still needs more top-level design
Farmer "land withdrawal" exploration still needs more top-level design
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Fu Chenghua, a national-level major grain grower, turns barren fields into a treasure trove
Fu Chenghua, a national-level major grain grower, turns barren fields into a treasure trove
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