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How to prevent fetal resorption in sows? Introduction to practical methods
Embryos die early during development and are absorbed by the sow, commonly known as fetal resorption. It is one of the important causes of low farrowing rates, and this problem can be solved through the following methods. 1. Strengthen feeding management: 3 to 14 days before mating, increase protein feed and energy feed, and add minerals and vitamins at the same time, so that they enter the best mating state more quickly; for empty sows in poor body condition, the "flushing" feeding method before mating can be adopted, that is, strengthen
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Introduction to the Characteristics and Farming Techniques of the Jingxi Large Hemp Duck Breed
Origin (or distribution): Jingxi, Debao, Napo and other counties in Guangxi. Main characteristics: large body size, rectangular trunk, and plumage colors divided into three types, namely the dark hemp type (horse duck), the light hemp type (phoenix duck) and the black-and-white type (crow duck). Head plumage colors are respectively dark green, finely speckled black-and-white, and bright green; shanks and webs are respectively orange-red or brown, orange-yellow, and dark brown. Birth weight is 48 grams; adult body weight is 2.7 kg for males and 2.5 kg for females. Slaughter measurements: at 90 days of age, male ducks have a semi-eviscerated rate of 84.0
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Detailed Introduction to the Rice Variety Shengtai 1
Shengtai 1 is a second-generation high-quality, super-high-yield, disease-resistant new variety bred by the Rice Research Institute of the Guangdong Academy of Agricultural Sciences through crossing the super-high-yield variety Shengyou 2 as the female parent with the Thai high-quality soft rice variety Taiyin 1. Characteristics: Shengtai 1 has thick, upright leaves of a jade-green color, early emergence and early growth in the early stage, green branches and waxy sheaths in the late stage, good ripening color, ideal stem and leaf morphology and structure, a well-developed root system, fast elongation speed, deep and extensive distribution, strong vigor, no premature senescence, strong fertilizer tolerance and lodging resistance, and a good response to increased fertilization. It has relatively strong stress resistance and disease resistance, and strong cold resistance at the seedling stage in the early crop;
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Introduction to the Characteristics of the Shengli Black Glutinous Rice Variety
This variety was developed by the Downhole Agriculture, Industry and Commerce Company of Shengli Oilfield and the Dongying City Seed Management Station through hybrid systematic selection and breeding, using China 91 as the female parent and Xiangxuenuo as the male parent. Characteristics: In the Yellow River Delta region, the growth period of this variety is about 165 days; plant height is about 1 m, plant type is compact, leaf color is dark green, and the flag leaf is relatively long and large; the tip of the coleoptile, ligule, leaf tip and internode below the panicle are all purple. As for panicle color, it is green at the beginning of heading, turns purple after grain filling, and the glume is light brown after maturity; panicle length is 2O-23 cm, grains per panicle are 110
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Introduction to the Characteristics of the Rice Variety Shaoxian No.1
Shaoxian No.1 (formerly named Shao 93-9) is a new medium-maturing, early-leaning early indica variety bred by the Shaoxing City Academy of Agricultural Sciences in Zhejiang Province through crossing Yueguo No.1 with Huilun 422, followed by backcrossing with Yueguo No.1. Characteristics: Shaoxian No.1 is medium-maturing and early-leaning, with a whole growth period 3 d earlier than the control variety Zhe 852; it has wide adaptability and is suitable for direct seeding or seedling-throwing light cultivation as early and late season rice in double-cropping rice areas of Zhejiang Province. It has medium tillering, a compact plant type, and strong cold tolerance, especially during the heading and flowering period when it can resist the influence of adverse climatic factors.
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Introduction to the Rice Variety Shaonuo 9714
Characteristics: This variety is a japonica-type conventional glutinous rice. When grown as a single-season late rice in the middle and lower reaches of the Yangtze River, its average whole growth period is 147.7 days, 2.1 days later maturing than the control Xiushui 63. Plant height is 96 cm, the plant type is moderate, the plant is relatively short, the population is uniform, the flag leaves are upright, growth is vigorous, and color change at maturity is good. The number of effective panicles per mu is 197,000, panicle length is 19.4 cm, total grains per panicle is 113, seed-setting rate is 90.1%, and 1000-grain weight is 27.7 g. Resistance: rice blast grade 7, bacterial leaf blight grade 3, brown planthopper grade 9
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Detailed introduction to the rice variety Shaonuo 86
Breeding institution: Shaoxing Municipal Institute of Agricultural Sciences, Zhejiang Province. Approval status: Recognized by the Zhejiang Provincial Crop Variety Approval Committee in 1993. Variety registration number: GS01004-1993. Variety source: Ainuo 21/Xianghu 25. Characteristics: A medium-maturity late japonica glutinous-type variety. Compact plant type, dark green leaf color, moderate to weak tillering. Plant height 90-95 cm, effective panicles per mu 250,000-300,000, dense-panicle type, panicle length about 15 cm, about 80 grains per panicle, 1000-grain weight 26-27 g, brown rice
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Shanyou Duoxi No. 1 Rice Variety Introduction
Breeding unit: Neijiang Agricultural Science Research Institute, Sichuan Province. Approval status: approved by the Sichuan Provincial Crop Variety Approval Committee in 1993, by the Guizhou Provincial Crop Variety Approval Committee in 1995, by the Fujian Provincial Crop Variety Approval Committee in 1996, and by the National Crop Variety Approval Committee in l998. Variety approval number: Guoshen Dao 980010. Variety source: Zhenshan 97A X Duoxi No. 1. Characteristics: a medium indica late-maturing three-line hybrid rice combination. Plant height about 110 cm, per mu
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Introduction to the Characteristics and Traits of the Rice Variety Shanyou 94-4
(1) Variety source: Shanyou 94-4 is a medium indica late-maturing hybrid rice combination developed by the Neijiang Hybrid Rice Science and Technology Development Center by crossing the self-bred restorer line 94-4 with Zhenshan 97A. (2) Characteristics and traits: The whole growth period of this variety is 146 days, maturing at the same time as Shanyou 63. This variety has a compact plant type and good luxuriance, 108.2 cm, panicle length 23.7 cm, effective panicles per mu 182,200, grains per panicle 137.2, seed setting rate 82.7%, 1000-grain weight 26.9 g. Brown rice rate 82%,
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Introduction to the Rice Variety Shanyou 94-11
(1) Variety source: This is a medium-indica late-maturing combination developed by the Neijiang Hybrid Rice Science and Technology Development Center, using Zhenshan 97A as the female parent and the self-bred restorer line 94-11 as the male parent. (2) Characteristics: The full growth period is 145.6 days, 0.8 days longer than Shanyou 63. The plant height is 110-115 cm, with 140-160 grains per panicle, a seed-setting rate of 85-90%, and a 1000-grain weight of 27.5 g. The leaf color is relatively dark, and the tillering ability is weak. The plant type is moderate, the flag leaf is long and straight, the panicle layer is neat, the color turns well at maturity, the stem is hard and resistant to lodging, and the grain quality is good. (3) Yield table
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