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What are the pathological changes of aflatoxin poisoning in pigs?
In acute cases, anemia and hemorrhage occur, with massive bleeding in the thoracic and abdominal cavities, and petechial spots often on the serous membrane surfaces. Hemorrhage occurs in the subcutaneous muscles in front of the thigh and under the scapula. The liver is enlarged with bleeding points. In the part of the liver adjacent to the serous membrane there are pinpoint or ecchymotic hemorrhages, obvious hemorrhages are common on the epicardium and endocardium, and hemorrhages are often present throughout the body muscles. In chronic cases, there is proliferation and sclerosis of the liver bile ducts, yellow fatty degeneration of the liver, white spots or necrotic lesions on the liver surface, and effusion in the thoracic and abdominal cavities. The renal cavity is pale and swollen. The systemic lymph nodes are congested and edematous.
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Key Production Technology Points for Flat-Bed Cultivation and Successive-Generation Cultivation of the Elm Oyster Mushroom (Pleurotus citrinopileatus)
The elm oyster mushroom (Pleurotus citrinopileatus), due to its strong growth vigor, good stress resistance, ease of cultivation and promotion, and high biological efficiency, has very broad development prospects in Shandong Province. Shandong Province is a major cotton-growing province, and in recent years the cotton planting area has risen sharply, with cottonseed hulls being of high quality and low price. The following is an introduction to the production technology for cultivating the elm oyster mushroom using cottonseed hulls as the main substrate, employing fermented substrate flat-bed cultivation and successive-generation cultivation. I. Spawn Production 1. Spawn Selection Select strains with strong growth vigor, good stress resistance, high and stable yields, and a broad temperature adaptation range, such as Yuhuang-1 and Yuhuang-2. The mycelial growth temperature is 5-35 degrees, with 20-30 degrees being suitable; the fruiting body differentiation and growth temperature is 10-30 degrees, with the optimum temperature being 8-25 degrees. It is tolerant to carbon dioxide. Under conventional cultivation, the biological yield can reach 150%, and under successive-generation cultivation, the conversion rate can reach 200%. It is an excellent strain suitable for cultivation in Shandong Province.
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How are flat peach varieties? Introduction to excellent flat peach varieties
Flat peach 1. Zaolu flat peach variety characteristics: The tree posture is open, and the tree vigor is moderate. All types of fruiting branches can bear fruit, mostly compound flower buds, the starting node of flower buds is the 1st to 2nd node, and it is high-yielding. The flower is rose type, with a large amount of pollen. In the Zhengzhou area of Henan, the fruit ripens on June 10, and the fruit development period is 67 days. The chilling requirement is 750 hours. The fruit is medium-large, with an average single fruit weight of 68 grams and a maximum of 95 grams. The fruit shape is flat, the fruit apex is sunken, and the suture line is shallow; the base color of the peel is creamy yellow, 50% of the fruit surface is covered with a red blush, the fuzz is medium, and it is easy to peel
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Introduction to the Performance Characteristics of the Long-Board Type Flat Tea Frying-Drying Machine
The long-board type flat tea frying-drying machine first appeared in the Xinchang tea area in 2000, and its manufacturers are mainly distributed in Xinchang and Pan'an counties. At present, this tea machine has been widely used in some main Longjing tea producing areas of this province. The commonly used models of the long-board type flat tea frying-drying machine are mainly composed of a long semicircular tea frying pan, a long tea-leaf stirring board, a transmission mechanism, a heat source device, a temperature control instrument and a frame, etc. When this machine is used for Longjing tea frying, like manual frying, it is also divided into two main processes: the green-frying pan and the final-firing pan. For frying the green-frying pan, when the pan temperature reaches
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Introduction to the New Flat Peach Variety 'Ruipan 20'
The extremely late-ripening white-fleshed flat peach variety 'Ruipan 20', bred by the Institute of Forestry and Pomology of the Beijing Academy of Agriculture and Forestry Sciences, recently passed variety approval in Beijing. This variety can bear fruit on all types of fruiting branches, mainly on long and medium fruiting branches, and has a high natural fruit-setting rate. The fruit development period is about 160 days, and the annual growth period is about 208 days. The average single fruit weight is 254.7 grams, and the maximum fruit weight is 350 grams. The fruit's longitudinal diameter is 5.86 cm, transverse diameter 8.37 cm, and lateral diameter 9.28 cm; the fruit is flat in shape, with
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Identification and Control Methods of the Lingzhi Flat Bug
The flat bug Mezira membranacea branacea (Frab.) belongs to the order Hemiptera, family Aradidae. This insect was first discovered on log-cultivated lingzhi (Ganoderma lucidum) in Baoxi Township, Longquan City in 1994. In recent years, it has caused very serious damage in log-cultivated lingzhi production areas, with its range of damage expanding day by day, greatly affecting the yield and quality of log-cultivated lingzhi. The lingzhi flat bug is mainly distributed in Longquan, Zhejiang, China; Shaowu, Fujian, China; Nanning, Guangxi, China; Hainan Island, China; Taiwan, China; and Japan. Damage characteristics: The flat bug sucks the sap from lingzhi mycelium and primordia
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A Complete Analysis of the Key Points of Large Flat Apricot Cultivation and Management
1. Planting method Before planting, soak the seedling roots in water for 24 hours, take them out and dip them in a water-retaining agent, then plant them. After planting, irrigate thoroughly, and once the water has seeped down, cut the trunk back to a height of 80-100 cm. With the main trunk as the center of the planting hole, cover with 1 m x 1 m plastic film, press the edges of the film down firmly with soil, and leave the area around the planting pit slightly higher. Years of practice have proven that covering with plastic film after planting both retains water and raises soil temperature, causing the tree to sprout early and grow quickly. One week after planting, slip a plastic bag over the trunk, with a bag length of 40 cm and a width of 10 cm. To prevent
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Detailed Explanation of Key Cultivation Techniques for Schisandra chinensis in Flat Land
Schisandra chinensis is a multifunctional, multi-purpose, highly efficient wild economic plant. Its fruit is a precious traditional Chinese medicinal herb renowned both domestically and internationally, beneficial to the human body by tonifying qi, nourishing the kidney, astringing the lungs, restraining essence, promoting fluid production, quenching thirst, improving intelligence, and calming the mind. As medicine, it mainly treats conditions such as lung deficiency with wheezing and coughing, spontaneous sweating, night sweats, chronic diarrhea, dysentery, seminal emission, neurasthenia, forgetfulness, palpitations, insomnia, weakness of the limbs, acute and chronic hepatitis, and diminished vision. It can also be made into a series of health foods such as Schisandra wine, Schisandra beverages, Schisandra tea, and Schisandra honey; its stems, vines, and roots
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What are the prevention methods for aflatoxin poisoning in pigs?
Persistently refusing to feed moldy feed is the fundamental preventive measure. Preventing feed from becoming moldy is also an important part of prevention. 1. After grains mature, harvest them promptly, dry them thoroughly, and store them in a ventilated place to avoid mold. 2. Strengthen the storage of feed, taking care to keep it dry; especially in warm and rainy areas or seasons, more attention should be paid to preventing feed from becoming moldy. 3. Do not feed pigs grains or food that have already become moldy and spoiled. 4. Once a pig is found to be poisoned, immediately stop feeding the moldy feed and switch to fresh feed.
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What kind of peach is Zaolu flat peach? Introducing this peach tree variety
It was bred by the Beijing Institute of Forestry and Pomology by crossing SahuaHong and ZaoxiangYu. The fruit of this variety is flat and round, with a sunken fruit apex; the fruit is red, with a yellow or yellow-white background color, and the fruit surface is uneven. The average single fruit weight is about 103 grams, and the largest fruit is 185.2 grams; the apex cavity has cracking to varying degrees. At maturity, the skin peels easily, and the stone is semi-clinging. The flavor is fragrant and extremely sweet, and the soluble solids content is 12.5-18.8%. The flesh is soft and melting, milky white, and very juicy; in the Weihai area, the fruit ripens in mid-June, with a development period of about 70 days. Suitable for protected cultivation.
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