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What effect does airflow have on the growth of pigs?
The effect of airflow on the pig's body mainly influences heat loss from the pig. Under general environmental conditions, as long as airflow exists, it can promote convective heat loss and evaporative heat loss from the body. When the ambient temperature is below the lower limit of the pig's suitable temperature, the effect of airflow increases the amount of heat lost from the pig's body, making the pig feel cold; at this time, in order to maintain body temperature, more energy must be consumed. Conversely, when the ambient temperature is above the upper limit of the pig's suitable temperature, because airflow helps the pig's body dissipate heat, and when the airflow is strong more heat is lost, increasing the wind speed
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Normal pre-winter use of tribenuron-methyl has little effect on succeeding cotton
Liu Wenzhang from Hengjing Town, Gaoyou City called to say that he sprayed tribenuron-methyl in his wheat field for chemical weed control, using the product according to the instructions, with the per-mu rate of 10% tribenuron-methyl at less than 15 grams. He heard that tribenuron-methyl, chlorsulfuron and metsulfuron-methyl belong to the same class of herbicides, and that chlorsulfuron and metsulfuron-methyl both have very long residual activity periods, often causing residual phytotoxicity to succeeding crops. He did not know how long the residual period of tribenuron-methyl is, and whether a field sprayed with tribenuron-methyl before winter would suffer from herbicide residue effects when cotton is planted as the succeeding crop. Tribenuron-methyl is a commonly used herbicide for controlling broadleaf weeds in wheat fields. Wheat, large
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What are the benefits and effects of Angelica sinensis (dong quai)? With commonly used formulas
Dong quai, also known as Qin gui, Yun gui, Xi gui, Quan dong gui, You dong gui, Bai dong gui, Gan gui, and Min gui. Its nature is sweet, pungent, bitter, and warm; it enters the Liver, Heart, Spleen, and Lung meridians, and has effects such as nourishing blood and regulating menstruation, invigorating blood and relieving pain, expelling toxins and promoting tissue regeneration, and relieving cough and calming wheezing. Clinically, dong quai is used to treat many diseases, such as: blood deficiency with sallow complexion, pale lips and nails, dizziness and blurred vision, irregular menstruation, scanty or absent menstruation, dysmenorrhea, excessive menstruation, metrorrhagia and blood in the stools as well as gastrointestinal bleeding, traumatic injuries, blood stasis with swelling and pain, headache, postoperative blood stasis pain, arthralgia with numbness, stroke with hemiplegia, sores and abscesses
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Secondary bagging of edible fungi can effectively prevent infection
In the production of shiitake mushrooms (Lentinula edodes), lion's mane mushrooms (Hericium erinaceus), wood ear mushrooms (Auricularia heimuer) and others, the secondary bagging technique is applied (that is, when the mushroom logs come out of the sterilization chamber, an extra layer of thin film bag is put on, so that the mushroom logs inside the bag do not come into direct contact with the ambient air), which effectively solves the problem of cross-infection during the log production process and keeps the strain survival rate above 97%. The technique is described below: 1. Preparation of the outer bag The outer bag should preferably be a low-density polyethylene film bag with a circumference 2 cm larger than the inner bag, a length 5 cm longer than the inner bag, and a thickness of 0.2 silk, with one end tied and sealed for later use.
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Which insecticide is effective for controlling the rice stem maggot?
The rice stem maggot has broken out and caused disasters in most rice-growing areas in China in recent years, making it a serious pest. At present, an insecticide for controlling pests such as the rice stem maggot has been successfully invented. The purpose of this invention is to provide a highly effective and low-toxicity insecticide specifically for controlling the rice stem maggot pest. The insecticide of this invention is prepared by mixing two agents, fipronil and imidacloprid, in a weight ratio of (1:0.1) to (0.1:1), and can be made into various formulations such as seed coating agents, seed dressing agents, suspension concentrates, powders, and emulsifiable concentrates. The advantages are: its insecticidal effect on the rice stem maggot
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7 Highly Effective New Fish Medications Recommended for Aquaculture Reference
Fish parasite killer. This product is an external insecticide for black carp, grass carp, bighead carp, crucian carp, and bream, capable of expelling and killing Sinergasilus, Lernaea, Trichodina, Ichthyophthirius, Gyrodactylus, sporozoans, Dactylogyrus, fish lice, glochidia, and other parasites on fish within a few hours, and can also kill aquatic centipedes, ants, and other pests. High-chlorine preparation. This product is a bactericide. It has a powerful killing effect on bacteria, fungi, pathogens, fungi, pathogens, etc., and is effective against hemorrhage disease, red skin disease, stamping disease, gill rot, black gills, enteritis, shell rot, and red
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A Complete Analysis of the Chemical Components, Effects and Pharmacological Actions of Reishi Mushroom
Reishi mushroom [Ganoderma lucidum (Fr.) Karst] is a fungus of the genus Ganoderma in the class Basidiomycetes. Since ancient times it has been known as the "immortal herb" and "auspicious herb". It is a precious traditional Chinese medicine for strengthening the vital essence and consolidating the constitution, and for nourishing and invigorating the body. It has a long history of medicinal use in our country and extremely high medicinal value, and is regarded as a precious Chinese medicinal material and a treasure in the treasury of traditional Chinese medicine. In the Eastern Han dynasty, the (Shennong Bencao Jing) listed reishi mushroom as a top-grade substance, holding that "taken over a long time, it lightens the body, prevents aging, and prolongs life like an immortal." Modern medicine has proven that reishi mushroom contains a variety of physiological
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How can cold-water fish farming effectively prevent and control pathogens?
1. Establish a strict quarantine system. When introducing and exporting fish eggs and fry, all farming areas must strictly carry out quarantine to prevent and control the occurrence of diseases. Farms should set up quarantine ponds to isolate introduced fish species; only after the introduced fish are confirmed free of important diseases may they be temporarily reared. Quarantine ponds are generally located at the end of the drainage ditch. The length of quarantine time should be determined by the transport season, water temperature, and the characteristics of the disease. When the average temperature is not lower than 12°C, 20 days are required; when the water temperature is higher, it can be shortened, which is determined on the basis that the lower the temperature, the longer the incubation period. If
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What to do about a high egg breakage rate? Sharing effective reduction methods
Broken eggs account for about 6-8% of total egg production, bringing considerable losses to laying hen production. Below are methods to reduce egg breakage. 1. Meet nutritional needs, especially calcium and vitamin D3 levels, while keeping phosphorus at an appropriate level and managing the calcium-to-phosphorus ratio well, generally around 3.4-4.6:1. 2. Increase the frequency of egg collection, avoid eggs colliding with each other, especially during peak laying hours, and handle eggs gently when collecting and moving them. 3. In hot seasons, appropriately increase
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What pharmacological effects does goji berry have? A detailed explanation in one article
Goji berry is a deciduous shrub, with a tree height of 1.5 m-2 m and a growth period of 35-50 years. It bears small eggplant-red or pale red flowers and produces bright red fruits the size of jujube pits. It is a rare and precious traditional Chinese medicinal herb and a fine tonic, with effects of tonifying, treating deficiency, anti-aging, protecting the liver, and promoting and regulating immune function. As a medicinal material, goji berry has a long history in China. In addition to the records in the Book of Songs, Su Dongpo of the Song Dynasty wrote in the poem "Xiaopu Goji": "Roots, stems, flowers, and fruits, nothing is discarded when gathered,"
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