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Prevention and Treatment Methods for Bacterial Diseases in Conventional Farmed Fish
In recent years, because the problem of drug residues has dealt a blow to China's aquatic product exports, the government has carried out a large-scale rectification of the entire fishery drug market, successively announcing a large number of banned drugs for aquaculture, such as chloramphenicol, furazolidone, malachite green, sodium pentachlorophenate, etc. Because special aquatic products have high economic value and a relatively large export market, through the joint efforts of all parties, the use of banned drugs has been well controlled. In the process of conventional fish farming, bacterial diseases occur relatively frequently,
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Principles of preventive medication for eel diseases and how to use the hanging bag method
Also called the hanging basket method. Bags or baskets containing medicine are hung around the feeding ground (platform) to form a medicated zone, so that when rice field eels enter this zone to feed, pathogens on their body surface are killed. This method has the advantages of using a small amount of medicine, being simple and convenient, being safe, and having few side effects. However, it also has the disadvantage of not completely killing pathogens. It is generally used to prevent diseases.
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Prevention and treatment methods for common intestinal diseases in fish
I. Viral intestinal diseases: enteritis. Harmful targets: grass carp, black carp. Symptoms: the diseased fish has a darkened body color, red and swollen anus, and in severe cases congestion at the base of the fins, red spots on the abdomen, and inflammation of the intestinal tract, which appears red or purplish red. Prevention and treatment methods: ① Before stocking fingerlings, bathe them in 10 ppm bleaching powder. ② During the epidemic season, splash 1 ppm bleaching powder over the whole pond once every half month, or feed sulfonamide medicated bait. ③ Garlic treatment. Use 250 g of garlic per 250 kg of fingerlings, mix it into the bait, and continue for 3 days to 6 days.
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These respiratory diseases in chickens need to be carefully differentiated
No matter which respiratory disease occurs, it is difficult to determine from the clinical symptoms and the performance of the flock which respiratory disease is present, which brings certain difficulties to diagnosis. To help everyone make a preliminary diagnosis on site, various respiratory diseases and common frequently occurring diseases with respiratory disease symptoms are introduced as follows: Chicken chronic respiratory disease. This disease is a respiratory disease caused by Mycoplasma gallisepticum. Mycoplasma widely exists in the chicken body, and it can be said that in commercial laying hen flocks of various breeds
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What causes leg and foot diseases in chickens?
In the modern chicken industry, the incidence of leg and foot diseases in chickens has increased, and they have become a problem that cannot be ignored in the chicken farming industry. At present, some chicken farms (households) lack sufficient awareness and understanding of leg and foot diseases in chickens, and often pay little attention to them, which easily leads to misdiagnosis and wrong treatment, causing unnecessary economic losses. Based on the author's many years of clinical practice and the clinical experience of many colleagues, the causes and similar symptoms of common leg and foot diseases in chickens in chicken production are summarized as follows. 1 Leg and foot diseases related to nutrition 1.1 Vitamins
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Porcine yin deficiency with liver hyperactivity is one of the difficult and complicated diseases of pigs.
[Etiology] This disease mostly occurs in spring and summer. In spring and summer, yang qi is released, and the main qi of livestock tends to the body surface. When feeding and management are improper, the climate is abnormal, or the pig's own regulatory and adaptive functions are disordered, some diseases closely related to the season appear, and pigs are prone to yin deficiency with liver hyperactivity. When the liver is hyperactive, it affects the heart (the mother organ affecting the child organ). The liver opens into the eyes, and the heart opens into the tongue, so diseased pigs show red eyes, red tongue, dry mouth, and fever. Because of persistent high fever, body fluids are consumed and damaged, so symptoms such as weakness and a preference for lying down appear. Liver hyperactivity overacts on the spleen, and the spleen fails in its transportation and transformation, so appetite decreases. The liver governs free coursing
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Four Practical Methods for Controlling Pests and Diseases in Flowers, Trees and Bonsai
Using pesticides to control pests and diseases in flowers and trees easily pollutes the environment. Here are 4 safe methods for controlling pests and diseases in flowers and trees. 1. Spraying method (1) Mix 0.5 kg of plant ash with 2.5 kg of water, soak for 24 hours, take the filtered clear liquid and spray it, which can kill aphids on plum blossoms, Chinese roses, pomegranate trees, etc. (2) Spray with a 0.1% concentration baking soda solution, which can control powdery mildew on flowers such as Chinese roses, chrysanthemums, garden balsam, cotton rose, and cineraria, with a control rate of over 80%.
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Pollution-free control methods for pests and diseases in flowers, trees and bonsai
Alcohol swabbing method: gently swab the leaves of orchids infested with scale insects using disinfecting alcohol; this can kill the scale insects, and in the following year there will rarely be any scale insect damage. Vinegar swabbing method: soak a cotton ball in edible vinegar (rice vinegar), then gently swab the leaves of camellias; this not only kills scale insects but also restores the damaged leaves to a green, glossy condition. Iodine swabbing method: when dry rot is found on the trunk of a stump bonsai, immediately use a blade wiped with iodine to scrape away all the rotted parts, reaching down to the xylem, then apply iodine to the main trunk; one week
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What are the common pests and diseases of rhododendrons?
Rhododendron black spot disease, also called brown spot disease, is a common and frequently occurring leaf spot disease of rhododendrons. After infection, black spots form on the leaves, which gradually dry up and fall off until the plant dies. The disease mainly affects rhododendron leaves and is caused by infection with the fungus Cercospora rhododendri. The pathogen first appears as several small brown spots; as these spots continually expand, the lesions join together into patches, producing grayish-brown mold mycelium. The affected leaves begin at the petiole, turn from green to brownish-yellow and drop early, and in severe cases this affects the growth and development and ornamental value of the rhododendron. The pathogen overwinters on leaves or diseased plants.
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Identification and Control Methods for Common Pests and Diseases of Azaleas
Azaleas are mainly grown for ornamental purposes, and they are highly vigorous and easy to plant. Azaleas have a habit of four loves and five fears: they love partial shade, love coolness, love moisture, and love acidic soil; they fear blazing sun, fear intense heat, fear heavy fertilizer, fear coal smoke, and fear poor air circulation. Here is an introduction to common pests and diseases and their control methods; (1) Azalea diseases. During the growth process of azaleas, the diseases manifested on the leaves fall into two types: physiological diseases and pathological diseases. (1) Physiological diseases. During the growth process of azaleas, if the trace element iron is deficient, iron-deficiency chlorosis often occurs. In the early stage of the disease, the mesophyll of new leaves fades from green to yellow, while the veins remain green, thus forming leaves with a green net-like pattern. As the condition worsens, the entire leaf turns yellow-white, the leaf tips and leaf margins become scorched, and finally leaf drop results.
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