-
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
-
The peel-off fragrant pear is a distinctive pear variety originating from the cold northern region.
In the past, we only knew that peaches could be peeled and eaten, and had never heard that pears could be peeled too. But now, Wang Shuyuan, an old horticulturist from Youyi County, through years of unremitting efforts, has crossbred and developed the Fragrant Pear (code name 12-7) whose skin can easily be peeled off entirely, and it is also of superior quality, cold-resistant and high-yielding. The 12-7 pear fruit is gourd-shaped, ripens on September 11, with yellow skin and a red blush on the sunny side, weighing 50-80 grams per fruit, with the largest reaching 150 grams. When first ripe it is of the sweet and crisp type; once it turns soft and fragrant, not only is peeling it easier than peeling a peach,
-
What are the symptoms of a rabbit cold? Detailed introduction to prevention and treatment measures
Causes A sudden drop in temperature, or a cold and damp rabbit hutch, can easily trigger a rabbit cold. Clinical symptoms The affected rabbit has a mild cough, sneezes, has clear or thick nasal discharge, difficulty breathing, is listless, has reduced appetite, and an elevated body temperature. If not cared for properly, it can easily lead to secondary pneumonia or hemorrhagic septicemia. Preventive measures Keep the indoor area clean and hygienic. When the temperature changes, be sure to close doors and windows to keep the warmth in. If there is strong wind and a drop in temperature, promptly light a fire in the breeding room to maintain a stable temperature and prevent it from fluctuating up and down. Treatment methods
-
What are the treatment methods for a dog cold?
[Causes] The main cause is the effect of cold, and it is even more likely to occur when feeding and management are improper. For example, sleeping outdoors on a cold night, lying for a long time on cold ground, being struck by drafts, being rained on after heavy sweating, or being stimulated by cold water when wading through water or crossing rivers, and being kept long-term in a cold and damp environment can all lower the resistance of the upper respiratory tract mucosa and promote the occurrence of this disease. [Key points of diagnosis] The sick dog is listless, apathetic, has uneven skin temperature, and the ear tips and nose tip are cool. The conjunctiva is congested or mildly swollen, with tearing, and body temperature is elevated,
-
How effective is Huoxiang Zhengqi Shui (Agastache Rugosa Qi-Correcting Liquid) in treating a cow's cold?
A draft cow suffered from uninterrupted diarrhea and dysentery due to exposure to wind-cold in winter. The next day it was fed an appropriate amount of charcoal powder, which took effect at the time, but it soon relapsed. On the third day its hair stood on end and its body trembled, and it still had uninterrupted diarrhea; it was diagnosed with a gastrointestinal-type wind-cold cold. Based on an estimated cow weight of 250 kg, it was given 5 vials of Huoxiang Zhengqi Shui, mixed into warm feed water for drinking. Within a few minutes the cow's bowel movements returned to normal, and its muzzle was no longer dry. Also, because the cow had previously been harmed by doufu jiangshui (drinking too much water), and this substance is cold and cooling in nature, Fuzi Lizhong Wan was therefore given at 5 times the human dosage, used for 2 consecutive days, to
-
Five practical methods to protect wheat seedlings from freezing and cold
When the severe winter comes, doing a good job of protecting overwintering crops such as wheat from the winter cold and taking preventive measures is an important guarantee for obtaining a bumper harvest. According to different field plots, the following five methods can be used to prevent freezing and protect seedlings. First, spreading grass to protect seedlings. Some varieties with strong spring habit are sown relatively late, emerge sparsely, and have fewer tillers. For such field plots, cover them with crop straw such as wheat straw and rice straw to keep them warm, promote tiller growth, prevent freezing and strengthen seedlings, so that the wheat seedlings can safely overwinter. Second, applying fertilizer and water to the roots. For field plots where wheat seedlings have shallow roots and few tillers
-
Detailed Explanation of Key Points for Japanese Cold Onion Cultivation Techniques
Japanese cold onion is a highly cold-resistant superior onion variety successfully selected and bred from Japanese cold onion by the Special Excellent Melon and Vegetable Research Institute of Heze Prefecture, Shandong Province. This variety has characteristics such as short leaves, heavy wax bloom, long and firm white stalks, early maturity, high cold resistance, and fast growth speed. Generally, seedlings are raised within 10 days before and after the Beginning of Autumn, cultivated in October, marketed in spring, and do not need protection in winter. Seedling raising: The suitable time for seedling raising is from July 20 to August 20. Select fertile sandy soil with high and dry terrain that is not prone to water accumulation for the seedbed, prepare the land and make beds, with a bed width of 1.5
-
Key Technical Points for Quick-Freezing and Cold Storage Preservation of Edible Fungi
Quick-frozen storage of shiitake mushrooms: In recent years, shiitake mushroom production has flourished across both northern and southern parts of China. Since the popularization of bag-cultivated shiitake mushrooms in Fujian, provinces such as Zhejiang, Henan, and Hubei have successively developed bag-cultivated shiitake mushrooms with success. Quick-frozen storage of shiitake mushrooms has become an indispensable and important preservation technique in the production and sales chain. Quick-frozen storage of shiitake mushrooms is simpler and more convenient than that of button mushrooms. Generally, fresh mushrooms are pre-cooled in ice water, removed and drained, then quickly placed in an ultra-low-temperature ice storage at -50 to -60°C for quick-freezing, and then placed in a cold storage at -18 to -24°C for preservation, through
-
Rapid Freezing and Cold Storage Preservation Techniques for Edible Mushrooms
Shiitake mushroom production has flourished across both northern and southern regions of our country in recent years. Since the popularization of bag-cultivated shiitake in Fujian, the provinces of Zhejiang, Henan, Hubei and others have successively developed bag-cultivated shiitake with successful results. Quick-freezing storage of shiitake has become an indispensable and important preservation technique in the production and sales chain. Quick-freezing storage of shiitake is simpler and more convenient than that of button mushrooms. Generally, fresh mushrooms are pre-cooled in ice water, removed and drained, then rapidly placed in an ultra-low temperature freezer at -50 to -60°C for quick freezing, and then placed in a cold storage at -18 to -24°C for storage, entering consumers' homes through the "cold chain" system.
-
Raising Pigs in Summer: Never Pour Cold Water on Pigs
In summer, when the temperature is high, pigs often pant heavily from the heat. Some farmers, worried that the pigs will fall ill from the heat, pour cold water over them, hoping to cool them down and make them more comfortable, not realizing that this does more harm than good. Pigs pant from the heat because they do not sweat efficiently, so the heat in their bodies cannot be released for the time being. If cold water is poured on a pig at this point, the intense cold stimulation causes the sweat pores all over the pig's body to contract sharply, blocking the release of body heat, and the body temperature instead rises abruptly. In mild cases this causes high fever and lung inflammation; in severe cases it can lead to the pig's death. Therefore, in the height of summer, never
条件筛选