-
How to prevent and control porcine circovirus type 2 infection
To date, there are still no effective measures to control and eliminate other diseases caused by porcine circovirus type 2 infection, nor are there any truly effective commercial vaccines or drugs available to protect against porcine circovirus type 2 infection. Moreover, porcine circovirus type 2 is highly resistant to conventional disinfectants, which creates difficulties for purification work on pig farms. At present, comprehensive control measures should be adopted. 1. Change and improve raising methods, achieve all-in/all-out production at each stage of pig farming, and avoid mixing pigs of different ages in the same group
-
What are the feeding methods for the five types of fish feed?
1. Cake-type feed. Cake-type feed for feeding small fish should be crushed, soaked and ground into a slurry before feeding; for medium to large fish, simply soaking it soft is enough. 2. Grain feed. Large grains such as corn should be crushed and processed before feeding to fish; small grains such as paddy grains can be sprouted before feeding to fish. The young white sprouts of grains have high nutritional value, are easy for fish to digest, are absorbed quickly, and promote fast weight gain. 3. Green fodder. For feeding medium to large fish, green fodder can generally be fed directly after the soil is removed; for feeding small fish, it should be chopped or
-
Russian experts discover a new type of fish feed additive
Russian fish farming experts have recently found that chitosan, a biopolymer extracted from the shells of marine crustaceans, can be used as a fish feed additive, making fish feed easier to transport; fish that eat feed containing chitosan become plumper and finer. Ordinary fish feed is processed into loose pellets, but during transport it easily crumbles from friction or squeezing, and once put into water it quickly swells and breaks apart from soaking, causing waste. Therefore, when processing fish feed, adhesive ingredients need to be added to strengthen
-
What types of bacterial diseases do koi carp get?
① Red-skin disease (hemorrhagic disease) Symptoms: extensive hyperemia of the epidermis. There are no large ulcers or swellings on the body surface, only obvious redness at the fin bases, nostrils and other areas, with visible blood streaks. In the later stages it is accompanied by ascites and gill rot. Pathogen and cause of infection: caused by Pseudomonas fluorescens, highly contagious. Unsanitary water, injuries, and spoiled feed can all cause this disease, and it occurs in all four seasons. Treatment: soak the sick fish in the original tank (pond) with a 2 ppm furacilin solution, soaking for several consecutive days
-
For garlic to yield high, applying four types of fertilizer well is key
Seedling fertilizer: For garlic, after all seedlings have emerged, at the 2-3 leaf stage, apply 40-50 dan of decomposed dilute liquid manure per mu, or 20-25 kg of ammonium bicarbonate. Winter fertilizer: mainly organic fertilizer, applied in shallow furrows 10-15 cm deep between the rows, with 1500-2000 kg of pig and sheep manure and 15-20 kg of ammonium bicarbonate per mu, then cover with soil to prevent fertilizer volatilization; this fertilizer should generally be fully applied before "Winter Solstice." Green-up fertilizer: after Start of Spring, when the rain season begins, apply about 10 kg of urea per mu
-
2CM-2 Type Fully Automatic Potato Planter Introduction
The 2CM-2 type fully automatic potato planter is used in conjunction with a small tractor, integrating ditching, fertilizing, sowing and soil covering into one unit, and can complete fertilizing and sowing operations in a single pass. It features soil moisture conservation, labor saving, fertilizer saving and consistent sowing. Main technical parameters: dimensions mm 1170, 900, 900; total machine weight kg 120; matched power kW 11-18; number of rows 2; row spacing mm 300 (adjustable); working width mm 1500; sowing depth mm 100-120.
-
What Dental Diseases Do Dogs Get? A Full Breakdown of Common Types
The most common dental diseases in dogs are gum disease and broken teeth. Periodontal disease is not only harmful to the teeth, but also affects the bone and soft tissue around them, ultimately causing tooth loss. When a dog first develops dental disease, plaque usually appears, and plaque is a breeding ground for bacteria. If plaque is not dealt with promptly, it turns into tartar, and bacteria spread through the bloodstream and can affect the health of the dog's heart, lungs, kidneys, liver and other internal organs, causing disease. There is an old Chinese saying: prevent trouble before it happens. What good ways are there to prevent dental disease in dogs? Correct
-
What classifications of cut-flower lilies are there? A detailed introduction to the main types
Lilies used for cut-flower cultivation can be broadly divided into three categories. Namely, Asiatic lily hybrids, Oriental lily hybrids, and Trumpet lily hybrids. The growth cycle of Asiatic lily hybrids (referring to the number of weeks from planting to harvest) is 9-21 weeks, with varieties of 12-16 weeks being the majority, and about 30-40 varieties suitable for four-season cultivation. The growth cycle of Oriental hybrid lilies is mostly 12-20 weeks, with most varieties at 14-18 weeks. More than 20 varieties are suitable for four-season cultivation. The growth weeks of Trumpet lily hybrids
-
Honeysuckle Cultivation Techniques Explained (Part 1): Growing Flower-Type Chinese Medicinal Herbs
Honeysuckle is mainly produced in Henan Province and Shandong Province, and is distributed in most parts of the country. Growth habits: Honeysuckle grows on hills, in valleys, and at forest edges. It prefers a mild, humid environment, with an optimal growth temperature of 20°C-30°C. It is cold-tolerant and drought-tolerant, and has low soil requirements; it can grow in acidic soil and saline-alkali land. After 3 years of planting, flower production gradually increases; after 7 years, it enters the high-yield period; after 20 years, it gradually declines and needs renewal. Cultivation techniques: Site selection and land preparation: For the seedling nursery, choose a loose, fertile plot with convenient irrigation, preferably sandy soil. After the site is selected, plow deeply
-
What types of lesions does duck cholera cause?
Duck cholera mainly presents as septicemic pathological changes, with grossly visible manifestations of petechial hemorrhages on the serous membranes and mucous membranes. The liver surface has pinhead-sized, grayish-white necrotic spots with neat edges; the spleen is enlarged with necrotic spots of varying sizes on its surface; hemorrhage in the coronary sulcus, endocardium, and epicardium and pericardial effusion; pulmonary congestion and hemorrhage; hemorrhage in the duodenal and rectal mucosa, and hemorrhage on the surface of the intraperitoneal, gastric, and mesenteric fat. 1. Peracute type The peracute type dies quickly, and necropsy shows no obvious pathological changes. 2. Acute type Acute dis
条件筛选