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Prevention Methods and Technical Key Points for Diseases of the European Eel
(1) Do a good job of water disinfection, using effective drugs and methods to kill parasites, viruses and bacteria in the water: ① Evenly splash the whole pond with 0.3 g/m3 (cubic meter) Yuchongqing No. 2 once every 6 days, to kill parasites and eggs in the water and prevent dactylogyrosis; ② Splash the whole pond with 0.2 g/m3 of chlorine-rich disinfectant once every 6 days, to kill viruses and bacteria in the water; ③ Splash the whole pond with 0.3 g/m3 of Manjing once every 6 days, to kill bacteria, fungi and protozoa in the water. Note: the above three
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Detailed Explanation of the Preparation Method and Technical Key Points of Fish Scale Glue
1. Process flow: fish scales → washing → alkali soaking → acid soaking → lime soaking → rinsing → glue boiling → filtration → coagulation → glue scraping → drying → finished product. 2. Process steps. After washing, the fish scales are soaked in a 5% caustic soda solution for about 5 minutes to remove grease and fatty skin and to make the scales swell. The alkali-soaked fish scales are immediately rinsed with water, then soaked in clean water to remove alkalinity until phenolphthalein no longer turns red. Next, the cleaned fish scales are soaked in hydrochloric acid, with the amount used starting at 12% (hydrochloric acid volume concentration 31%), then gradually decreasing, 8%, 3%,
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Key Technical Points for Integrated High-Efficiency Duck-Pig-Fish Farming
Through integrated farming, ducks, pigs, and fish can make full and rational use of energy, achieving the goals of saving feed and attaining high yield and high efficiency. The integrated high-efficiency duck-pig-fish farming method is: 1. Select superior breeds. For ducks, Cherry Valley ducks are best; for pigs, crossbred Landrace pigs and other improved breeds; for fish, mainly silver carp, bighead carp, black carp, grass carp, etc. These breeds tolerate coarse feed and grow fast. 2. Management of duck pens, pig houses, and fish ponds. Duck pens, pig houses, and fish ponds should be concentrated and conveniently located for transport to facilitate management. Keep the
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How to prevent and control sheep hard tick disease? Detailed explanation of practical technical points
Dense infestation of hard ticks on sheep can cause goats to become emaciated, some pregnant ewes to abort, and mortality is very high among lambs and ewes after lambing. Expert disease analysis. (1) Pathogen: The pathogen of this disease is 6 genera of the family Ixodidae, namely Ixodes, Hyalomma, Haemaphysalis, Dermacentor, Rhipicephalus, and Boophilus. Their common morphological features are: the adult body is elongated oval, slightly convex on the dorsal side and flat on the ventral side; there is no distinction between head, thorax, and abdomen, and the three are fused into one body, with a false head at the front end; the false head is composed of a pair of chelicerae, one hypostome, and a pair of palps
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Diagnostic Methods and Technical Key Points for Newcastle Disease in Chickens
Since Newcastle disease (ND) was recognized in 1926, many countries have regarded ND as an endemic disease. Except for a few countries that produce poultry at a commercial level, all countries carry out preventive immunization. One of the most characteristic properties of different strains of chicken Newcastle disease virus (NDV) is that their pathogenicity to chickens varies greatly. Based on the clinical symptoms caused in infected chickens, NDV strains can be divided into 5 groups or pathotypes, which are: the viscerotropic velogenic type, characterized by high pathogenicity, with intestinal hemorrhagic lesions commonly seen;
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How to Raise Ducks? Key Technical Points Explained
Stocking time. According to the feed resources in the orchard, orchard duck raising is divided into a period dominated by free-range stocking and a period dominated by confinement rearing. The most suitable stocking period is the peak season for the reproduction and growth of plants and animals in the orchard, generally from mid-April (after Qingming and before Guyu) to the end of October. At this time, the forage grass in the orchard grows luxuriantly, and there is plenty of residual byproduct from the fruit trees; the ducks can feed on various kinds of green grass, wild vegetables, and fallen flowers, leaves, and fruit as plant-based feed, as well as various insect eggs, pupae, crawling insects, and near-surface flying insects as animal-based feed. Adult ducks can be stocked year-round. Site selection. Ducks move clumsily
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What are the key technical points for cotton boll stage management?
The period from flowering to boll maturity and boll opening in cotton is called the flowering and boll stage. In general cotton fields, from early July to early September, cotton growth during the flowering and boll stage still involves both vegetative growth and reproductive growth proceeding simultaneously, but gradually shifts from vegetative growth dominance to reproductive growth as the main focus. The main direction of management in this period is to increase the setting of three bolls. Its management techniques mainly include five aspects. 1. Heavily apply flowering and boll fertilizer, and supplement with top-covering fertilizer. The fertilization time is at full flowering when 2 mature bolls have set on the lower part of the cotton plant. Generally, apply 10-15 kg of standard nitrogen per mu. If soil fertility is poor, cotton plant growth is weak, and soil
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Detailed Explanation of Key Technical Points for Drip Irrigation and Fertigation under Cotton Mulch
Drip irrigation under cotton mulch is a new water-saving technology that allows artificial control of irrigation volume and field microclimate, greatly alleviating the **tension of water use for the first irrigation, and can control the reproductive growth and vegetative growth of cotton, helping to shape an ideal plant architecture and reduce ineffective nutrient consumption. Although some problems still exist in practical application, cotton under drip irrigation generally opens bolls earlier, has better quality and higher yield. At the same time, under special climatic conditions, drip irrigation has demonstrated unique cold resistance. When encountering special low-temperature conditions in spring and autumn, growth and development remain normal, with strong high and stable yield, and a relatively concentrated maturity period.
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How to manage cotton after topping in July? Detailed technical points
Hot or high-temperature and high-humidity conditions are one of the most harmful factors in the livestock and poultry industry, leading to the occurrence of heat stress syndrome in livestock and poultry. Heat stress suppresses the body's immune function, reduces the concentration of immunoglobulins in the blood, decreases the number of lymphocytes in the blood, and causes a decline in the phagocytic capacity of macrophages in the body, triggering infectious diseases in livestock and poultry. Therefore, heat stress makes livestock and poultry prone to all kinds of diseases. Since modern excellent livestock and poultry breeds with higher production performance have weaker resistance to heat stress, severe heat stress often causes high-producing livestock and poultry to die first, resulting in serious economic losses. Here we discuss improving the
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Key Technical Points for Cultivation and Management of Cotton under Hose Drip Irrigation
As the crop area in Jimsar County has increased year by year, water resources have become scarce, and the cost of cotton has risen, the comparative benefit of cotton has declined year by year. For this reason, we introduced and promoted the technique of cotton drip irrigation under film at normal pressure (hose). I. Main indicators 1. Yield: 100-130 kg of lint cotton per 667 sq m. Yield composition: 13,000-15,000 harvested plants per 667 sq m, 5-6 bolls per plant, 5 g per boll, lint percentage 33%-35%. 2. Fertilizer and water
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