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What are the common symptoms when a fish is sick?
Generally speaking, there are some key points we focus on when observing a fish's appearance: 1. Body color: If you observe your fish often, you will know what its color looks like in its normal, healthy state. If it suddenly becomes darker or lighter, or even turns deathly pale, it means the fish may have a problem. 2. Behavior: If your fish is normally always lively and active, and suddenly it no longer likes to move, or even stays in one spot in the tank, sinking to the bottom motionless or floating at the surface, then this too is a sign of a problem.
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How do you prevent disease when farming eels? There is real know-how involved
Every year in July, August and September, the weather is hot, and farmed eels are prone to serious diseases. The main signs are: 1. Gill rot disease caused by parasites or bacteria. 2. Liver-kidney syndrome caused by feed or management factors. These two diseases have a high mortality rate and are difficult to treat, and they are the biggest headache for many farmers. Based on follow-up surveys in recent years, I would like to offer some humble observations on this issue. 1. Focus on prevention to avoid disease outbreaks. The specific steps are as follows: 1. Regularly use insecticides,
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What are the key points to note when catching fish?
1. Choose a clear day with lower nighttime temperatures to start hauling the net; do not haul the net on overcast or rainy days, when fish are gasping at the surface, or when fish are sick. 2. Feeding should be stopped or reduced the day before net fishing; do not feed heavily just to increase the fish's body weight. The day before catching, remove stakes, branches, floating debris, and other objects from the pond to reduce the time spent hauling the net and sorting fish, minimizing losses. 3. For the first haul, start setting the net from 1/3 to 1/2 of the pond, to prevent too large a catch from being sorted in time and causing injury and death to the fish; this way
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Five things to note when introducing potatoes
Most seed potatoes are shipped in from other places, which is in fact a form of introduction. When ordering and buying seed potatoes, you need to understand factors such as the latitude, altitude and climatic conditions of the seed potato production area, and correctly choose the production area and variety according to the rules of potato introduction. Pay attention to latitude and altitude. Introduction from high altitude to low altitude and from high latitude to low latitude is likely to succeed. The reason is that during the growing period of potatoes at high altitude and high latitude, the temperature is lower, the seed potato stems are less infected with viruses and degenerate slowly; when introduced to low altitude and low latitude for planting, they generally
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Why you should always keep some fresh water on hand when raising a dog
When raising a dog, you should always keep some fresh water in a fixed spot so that it can drink whenever it is thirsty, before and after exercise, and before and after meals, so that it does not go looking for unclean water to drink. This is especially true in summer and autumn, when the weather is dry and hot, and dogs particularly need to drink fresh water to make up for the moisture lost through evaporation from the body. From the puppy stage onward, if a puppy drinks enough water every day, it will develop normally and have a healthy digestive system. Otherwise, frequent water shortage can easily lead to many problems, such as being more prone to heatstroke in summer. The water left over each day should be poured out and replaced with fresh boiled
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When is the most suitable time to plant straw mushrooms in northern regions?
Because straw mushrooms are a high-temperature strain, the suitable season for cultivating them is when the daily average temperature is stable above 25°C or the minimum temperature is above 23°C. In northern regions, June to September each year is the best season for planting straw mushrooms. Spawn preparation can be scheduled between May and June. In recent years, northern regions have broadened the suitable cultivation period by using winter-warm greenhouses.
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What to Do When Straw Mushroom Mycelium Shrinks? Causes and Control Methods
1. Using inferior spawn: Spawn that is too old or too young, degenerated spawn, weak mycelial vitality, poor stress resistance, or spawn stored for a long time in environments with temperatures that are too low or too high can all lead to failure to germinate after spawning and shrinkage of mycelium in the spawn blocks. Control: Select spawn of the appropriate age and high quality, and ensure the temperature during the cultivation process does not get too low. 2. Improper control of compost temperature: When the air temperature is high, the compost is too thick, and the mushroom house has good insulation, the temperature inside the compost after spawning exceeds 42°C for an extended period, which causes mycelium to shrink and die, resulting in burning of the mycelium.
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What to do when pinheads grow on the spawn blocks after inoculating straw mushrooms
2-3 days after inoculating straw mushrooms, many white pinheads grow on the spawn blocks exposed above the compost, causing the spawn to age and affecting the spawn's mycelial germination, or the mycelium grows but does not colonize the compost. The cause is that the spawn is stimulated by strong light, causing some hyphae to knot prematurely and form pinheads. Control method: when inoculating, do not leave the spawn exposed; it should be sown 2-3 cm deep into the compost, and a straw mulch should be used to shade and keep warm, preventing stimulation by strong light.
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How to select and prepare land when planting Polygonatum (Solomon's seal)
For planting Polygonatum, it is best to choose shaded, moist mountain land or relatively damp farmland, with fertile sandy loam or light clay soil. When using mountain land for planting, in spring and autumn clear the understory shrubs and weeds, dig and turn the soil about 30 cm deep, remove tree roots and other debris, rake it fine and level it, and make beds following the terrain and slope, ready for sowing or planting. When using farmland, plough and turn the soil before planting, and along with ploughing apply 3000 kg of organic fertilizer per mu, then make beds after land preparation for later use.
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What to pay attention to when stocking fish fry in reservoirs in winter
Every winter is the golden season for stocking fish species such as silver carp, bighead carp, grass carp, and black carp into reservoirs. But quite a few fish farmers report that within 2 to 7 days after stocking the fry, large numbers of dead fish and swimming sick fish appear on the surface of the reservoir water; these fish lose their luster and their body surface mucus increases. Based on the above symptoms, it can be inferred that the fish have contracted a typical case of "acclimation sickness." This disease is mainly caused by a drastic change in water temperature, in which the nerve endings in the fish skin are strongly stimulated, causing dysfunction of the internal organs, and its death
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