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How to identify the quality of fish feed? These practical tips are a must-know
The quality of pelleted feed for fish is closely related to farming profitability and should be given great attention. Its quality is mainly judged by five aspects: "look, smell, twist, soak, and chew," introduced as follows: First, look. Pelleted feed for fish is made by uniformly mixing and pelletizing several main raw materials such as fishmeal, soybean meal, cottonseed meal, rapeseed meal, wheat middlings, and meat-and-bone meal in a certain proportion. If there is more fishmeal and soybean meal, the feed color is slightly yellow; when there is more miscellaneous meal, the feed color is dark red; when there is more wheat middlings, the feed color is slightly grayish white, and so on.
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What are some practical methods for protecting fish and soft-shelled turtles from the cold in winter?
1. Pond selection: Choose a deep-water pond (over 2 m deep) that is sheltered from the wind and faces the sun for natural overwintering. The water in the overwintering pond should not remain stagnant for long periods; usually replace part of the pond water every 20 to 30 days, each time replacing 1/4 to 1/5 of the total pond water, to prevent pond water contamination. 2. Set up windbreaks and cold-shelter holes: On the north side of the pond, a 2 m high windbreak can be built from straw or soil, and on the east and west sides, earthen walls sloping toward the south can be built in a dustpan shape to reduce the impact of the north wind, so that when a cold wave strikes, the water temperature will not drop significantly. Around the pond,
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What to Do About Pigs Grinding Their Teeth at Night? A Detailed Guide to Practical Prevention Methods
1. The feed given should be varied. It is best to feed pigs compound feed, because the various nutrients in compound feed, such as minerals and trace elements, are properly balanced. When feeding concentrated feed, it should be paired with green and coarse feed, and an appropriate amount of minerals and trace elements should be added, such as adding 1%-2% bone meal and 0.25%-0.5% salt, which has a certain effect on preventing pigs from grinding their teeth at night. Once a pig shows nighttime teeth grinding, supplement each pig's feed daily with 30-50 grams of bone meal or eggshell powder or calcium bicarbonate powder, and 6-19 grams of salt, feeding continuously for 7-1
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Prevention and Treatment Methods and Practical Tips for Chicken Cloacitis
I. Disease Overview: Cloacitis, commonly known as leukorrhea or post-anal gonorrhea, is an ulcerative inflammation occurring in the cloaca and anus. A white viscous discharge flows from the anus of diseased chickens, with a pungent odor. This disease is a venereal disease of chicken flocks. II. Epidemiological Characteristics: Its pathogen has not yet been isolated. Experiments show that cloacitis cannot necessarily be considered an infectious or contagious disease. During natural outbreaks (even if lasting for several months), healthy chickens do not become infected. Even when lesion tissue is smeared
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How to prevent soybean flower and pod drop? Practical methods are here
1. Topdressing according to the field and the seedlings. For fields where the plants cannot close the rows in time during the flowering period due to lack of fertilizer, topdressing can be applied once more at the early flowering stage. Generally, applying 5 kg of urea or 10 kg of ammonium sulfate per mu can reduce flower and pod drop. 2. Foliar spraying of fertilizer. During the flowering and podding period, generally use 0.5 kg of urea, 1.5 kg of superphosphate, 0.25 kg of potassium sulfate, and 25 g of borax per mu, add 50 kg of water to extract the infusion, and spray it on the leaves. It is best to spray on cloudy days or after 4 p.m., which helps preserve flowers, increase pods and seeds
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What are the difficulties in cultivating Schisandra chinensis? A complete analysis of practical countermeasures
Cultivating Schisandra chinensis artificially to replace wild resources has already become an inevitable trend in the development of the Schisandra chinensis industry. Many difficulties have also emerged in the production process of artificially planting Schisandra chinensis, and these difficulties have seriously hindered the path of Schisandra chinensis production toward intensive, large-scale, and industrialized development, and are also the fundamental reason for the current lack of large-scale successful experience in artificially cultivating Schisandra chinensis. Regarding the harm caused by pests and diseases, pesticide residues, and drift. The overall countermeasure is: adhere to the three principles of prevention, mitigation, and treatment. Prevention: in the process of Schisandra chinensis cultivation, consistently implement the policy of placing greater emphasis on prevention than on treatment, act early to seize the initiative. Take preventive measures before trouble arises and avoid being passive. In recent years, due to consecutive warm winters, the development of Schisandra chinensis has advanced, so all agronomic measures must also be carried out earlier. Among the 24 solar terms, after Awakening of Insects, Schisandra chinensis should be protected according to local phenological conditions. To prevent certain fungi in the atmosphere from attaching to the stems and vines of Schisandra chinensis, the specific measure is to spray Bordeaux mixture, prepared with equal amounts of quicklime and copper sulfate, one part each, and 200 parts water. After Schisandra chinensis leafs out, promptly spray broad-spectrum fungicides and foliar fertilizers, Bihu + polyoxins + fulvic acid. Mitigation: if nearby farmland is sprayed with butyl ester pesticides, we must take targeted measures and spray mitigating agents, or spray foliar fertilizers to improve immunity. At this stage, prevention should focus mainly on leaf blight. Spray pesticides against Deuteromycota fungi. Treatment: if diseases still occur when protective and mitigating measures are ineffective, apply the right remedy for the condition. Carry out timely treatment. Strictly prevent the loss of the optimal prevention and treatment timing, which causes losses. For the treatment of several common diseases, please follow the methods in the Schisandra chinensis pest and disease section below. Keep firmly in mind the lesson of the large-scale damage to Schisandra chinensis in Heilongjiang in 2007, and never allow the tragic situation to repeat itself.
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How to Identify Poisonous Mushrooms? 5 Practical Methods to Teach You
First, look at the color. Poisonous mushrooms have brightly colored caps, with colors such as red, green, ink black, and purple-blue; purple ones in particular are often highly toxic and tend to change color after being picked. Second, look at the shape. Non-poisonous mushrooms have relatively flat caps, smooth surfaces, no rings on the cap surface, and no volva at the base. Poisonous ones have oddly shaped caps, thick and hard cap surfaces, rings and volva on the stem, and thin or thick elongated stems that break easily. Third, look at the secretions. Non-poisonous mushrooms have thick, concentrated secretions that are reddish-brown and tend to change color in the air after being torn apart. Fourth, smell the odor. Non-poisonous mushrooms have a distinctive fragrance, while poisonous mushrooms have a strange
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How to keep button mushrooms fresh? These three methods are very practical
In order to extend the storage period of mushrooms, maintain their quality, color and flavor, and improve the cultivation benefits of mushrooms, the preservation techniques for mushrooms are introduced below. Mushroom growers can choose and apply them according to their own actual conditions. 1. Low-temperature preservation method. Practice has proved that low temperature can keep mushrooms fresh and of good quality. The method is: after mushrooms are harvested, their humidity is 90-95%; at this time, storing the mushrooms at 0-3°C can achieve the purpose of preservation. It is worth noting that during the preservation period, the temperature of the mushrooms should be kept
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How to Store and Keep Mushrooms Fresh? A Detailed Guide to Practical Preservation Methods
Mushrooms are best eaten fresh, but since they do not keep well under natural conditions, especially when mushrooms are cultivated on a large scale, storage and preservation can be used to delay @#@136@#@ or to make canned products and other goods for export earnings. Here are several storage and preservation techniques for mushrooms. 1. Cold storage preservation. After the harvested fresh mushrooms are sorted, place them in containers such as baskets, trays or hampers and cover them with multiple layers of damp gauze or burlap. In a cool, shaded place, set out a vat with a small amount of clean water inside, place a wooden rack above the water, set the baskets or hampers containing the fresh mushrooms on the rack, and then seal the mouth of the vat with plastic film. 2.
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How to prevent and treat Geranium blackleg disease? Introduction to practical methods
Symptoms This disease occurs on both cuttings and mature plants, with cuttings being more severely affected. Decay begins at the base of the stem and develops upward, causing death. After mature plants are affected, they turn black, and the blackening spreads upward, the leaves drop, and the entire plant withers and dies. Pathogen Pythium splendens Braun, belonging to the Mastigomycotina. The hyphae are well developed, branched, and non-septate, appearing as white cottony fluff when growing vigorously. Sporangia are filamentous, round, or nearly round, and produce zoospores that cause infection.
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