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Five Key Points of the Nutritional Program for River Crab Farming
1. Protecting the liver. The liver is an important metabolic organ of the river crab, serving functions such as detoxification, blood production and oxygen transport, secretion of digestive enzymes, and absorption of nutrients. As the river crab molts and grows, the load on the liver increases, making it prone to pathological changes, which leads to a decline in constitution and immunity,
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Five key points for farming freshwater crayfish in rice paddies after the start of winter
We all know that many creatures generally have the habit of hibernating in winter, just like us humans: in winter their activity level drops a lot, so people's resistance is also much weaker in winter, and in winter the crayfish's activity level likewise drops a lot.
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What are the key technical points for paddlefish farming?
With the continuous development and growth of our country's aquaculture industry, various types of aquaculture are constantly emerging. Among them, fish farming is still common, but there are many species of fish, so the input costs and profit returns of farming different fish are all different, and different fish
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Key Technical Points for Grouper Culture in Earthen Ponds
Grouper is delicious and comes in a dazzling variety of forms, and is deeply loved by consumers everywhere. At present, cage culture is common in our country, but as the marine environment changes, cage culture suffers from more diseases that are difficult to control, so promoting grouper culture in earthen ponds is highly worthwhile. 1. Pond selection
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What key points must be grasped for scientific roe deer farming?
The roe deer is a precious ruminant herbivorous animal of the Cervidae family, commonly known as "grass-on-the-fly," and was a game delicacy favored by royals for hunting in feudal society. After the founding of the People's Republic of China, it was once a foreign-exchange-earning product purchased and exported by foreign trade departments. In the late 1970s, due to neglect of wild roe deer resource protection, the number of roe deer in our country
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What are the key points to note when raising pheasants during the laying period?
Protective measures during the laying period of pheasants directly affect the number and quality of eggs laid. So what protective measures need to be done well during the laying period of pheasants? Below is the experience summarized by the technical staff of Zhaobao Ecological Farm: 1. Increase lighting. According to the farm's experience, during the laying period
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Key Technical Points for High-Yield and High-Quality Freshwater Shrimp (Macrobrachium nipponense) Aquaculture
(1) Monoculture of freshwater shrimp in ponds. 1. Pond conditions: area of 5-10 mu, water depth of 0.8-1.5 m, firm and leak-proof pond embankments, slope of 1:(2-3), flat pond bottom slightly inclined toward the drainage outlet, and silt not exceeding 20 cm. 2. Preparation before stocking: ① Chemical pond clearing: 7-10 days before stocking, fill with 20 cm of water, apply 100-125 kg of quicklime per mu after slaking, and splash evenly over the entire pond for clearing and disinfection to remove wild fish and harmful organisms; ② Aquatic plant planting: species include Hydrilla verticillata, Potamogeton maackianus, etc., with the planting area accounting for 30-50% of the pond area, then fill with water and fertilize. 3. Water quality management: ① Use microbial preparations: such as EM bacteria, photosynthetic bacteria, etc. From late August to early November, use biological bacteria once every 15 days depending on the medication situation to improve the pond water environment. ② Microporous aeration: equip one 3 kW microporous aeration pump for every 20 mu, lay main pipes parallel to the two long sides of each pond, and install 6 disc-type microporous pipe discs with a diameter of 1.5 m per mu of pond. Dissolved oxygen should be above 5 mg/L. When dissolved oxygen in the shrimp pond falls below 5 mg/L, turn on the aeration pump. Aeration time is generally from 12:00 to 16:00 in the afternoon and from 24:00 at night to 6:00 the next morning, and should be extended on rainy or muggy days. 4. Feeding management: mainly feed complete compound feed for freshwater shrimp of different specifications at different stages, supplemented with rice bran and other feed in the early stage. Feed twice a day, with 1/3 in the morning and 2/3 in the afternoon. Adhere to the "four observations" (observe the season, observe the weather, observe the water color, observe feeding activity) and the "four fixeds" (fixed time, fixed location, fixed quality, fixed quantity). The daily feeding amount is 3-7% of shrimp body weight, and the specific feeding amount should be consumed within 2-3 hours. The feed coefficient for the whole season is 1.5-1.8. (2) Mixed culture of shrimp and crabs in ponds. There is no limit to the pond area, but generally no more than 50 mu is appropriate, with a water depth of 1.0-1.5 m. Pond clearing, disinfection, and grass planting are carried out according to the operating procedures for river crab culture. Stock 5-8 silver carp and bighead carp per mu, put in 200-250 kg of live snails per mu, and plant aquatic plants mainly including Hydrilla verticillata, Potamogeton maackianus, Elodea nuttallii, etc., with the aquatic plant coverage controlled at about 60%. During the growth period of young shrimp in autumn, apply fertilizer appropriately and feed a small amount of powdered feed. When using insecticides and disinfectants, avoid both the peak molting period of river crabs and the peak molting period of freshwater shrimp.</p>
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Hatchling turtle rearing has its finer points: these eight breeding techniques must be mastered
Turtles hatched from eggs are called hatchlings. When hatchlings emerge from the shell, they generally weigh 3 to 13 grams, with tender bodies and weak mobility, and they do not adapt well to the environment. If not carefully reared, they easily die. Therefore, doing a good job of rearing hatchlings is the most critical part of turtle farming. The following introduces eight
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Points to Note in Summer Bee Colony Management
We all know that the demand for honey in our country's market is very large, and the honey market is rather chaotic. In some places it is very difficult to buy pure honey on the market, so the prospects for keeping bees in our country are very good. Summer bee colony management for beekeeping needs
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A Detailed Explanation of Autumn Silkworm Rearing Techniques and Feeding Management Key Points
I. Characteristics of the autumn silkworm period. In our city, mulberry trees are mostly pruned in the spring with the "even-branch" style of pruning, so spring leaf yield is low while autumn leaf yield is high, providing ample feed for rearing autumn silkworms. At the same time, temperatures are higher in the early stage and lower in the later stage, which suits the physiological requirements of the silkworm. Therefore, based
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