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Key Points for Selecting Frog Fry and Scientific Breeding and Stocking Techniques
Frogs are not only guardians of the rice fields but also a nutritious delicacy on the human dining table. They are rich in protein, carbohydrates, water and a small amount of fat, and their meat is delicious. To meet market demand, there are now frog species bred specifically for food, including not only frogs but
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The Best Time to Release Crayfish Fry and a Detailed Guide to Three Stocking Periods a Year
Crayfish is also known as red swamp crayfish, red claw crayfish and freshwater crayfish. When farming crayfish, fry are naturally released, so when is it relatively suitable to raise crayfish fry? What is the best time to release the fry? Crayfish fry breeding 1. Broodstock selection can be done in
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Detailed Explanation of Key Technical Points for Spring Stocking of Tilapia Fry
The whole year's work depends on a good start in spring. After mid-March, air and water temperatures in South China begin to rise gradually and stabilize; farmers are now in the preparation stage for stocking tilapia fry. 1. Precautions for stocking fry Relevant preparatory work should be done before stocking fry. After the pond is cleared
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How should the timing of shrimp fry stocking and water temperature be managed to achieve high yields?
No matter what kind of aquaculture it is, farmers all hope to exchange the smallest investment cost for the largest profit margin. Therefore, for farmers, achieving high yield is the issue they care about most, so reasonably mastering their living environment and living water temperature is very
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Detailed Explanation of Key Technical Points for Shrimp Fry Stocking in Spring
1. After thorough pond disinfection, it is essential to splash Jiedu Lvshuibao or Hushui Jiedu Wang to neutralize and expel toxins. After 4 hours, splash compound Bacillus or Xinjunke combined with Heitujing over the entire pond (they must be soaked in water 4 hours in advance). This decomposes disinfected animal carcasses and other organic debris and converts them into nutrients needed for algae growth, which helps cultivate algae and fertilize the water, and cultivate bacteria to maintain water quality. Then choose a sunny morning with ample sunlight to fertilize the water. If conditions permit, add 10 cm of fresh algae-containing water to introduce algae species, or use Duozaoyuan to supplement algae species. Before fertilizing the water, turn on the aerator to make the water flow, which is beneficial for algae reproduction and growth. Fertilization: soak Qiangxiao Peizao Gao, Feishui Kele or Yizao Yingyangsu, Feishui Lishengsu in water for 4 hours before splashing. For ponds where water fertilization has failed or does not work for a long time, after filling with water, first use Hushui Jiedu Wang and Heitujing to purify the water, then after 4 hours use the above water fertilization products with Duozaoyuan to fertilize the water.</p><p>2. Most Litopenaeus vannamei (Pacific white shrimp) farmers believe that the first batch of shrimp fry is the best, and they all ignore weather conditions in order to grab the first batch of fry, even stocking fry at lower temperatures. If strong winds and cooling weather occur within two days after stocking, causing a sudden drop in temperature, the shrimp will have a strong stress response. Because the fry are relatively weak, this can easily cause fry mortality. Therefore, stocking fry requires patience. Wait for consecutive good weather to stock fry, and choose a sunny morning or evening. Before stocking, use Jiedu Lvshuibao or Hushui Jiedu Wang to remove toxins from the water, and splash VC Yingjiling and Fuhe Gaibao to improve the fry's stress resistance and promote molting. 3. When selecting shrimp fry, understand the qualification, commercial reputation and technical strength of the hatchery enterprise, such as whether the production of broodstock and seedlings is standardized, whether it meets national requirements, and whether antibiotics are used or high-temperature seedling production is carried out throughout the production process. When purchasing fry, whether the enterprise can present quarantine qualification certificates from relevant government departments to ensure the health of the shrimp fry is the primary condition for successful farming. 4. Maintain the stability of pond water. Too lean or too fertile water will cause oxygen deficiency. Choose excellent water fertilization products such as Qiangxiao Peizao Gao, Jiaosu Gaifei, Yizao Yingyangsu, Feishui Kele, Feishui Lishengsu, Duozaoyuan, etc. to cultivate high-quality algae and keep the water body fertile, lively, tender and refreshing. When the water is too fertile and too dense, appropriately exchange part of the water, use Jiangjie Wang to improve water permeability, and use microecological preparations such as compound Bacillus, Xinjunke, pure EM bacteria, etc. to maintain the balance of algae and bacteria in the pond water. Regularly use Heitujing combined with compound Bacillus, Yingji Di Jiankang and other substrate improvers to keep the pond bottom clean and prevent moss, giving the shrimp a good bottom environment. 5. Feed reasonably. The feeding time is about 2 hours. Check the shrimp's feeding situation while they are eating to avoid leftover feed or insufficient feed. Regularly add health nutritional products such as Fengxia Gaowen C, Mianyi Huoliyuan, Hugan Weibao, Kaiwei Putang, etc. to the feed to improve the shrimp's feeding ability and the body's disease resistance, and improve the intestinal tract. Especially during the juvenile shrimp liver transition period, Hugan Weibao, Fengxia Gaowen C, Mianyi Huoliyuan, etc. should be added. 6. Use drugs reasonably. When shrimp become sick, according to the incidence situation and symptoms, use drugs safely under the guidance of technicians, and try to avoid using highly irritating drugs or antibiotics. It is recommended to usually splash herbal antibacterial and detoxifying traditional Chinese medicine products such as Caoben Jundumie for prevention, and at the same time pay attention to regulating water and improving the bottom, maintaining excellent water quality and substrate environment.</p>
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Key Technical Points for Rearing Snakehead Fry in Net Cages
1. Stocking density: generally 600-700 3-cm summer fry per square meter, with a harvest size of about 6-8 cm. The summer fry stocked must be strictly graded and screened so that the size is uniform at stocking, and the stocking density should be adjusted appropriately according to size. 2. Feed and feeding
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Six key considerations for stocking shrimp fry in shrimp farming
As shrimp enter the peak harvest period in various regions, most shrimp farmers have by now finished the first crop of production, and many have entered the fry stocking stage for the second crop of shrimp farming. The author introduces the current key considerations for shrimp fry stocking as follows, for reference by peers.
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Overwintering management techniques for freshwater pomfret fry and fingerlings after being stocked into ponds
1. Overwintering pond preparation: area 600-1500 sq m, pond depth 1.5 m; the pond water in the Pukou District area of Nanjing is geothermal spring water, flowing into the pond in a slight current; the inlet pipe is 10 cm, and the mud at the pond bottom is 10 cm thick. After drying the pond and disinfecting it, fill with water. Each pond is equipped with two 3-kilowatt aerators. 2. Pomfret fry and fingerlings
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How to stock fry in cage culture of yellow catfish
I) Preparation before stocking fry 1. Preparation of cages of different specifications Cages of corresponding specifications should be prepared according to the size of the fry to be stocked. If the stocking size is 2 cm, second- or third-stage fry cages and second-stage grow-out cages should be prepared; for fry of 5 cm, second-stage fingerling and second-stage grow-out cages should be prepared
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Things to Note When Stocking River Shrimp Fry, These Points Cannot Be Ignored
Many people in daily life really enjoy eating river shrimp, because everyone knows that shrimp are high in protein and taste very delicious, so the market prospects for shrimp are currently very good. Let's take a look together below! River shrimp fry
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