Guangzhou Green Health Pharmaceutical Technology Co., Ltd. commited to build health and beauty,it is a High-tech intergreted enterprise company include research developing,manufacturing,market sale and OEM. We focus on product research,development and utilize scientific research industry since the company established.The company brings together the technical elites of biological research institutes and colleges and universities. In terms of product development and research, it is among the best in the industry in terms of raw materials, formulas and technologies.Relying on strong technical strength and professionalism, we are a gold medal partner for various e-commerce and shopping."Excellent quality, competitive price, efficient service" is our slogan to undertake commissioned processing, to help you win in the fierce market competition.We mainly engaged in the business scope of solid beverages, tablets, gummies, capsules, enzyme jelly, Liquid Drink and other new products development, production, packaging, sales and OEM one-stop service. Guangzhou Green Health Pharmaceutical Technology Co., Ltd.,strength and product quality have been recognized by the industry.We welcome friends from all walks of life come to visit, guide and negotiate business. Mint Slices, Man Mint Slices,Man Health Mint Slices ,Man Energy Mint Slices Guangzhou Green health Pharmaceutical Technology Co.,Ltd , https://www.greenhealthfactory.com
The survival rate of shrimp leaving the pond is a crucial indicator for assessing the economic performance and overall success of shrimp farming. The incidence of diseases in green shrimp ponds is influenced by various factors, including pond conditions, broodstock quality, and management practices. Based on recent production experiences, this article outlines key technologies for breeding green shrimp and earthfish fry, offering practical guidance for farmers.
First, selecting an appropriate pond is essential. Shrimp breeding ponds should have a reliable water supply, efficient drainage and irrigation systems, good water quality, and adequate ventilation and sunlight. The typical size ranges from 1 to 3 mu, with a depth of 1.2 to 1.5 meters (water depth of 1.0 to 1.2 meters). The bottom should be flat for easier harvesting, and the sludge layer should be between 10 and 15 cm. In practice, small fish and shrimp ponds are often used because they contain more organic matter, making it easier to maintain good water quality. Before use, the ponds must be thoroughly disinfected using agents like quicklime or bleaching powder to eliminate pathogens and predators.
Second, proper planting of aquatic vegetation is vital in earthen ponds. Aquatic plants serve as both habitat and food sources for shrimp, while also helping to purify the water. Planting should occur one week after disinfection, once the chemical toxicity has subsided. A water depth of 10 to 20 cm should be maintained, with filtered water added to prevent unwanted organisms from entering. Black algae or agrimony should be planted at a density of 3 to 5 plants per square meter. Floating plants such as duckweed can also be introduced, but their coverage should not exceed one-third of the pond's surface area.
Third, selecting high-quality shrimp seedlings is critical. The selected broodstock should be strong, active, and show no signs of disease. Ideally, the shrimp should measure 5 to 6 cm in length. It’s important to avoid long-distance transport or over-stocked shrimp, and to ensure that all broodstock is introduced at once. To simplify management, shrimp are often placed in polyethylene cages with mesh sizes around 0.4 cm. Approximately 0.75 kg of broodstock per square meter is recommended, along with some aquatic grasses inside the cages. For a 1-mu nursery pond, about 10 to 12 kg of shrimp can be stocked. The breeding period usually runs from March to May, depending on local temperatures and the expected harvest time.
Fourth, feeding and management play a crucial role in successful shrimp cultivation. Key points include:
1. **Egg Management**
Once the egg-bearing shrimp are placed in the cage, fresh animal protein-based feed such as snail meat or small fish gills should be the main diet, supplemented with vegetable-based feeds like tofu residue or cake flour. Feeding rates generally range from 5% to 8% of the broodstock’s body weight, depending on weather and shrimp activity.
2. **Shrimp Feeding**
When water temperatures reach 20°C to 15°C, monitor the development of shrimp eggs. When the eggs become transparent with two black spots (eyes), it indicates hatching will occur within 2 to 3 days. At this stage, fermented livestock and poultry manure are applied at 400 to 500 kg per mu. After 5 to 6 days, rotifers reach their peak, which is ideal for newly hatched zoeae. To extend the zooplankton peak, 3 to 4 kg of dry soybeans and 40 to 50 kg of soaked soy milk are added daily. Once all eggs hatch, non-egg-bearing shrimp are removed promptly to avoid natural death. One week later, soybean quantity increases to 4 to 5 kg per mu, with two daily feedings. Two weeks later, powdered feed—made from wheat flour, rice bran, and cake flour—is introduced. Feed amounts are gradually increased as the shrimp grow. Throughout the rearing period, maintaining water quality through regular water changes is essential to keep the water clear and healthy.