CATDOLL : CATDOLL: Different organisms have different temperature requirements. What is the appropriate temperature for shrimp farming?

Different organisms have different temperature requirements. What is the appropriate temperature for shrimp farming?

There are a large number of ornamental shrimps, and they are of various types. According to their living habits and properties, they can be divided into four categories: crystal shrimps, rice shrimps, Sulawesi shrimps, and crayfishes. They are very sensitive to water temperature. Generally, the temperature should be controlled between 22-24℃. During the breeding period, the temperature should be 1-2℃ higher than usual. The water temperature is best at 25℃. Once the water temperature exceeds 28℃, the female shrimps cannot carry eggs, and even cause the shrimp body to fade. Breeding environment: Generally, they can be raised in a grass tank and can be mixed with rice shrimps without hybridization. However, to obtain excellent old infiltration varieties, they must be raised separately and continuously hybridized for purification and optimization.

Including white socks, wood grain, cola, starry white orchid, blood cherry, native to Lake Tawuti, Sulawesi, Indonesia, it is a large egg-shaped ornamental shrimp, beautiful, rare and fragile, only suitable for single breeding. Here we introduce the pet shrimp that has been popular for 10 years - crystal shrimp. Its characteristics are: delicate, expensive, gorgeous, troublesome, and boosting the country's GDP. Those who know how to raise it can earn tens of thousands of yuan a day, and those who don't know how to raise it are just giving money to those who know how to raise it.

Under artificial breeding conditions, the suitable water temperature for white shrimp can be between 16 and 35°C (gradient range), and the optimal growth temperature is between 25 and 32°C. Related studies have shown that young shrimps weighing about 1 gram grow fastest at 30°C, while large shrimps weighing 12 to 18 grams grow fastest at 27°C. The minimum temperature for white shrimp farming should be above 18°C. When the water temperature is below 15°C, white shrimps will reduce or stop feeding; when the water temperature is below 9°C, they will lie on their side or die; when the temperature is above 35°C, the feeding and growth of white shrimps will be greatly affected.

The most suitable salinity for Penaeus monodon is 12‰, while the salinity for early shrimp fry cultivation is around 30‰, so the salinity of the pond water just after stocking should be similar to that of the shrimp fry pond. After stocking, water can be gradually added to reduce the salinity to a suitable range. Therefore, it is crucial to have a good water source and a complete drainage system. It is best to raise shrimp in a place with a freshwater source (including groundwater) and no large river outlet.

The most suitable breeding temperature for shrimps is about 25~32 degrees Celsius. This temperature is more suitable for shrimps, and their growth will be more comfortable.

The temperature can be kept at around 32℃, which is a very suitable temperature and is conducive to the better growth and development of shrimp.

It is more appropriate to keep the temperature at around 20-30 degrees. If the temperature is too low, it will lead to the death of shrimps.

Above 18℃, try not to exceed 38℃. Shrimp prefer to live in places with higher temperatures, so the temperature must be well controlled.

What are the specialties of Dandong?

Dandong specialty prawns

Dandong shrimp farming began in 1980 and has unique advantages. Donggang City won the national county-level shrimp farming championship for five consecutive years from 1988 to 1992. The output in the best year reached 13,800 tons, and the export supply value was 268 million yuan. An industrialized system of production, processing and sales has been formed, making shrimp a key product for Dandong's aquatic industry to earn foreign exchange. Japan, the United States and the European Union are the main export destinations for Dandong's shrimp products. Farming has become a pillar industry of Dandong's aquatic industry, and has driven the development of related industries such as feed, processing, transportation, foreign trade, and catering services. However, due to the impact of shrimp diseases, the shrimp farming industry has fallen into a trough since 1993. In recent years, due to the adoption of various measures, the comprehensive utilization level of shrimp ponds has been continuously improved, and the shrimp farming industry has gradually recovered. In 2000, the shrimp production was 3,058 tons, the export volume was 180 tons, and the export value was 132 million yuan. At present, the shrimp production in Dandong is recovering and growing.

Tussah

Tussah silkworm production is a traditional industry in Dandong. There are 2.605 million mu of silkworm farms. There are 61 administrative villages, 4,024 villagers' groups and 30,000 farmers raising tussah silkworms in the three counties (cities) and three districts of the city. There are 7 national silk industrial enterprises and 40 township processing enterprises, with 28,000 employees and an annual industrial output value of 400 million yuan. It is a backbone variety for export and foreign exchange earnings.

The development of modern biotechnology and the emergence of new high-tech tussah silkworm products have opened up new development space for tussah silkworm production. Dandong has the world's largest tussah silkworm production base, which is the most valuable resource wealth for the establishment and development of high-tech biological industries in the future.

Wild Vegetables

Wild vegetables are favored by people as "green food" that comes from nature and is pollution-free. They also attract people's attention for their unique health and medicinal value, becoming the new darling of the market.

Dandong has many mountains and dense forests, abundant rainfall, and rich wild vegetable resources. There are more than 80 kinds of wild vegetables collected and eaten by people, with an annual collection volume of more than 5,000 tons.

In recent years, Dandong's wild vegetable production and processing and export have made great progress, and wild vegetable cultivation has achieved a breakthrough. The current artificial cultivation area is more than 2,000 acres, the output is more than 2,000 tons, and the annual processing and export volume is more than 100 tons.

Azalea

Dandong has a long history of cultivating rhododendrons. The special climate resources, water quality and soil conditions have created unique natural conditions for the growth and development of rhododendrons, and formed a unique population of Dandong rhododendrons. The rhododendron industry has great development potential and broad prospects. At present, there are more than 2,000 flower farmers and more than 6,000 people engaged in rhododendron production in the city. There are 6 color systems and more than 270 varieties of rhododendrons, including more than 120 precious varieties. The rhododendron scale covers an area of ​​more than 3,000 acres, mainly concentrated in Zhenxing District, Zhen'an District and Yuanbao District, three urban areas with relatively convenient transportation. The annual output of potted flowers is more than 30 million pots, more than 10 million pots of commercial flowers, with an income of more than 60 million yuan, and sales cover more than 100 cities and regions across the country. In recent years, Dandong rhododendrons have been awarded gold medals many times at various national flower expositions, becoming a superior flower for state affairs activities. With the improvement of people's living standards and the rapid popularization of fresh cut flower consumption, rhododendron bonsai and small rhododendron combinations have a large market. Dandong azalea is a rare variety, which is the best in the domestic market. It is also gaining fame in the flower markets of South Korea, Japan and some European countries and has a promising market.

Dandong Strawberry

Dandong has a warm climate and abundant rainfall, which is very conducive to the development of strawberries. The area suitable for growing strawberries is relatively vast, and Donggang, Fengcheng, Kuandian, Zhen'an District, Zhenxing District, and Yuanbao District can all be planted on a large scale. At present, there are 17 of the 42 townships (towns) in our city, 5 of which have an area of ​​more than 5,000 mu, and 1 of which has an area of ​​more than 10,000 mu. Through years of development, the city's strawberry production area has reached nearly 100,000 mu, accounting for more than 81% of the total strawberry production area in the province, including 35,000 solar greenhouses producing 35,000 mu of strawberries, and 42,000 large, medium, and small plastic cold greenhouses producing 36,000 mu of strawberries. The total strawberry output is 150,000 tons, accounting for more than 10% of the national total output. It is an important base for strawberry production in the province and even the country.