Analysis of Common Problems of Penaeus vannamei Culture in South America
Analysis of three common problems in breeding South American white shrimp; One, 20 days after the shrimp common convulsions, white cloud phenomenon: Analysis: Because the water temperature is too high, the amount of water changed is too large (most of the water used for shrimp farming in the region comes from groundwater, and water is used all year round, and water sources are seriously deficient in nutrients). This causes the loss of nutrients in the water body. Suggestion: 6 to 7 pm with high stability C + gold multi-dimensional + ion calcium on the water, use for 2-3 days, and increase the oral administration of nutritional medicine, according to the tracking effect is significant. Second, put a lot of white foam on the water within one month, pH instability: In this area, two situations often occur in the region: 1. High pH (above 9.0), easy to clear water, common hepatopancreas become red and white in shrimp: Analysis: The algae were poisoned by acid and alkali in the water and shrimp poisoned by algae toxin. Suggestion: first detoxification with detoxification on the first day, interval 2-3 hours and then use black gold + brown sugar to lower the pH value and prevent moss; the next day with six antibiotic algae + special calcium fertilizer water, while the introduction of a small amount of fresh seawater , After the water color is cultivated, use the active garlic Bao + promote long spirit + herbal Kang Kang Shui to hepatate the hepatopancreas; at the same time alternating oral administration: active garlic treasure + herbal medicine Kang, promote Changling + Jianchangling, according to the tracking effect is remarkable. 2. The pH is low (less than 7.5), the algae phase is in the water, but the algae are not sufficiently prosperous and often accompanied by particles: Analysis: The water source is acidic and not treated in time after the rain. Suggestion: Use lime to adjust the pH on the first day, detoxify with the water purification king the next day, and after 2 hours, use special calcium + six control algae paste + new live bacteria Wangfei water, while introducing a small amount of new sea water, tracking effect is remarkable . Third, the common mid-aquaculture algae, water thick, phlegm, sticky phenomenon: Analysis: Continuous high temperatures this month have accelerated the growth, reproduction, and death of algae and fungi, resulting in insufficient water displacement, increased feeding (protein content in water is generally high), and unscientific use of medication. Advice: Drain 30-40 cm during the day, use a mixture of fresh live bacterium Wang and zeolite powder to form a paste, and return to the water level at intervals of 2-3 hours. In the evening, use a grain of God + six control bottoms to maintain healthy substrate, for 2 consecutive days; On the third day, special calcium and six-controlled algae paste were used to top-up the fertilizer, and the amount was used flexibly depending on the water quality.
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