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Advances in shrimp aquaculture management - download pdf or read online

By Sascha W. Felix

ISBN-10: 9383048964

ISBN-13: 9789383048960

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The bottom should not be bone dry. It is better to dry it just until a man can walk on it without sinking in. It usually takes 7 to 10 days of drying to reach this point. Growth of “lab-lab” is also directly related to the amount of organic matter present in the soil. The following relationship of organic matter to the growth of algae could be seen normally. Table 2: Organic Matter Vs. Algal Growth Organic Matter (per cent) Growth of Algae Above 16 Very abundant 9–15 Abundant 6–8 Few 6 Very few To increase the amount of organic matter in the soil, fertilizer, chicken manure or other manures are applied to the dry pond bottom at the rate of 350 kg/ha.

Dietary vitamin C levels lower than 100 ppm would avoid deficiencies, maximum growth at levels of 100–150 ppm and improved immunity at 2000–4000 ppm. However, it is known that vitamin C at 4000 ppm level would cost around 30 percent of the total ingredient cost of the feed and it will not be economical for shrimp culturists. Vitamin E Vitamin E is an essential fat soluble vitamin primarily functioning as an antioxidant. It is the major lipid soluble antioxidant in membranes where it protects unsaturated fatty acids.

70 5000 1. 90 × 1. 90 6000 2. 10 × 2. 10 7000 2. 25 × 2. 25 The fertilizer to be applied is simply piled onto the platform and left alone. Recommendations for Managing Natural Food Organisms in Shrimp Ponds (a) Start with phytoplankton or “lab-lab“ for no more than the first two months after post larvae are stocked. (b) The shrimps should be held afterwards in ponds where production of phytoplankton or “lumut“ is maintained depending on the salinity level. (c) This can be accomplished by growing the shrimps in a nursery pond for the first two months and then transferring them to another pond.

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Advances in shrimp aquaculture management by Sascha W. Felix


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