By Sascha W. Felix
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Extra resources for Advances in shrimp aquaculture management
However, it is difficult to conclude as the results are highly variable and do not always allows to draw a clear conclusion. Feed Formulation, Processing and Quality Control Manufacturing a feed for shrimp involves several steps and all these steps have a defined effect on the quality and performance of the final product, that is feed. We can classify these factors as follows: (i) selection of raw materials,(ii) formulation and (iii) processing. When the production process is done according to the basic rules, it will not significantly affect the quality of the diet.
Iii) Liming Lime can be used to control soil and water acidity. If it is not possible to perform the soil test to determine the correct amount of lime to be added, the soil pH can be tested as follows. Due to the high cost of treatment, applying agricultural lime may not be advantageous when the soil pH is very low, ie. 5. For soil with a pH of 5, treatment with 3 tons per ha of agricultural lime has been found to be effective. When lime tailings are used (from hydrate of lime processing), only one-half of the recommended dose of agricultural lime is used.
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.