Background, Objectives and Kind of Samplings
Shrimp sampling is a activity that have to be need on shrimp culture. Like already explained before,that one of characteristic of shrimp culture is unvisible object, that mean all of behaviours, condition and growth of shrimps can't be monitored directly because it covered by water that as it habitat. Based on this characteristic one part of alternative activity that could be done in order to estimated shrimps profile on pond is by shrimp sampling activity.
As simple, shrimp sampling is mean an activity for taking some shrimp as sample on it population at specific time period. Based on explanition above, shrimp sampling is more better to be implemented periodically from fry period until it ready to harvest. The objectives of shrimp sampling as generally are to knows:
- Shrimp conditionit related with shrimp quality. At the sampling moment that can be monitored shrimp samples quality directly. Some shrimp condition that be resulted from sampling can be used as base on decision making related with treatment of shrimp culture. At especially condition like it infected desease on serious level, shrimp sampling can be used as harvested decision making.
- Shrimp uniform level, that is mean a level of size and weight variation on it population at same age and same period. Shrimp uniform level included in good category if size and weight of shrimps is same/uniformly, in the other hand if on the it population, shrimps have various size and weight so it uniform level is included in poor category. The uniform level at shrimp culture will influence at feeding program arrangement related with kind, size and weight of food that will be given as daily.
- Survival Rate (SR), that is mean a shrimps life level at a specific time with equivalent to early population. The aproach that to be used to know SR value is with counting average number of shrimp that cacthed by jala and it times with wide of pond area divided with wide of jala.
- Average Body Weight (ABW), that is average weight of shrimps on it population at specific time. ABW to be found with counting shrimps total weight divided shrim numbers that it catched by jala.
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