Abstract
Selection programs applied to fish commodities can be done through some structured stages. The grading process is one of the critical stages of the selection program. Grading can be done by selecting a group of fish in a population that has the best growth performance. Fish groups that selection criteria for the next are maintained populations. The purpose of the study was to determine the effectiveness of grading on the growth of the gourami. This research conducted strains of giant 1gourami Jambi, Kalimantan, Majalengka, and Tasikmalaya strains.The first grading with fish body weight criteria was carried out by the time the gourami population was 11 months old, so it was obtained sub population in three sizes. Each strain is then nurtured separately. After each population months-old gourami, each individual was tagged, then maintained communally until 25 months old. Results of the experiment suggest that grading is apparently effective in affecting giant gourami growth significantly differences (P< 0.05). The implications of this research can be applied in the huge gourami selection program to produce superior strain.
Highlights
In the selection process to get the superior fish, cultivation activities are performed gradually following the rearing process to produce optimum growth
The selection process is done with the fish population gradient by taking fish groups with the best growth performance /fastest growth to a certain extent [1]
Grading is done in 11 month old giant gourami population based on body weight, so grouped each to three grades: grade l = 10 % best weight each population; grade 2 = above average weight + 1 deviation standards; grade 3: average weight + 1 deviation standards
Summary
In the selection process to get the superior fish, cultivation activities are performed gradually following the rearing process to produce optimum growth. The selection process is done with the fish population gradient by taking fish groups with the best growth performance /fastest growth to a certain extent [1]. Selection activities are done at specific sizes and different for each fish type. Each cultivator has consideration or other reasons in determining the size or age of the fish to choose. The fish selection should be made on the size of consumption by the breeder. After obtaining a fish of choice with the desired character, labeling or tagging each fish is indispensable to ease the following process in the breeding program
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