Protein and energy levels for maximum growth of snakehead (Channa striatus) fingerlings
1997
Variyakon Paksuchon
Protein and Energy levels for maximum growth of snakehead (Channa Striatus) fingerlings were evaluated in glass aquaria under laboratory conditions for 10 weeks. Six experimental diets containing either 35, 41 or 47 percent protein and 315 or 350 kcal digestible energy (DE) per 100 g were fed to fish with average weight of 0.35 g each. The study showed that protein levels but not energy levels affected fish growth. The diet containing 47 percent protein and 315 Kcal/100 g produced maximum growth and diet utilization for snakehead fingerlings. Increasing dietary protein affected fish growth, feed converstion ratio, and apparent net energy retention (p0.05) but not affected protein efficiency ratio and apparent net protein retention. For carcass compositions, fish that fed higher protein levels contained higher protein content whereas containing lower fat content (p0.05). Dietary energy levels affected body composition in term of fat contents. The higher energy levels in the diets, the higher fat content in fish body but lower body protein content (P0.05).
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