Effectiveness of Sargassum meal as feed additive on growth performance of Nile tilapia, Oreochromis niloticus
2018
Pratiwy, F.M. ((Mie University, Tsu, Mie (Japan). Graduate School of Bioresources, Laboratory of Fish Physiology), (Universitas Padjadjaran, Bandung (Indonesia). Graduate Program of Environmental Studies)) | Kohbara, J. | Susanto, A.B.
The present work was carried out to assess the effects of Sargassum meal (SM) on the growth performance of Nile tilapia Oreochromis niloticus. Three different 32% iso-proteinous diets were prepared by replacing rice bran with inclusion of SM of 0% (T1), 4% (T2), and 8% (T3) and fed to replicate trials of individual males, individual females, and mixed sex tilapia. The results showed that the highest values of feed efficiency (FE) and specific growth rate (SGR) in each rearing condition were observed in T3. There were significant differences (P < 0.05) of FE and SGR for the individual male and mixed sex experiment trials between T1 and T3, however, there were no significant differences for individual female trials. The results of the length-weight relationship showed that there were significant differences (P < 0.05) between individual males and individual females according to the condition factor which showed a positive allometric (b > 3) exponential growth in individual males, while the individual female trials showed a negative allometric (b < 3) growth pattern at each level of SM inclusion. It is concluded that 8% SM produced the best results for growth performance in Nile tilapia.
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