Evaluation of Partial Replacement of Fish meal with Samh seeds Mesembryanthemum forsskaolii in Feed of Nile Tilapia Oreochromis niloticus PDF

Keywords

Fish farm, Nile tilapia, Fish meal, Samh meal, protein source

Abstract

Triplicate groups of Nile tilapia, Oreochromis niloticus, initial mean body weight (2.7+ 0.1gm) were fed for 8 weeks, 56 days 112 diets) on (5) isoprotein and isoenergetic diets. Samh meal was used to replace fish meal at different levels of protein. The control diet (diet 1) contained fish meal as the sole protein source. (100, 200, 300 and 400 gm) of samh meal was added to one of the other four diets to replace a protein from fish meal. Fish were fed ad libitum to satisfy twice a day. The results showed that all diets were not rejected and were well consumed by fish in all five treatments. All growth parameters were not affected (P< 0.05) by incorporation of any level of samh meal final weight was (18.8, 18.7, 16.9, 16.0 and 16.9gm); specific growth rate (SGR) was (3.44, 3.48, 3.31, 3.14 and 3.26); protein efficiency ratio (PER) was (2.91, 2.84, 2.72, 2.51 and 2.70); protein productive value (PP) was (48.25, 46.63, 43.43, 41.62 and 43.58) for diets numbers (1, 2, 3, 4 and 5 respectively). The whole body compositions: moisture, crude protein, crude lipid and ash were not affected (P< 0.05) either by incorporation of any level of samh meal for all dits.