INTERNATIONAL JOURNAL OF AGRICULTURAL TECHNOLOGY

Volume 16, No. 04, Month JULY, Year 2020, Pages 831 - 844

Mango seed meal as partial replacement in diet for red hybrid tilapia (oreochromis niloticus ? o. mossambicus): growth performance, feed utilization and economic efficiency

Khieokhajonkhet, A.

Abstract Download PDF

The effects on the supplemention of mango seed meal (MSM) with different levels in diets for red hybrid tilapia (Oreochromis niloticus × O. mossambicus) was investigated . Five experimental diets were formulated containing the different levels of MSM from 0, 5, 10, 25, and 50%. Each group of 20 fish was randomly distributed into 15 glass tanks in triplicates. The fish were fed to apparent satiation twice daily for 8 weeks. The results showed that fish fed diet containing 10% MSM had higher final body weight (FBW), weight gain, average daily gain (ADG), specific growth rate (SGR), feed efficiency (FE) and feed efficiency ratio (FER) than those of other experimental diets. No significant difference was observed in growth performance in fishes fed with a diet containing 25% MSM compared with 10% MSM group. While FBW, weight gain, ADG, and SGR were significantly reduced with increasing MSM higher than 25% replacement. These results indicated that 10% of MSM replacement could improve growth performance without any adverse effects. Based on SGR and FBW, the optimum dietary MSM inclusion in diet was estimated to be around 17.14 ‒ 17.46 g kg‒1 of dry weight predicted by second-order polynomial regression analysis.

Keywords

Mango seed meal, Nile tilapia, Replacement, by-product, Polynomial regression

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