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Effect of Different Levels of Dietary Supplementation of Saccharomyces cerevisiae on Growth Performance, Feed Utilization and Body Biochemical Composition of Nile Tilapia (Oreochromis niloticus) Fingerlings
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| Mohammad Asadi Rad, Mohammad Zakeri, Vahid Yavari, Seyed Mohammad Mousavi |
| Khorramshahr University of Marine Science and Technology , zakeri.mhd@gmail.com |
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Abstract: (19647 Views) |
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This study was conducted to evaluate the effect of different levels of dietary supplementation of
Saccharomyces cerevisiae on growth performance, feed utilization and body biochemical composition of
Oreochromis niloticus fingerlings. Four diets containing supplementation at levels of 0, 0.5, 1 and 2 g kg−1
were fed to fingerlings of Nile tilapia (5.01±0.21 g) in four replicate tanks twice daily to apparent satiation
for 56 days. Growth performance increased significantly (P<0.05) with the increase in dietary yeast levels.
The highest growth was obtained at 1.0–2.0 g yeast kg−1 diet. The lowest feed conversion ratio was
obtained at 2.0 g yeast kg−1 diet. Linear relationship was found between dietary supplementation levels
and protein efficiency ratio. Hepatosomatic index did not display any significant difference among the
treatments. Whereas, Viscerosomatic index of O. niloticus fingerlings was significantly (P<0.05) affected
by various supplementation levels. S. cerevisiae quantity significantly (P<0.05) affected whole fish body
composition except for moisture and ash, which did not differ. The results of the present study indicated
clearly that the supplementation of S. cerevisiae (1.0 g yeast kg−1 diet) enhanced the growth performance
and feed utilization of O. niloticus fingerlings.
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| Keywords: Saccharomyces cerevisiae, Growth performance, Feed utilization, Body composition, Oreochromis niloticus fingerlings |
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Full-Text [PDF 175 kb]
(8116 Downloads)
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Type of Study: Basic and Original Research |
Subject:
Marine Biology & Biotechnology
Received: 2012/12/25 | Accepted: 2013/07/23 | ePublished: 2013/07/23
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