The effects of animal protein on the feeding rate of tilapia (Oreochromis niloticus) in concrete tank
An experiment was carried out to determine the effect of blood and fish meal based diets on the feeding rate of tilapia in concrete tank. Two diets formulated at 35% CP, with blood and fish meal as the test ingredients. The diets were fed to tilapia (25/tank, with average initial weight of 7.61g) at 1, 1.5 and 2.5% biomass, in three replicates, once daily, in a 2:3 factorial design. Result showed that under blood meal based diet, average weight gain, gain in total length, relative weight gain and specific growth rate increased from 1 to 1.5% biomass and reduced at 2.5% ( 10.61, 16.75, 14.51g; 1.84, 3.18, 2.86cm; 147.37, 238.42, 147.42%; and 0.61, 0.85, 0.64 %/day), respectively (p<0.05). Under fish meal based diet, the same parameters increased as feeding rate increased from 1 to 2.5% biomass ( 8.25, 16.55, 29.09g; 2.38, 2.67, 4.35cm; 125.07, 213.79, 408.63% and 0.52,0.82, 1.10%/day), respectively, (p<0.05). In conclusion, blood meal based diet at 35%CP requires a feeding rate of 1.5% biomass, while fish meal based diet requires at least 2.5% for tilapia production in concrete tanks.
| Main Authors: | , , |
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| Format: | conference_item biblioteca |
| Language: | English |
| Published: |
FISON
2012
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| Subjects: | Aquaculture, Ecology, Oreochromis niloticus, Nigeria, Port Harcourt, comparative effect, Blood meal, Fish meal, Diets, Growth performance, freshwater environment, Proteins, Feeding experiments, Freshwater fish, Feed, Fish culture, Culture tanks, Feed efficiency, Comparative studies, |
| Online Access: | http://hdl.handle.net/1834/38851 |
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