Growth performance of two strains of Clarias gariepinus in indoor and outdoor concrete tanks
Six indoor concrete tanks ( 1.5m x 2.0m x 1m) were stocked with 120 C. gariepinus fingerlings (9.52 ~c 52g). Six outdoor concrete tanks (2m x 2m x lm) were stocked with 240 fingerlings (9.66 ~c 1.52g). The fish samples were collected from Osi Ekiti, Ekiti State and from the National Institute for Freshwater Fisheries Research hatchery, New Bussa, Niger State, both in Nigeria. The fish were acclimatized for three days and were fed with coppens feed. The experimental feed had crude protein level of 40.5% and was fed to the fish for 51 days in two treatments indoor and outdoor. There was no significant variation (p> 0.05) in the mean initial weight, mean final weight, mean weight gain, food conversion ratio, protein intake, specific growth rate and percentage survival of fish stocked indoors. There was significant difference (p< 0.05) in the protein effic1ency ratio of fish fed indoors. There was significant difference (p< 0.05) in the mean weight gain. mean final weight, food convertion ratio, protein intake and protein efficiency ratio of two strains of fish fed the diet outdoor. There was no significant difference (p> 0.05) in the specific growth rate and percentage survival of the two strains of fish fed outdoor. The highest weight gain was ohserved in the outdoor fish from Osi and the lowest weight gain was recorded in the indoor from New Bussa.
| Main Authors: | , |
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| Format: | conference_item biblioteca |
| Language: | English |
| Published: |
FISON
2013
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| Subjects: | Aquaculture, Ecology, Clarias gariepinus, Nigeria, Growth, C. gariepinus, Indoor, Outdoor, freshwater environment, automation, |
| Online Access: | http://hdl.handle.net/1834/38999 |
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