Effects of feed forms and feeding frequency on growth performance and nutrient utilization of Clarias gariepinus fingerlings
2009
Ajani, F., Bowen University, lwo (Nigeria). Department of Animal Science and Fisheries Management, | Dawodu, M.O., Bowen University, lwo (Nigeria). Department of Chemistry, | Bello-Olusoji, O.A., Fed. University of Technology, Akure (Nigeria). Department of Wildlife and Fisheries Management,
Experimental trial was conducted at the laboratory of Bowen University, Iwo, Nigeria. A total of 360 Clarias gariepinus fingerlings obtained from a reputable fish farm in Ibadan. Nigeria, weighing on average 3.05 +/- 0.25g, was divided equally into eighteen 30L glass tanks: 20 fish were held in each tank. On the whole there were three feeding frequencies (Once meal per day- 9hour, two meals per day - 9hour and 14hour and three meal per day – 9hour, 14hour and 18hour) using two different feed forms (floating and sinking pellets), thus giving a total of 6 treatments in a 3 by 2 factorial experimental design. A commercial floating pellet (CHI feed(R) of 50% C.P. level was used for this experimental trial while 50% C.P sinking pellet was formulated and prepared locally. Dechlorinated tap water was used to replace 80% of the water volume every four days before feeding. Aerator was used to aerate the glass tanks. In conclusion: There was no significant difference in weight gain in fish fed floating and sinking pellet of the same crude protein level (50% C.P.) although fish fed floating pellet exhibited higher weight gain. Also, no significant difference was observed among the fish fed at different feeding frequencies at 5% body weight (once, twice, thrice/day). A significance difference was obtained in fish fed floating and sinking pellet once and this is due to the crumbling nature of the sinking pellet within a short time. It was also revealed from this experiment that floating pellet can be fed at the three feeding frequencies effectively for optimum result while the best feeding frequency for sinking pellet in order to obtain optimum result is twice and thrice per day.
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