NDLI: Replacement of fishmeal in cobia (Rachycentron canadum) diets using poultry by-product meal

Content Provider	Springer Nature Link
Author	Saadiah, I. Abol Munafi, A. M. Che Utama, C. M.
Copyright Year	2010
Abstract	An 8-week feeding trial was conducted to evaluate the use of local poultry by-product meal (PBM) in replacement of imported fishmeal in the diets of cobia, Rachycentron canadum. Six isolipidic (12%) and isoproteic (45%) experimental diets were formulated using PBM to replace fishmeal at 20, 40, 60, 80 and 100% dietary protein. Eleven juvenile cobia (initial mean weight of 30.7 ± 0.78 g) were randomly stocked in 300-L circular fibreglass tanks and hand-fed based on the total biomass of each tank, twice a day at 0900 h and 1500 h. The fish were group weighed at 2-week intervals to monitor their growth performance in order to adjust the feeding ratio. At the end of the feeding trial, weight gains (WGs) ranging from 221 to 322% were obtained. The specific growth rate (SGR), WG and protein efficiency ratio (PER) for fish fed with PBM-based diets were not significantly different (P > 0.05) when compared to fish fed the control diet. The best SGR was recorded for fish fed with 60PBM diet, which was significantly higher (P < 0.05) than those fed the control diet with values at 2.40 ± 0.01 and 1.97 ± 0.26%/day, respectively. The FCR of 1.83 ± 0.05 for fish fed the 60PBM diet was not significantly different (P > 0.05) when compared to those fed the control diet. The PBM source and dietary level did not significantly (P > 0.05) affect the hepatosomatic index of the fish. The results from this study suggested that PBM could replace 100% dietary fishmeal without adversely affecting the growth performance, but an optimal replacement level at approximately 60% was recommended for better growth performance and efficient feed utilization.
Starting Page	637
Ending Page	648
Page Count	12
File Format	PDF
ISSN	09676120
Journal	Aquaculture International
Volume Number	19
Issue Number	4
e-ISSN	1573143X
Language	English
Publisher	Springer Netherlands
Publisher Date	2010-09-30
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Cobia Nutrition Fishmeal Poultry by-product meal Specific growth rate Freshwater & Marine Ecology Zoology
Content Type	Text
Resource Type	Article
Subject	Aquatic Science Agronomy and Crop Science

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