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Iranian Journal of Ichthyology، جلد ۱۲، شماره ۱، صفحات ۰-۰
عنوان فارسی
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عنوان انگلیسی Evaluation of a mixture of local feed ingredients for Nile tilapia juveniles reared in the south-east of Algeria
چکیده انگلیسی مقاله In order to reduce the cost of fish feeds, eight-week feeding study was conducted to assess the effect of partial substitution of fishmeal (FM) by a mixture of other locally available dietary protein sources, duckweed meal (DWM) and mealworm larvae meal (WLM), on growth, nutritional efficiency and profitability of O. niloticus juveniles (average initial weight, 3.87±0.63g). In total of 180 fish were reared in 12 glass aquariums of 80 L, i.e. 15 fish per aquarium, thus forming for four treatments each corresponding to one diet. The experimental diets were formulated to be isonitrogenous (35.35±0.04%, CP) viz; control diet (D0) and three test diets (D1, D2 and D3) containing a combination of different ratios (1:5, 2:4 and 4:2) on DWM and WLM, respectively. There were no significant differences (P>0.05) on the growth and feed utilization parameters in fish fed on the tested diets. While, the carcass compositions of the experimental fish and their profitability were showed a significant differences (P<0.05). The obtained results also proved that the inclusion of these neglected products in aquafeed could maintain O. niloticus juveniles growth performance, not negatively affect them, and reduce the use of FM by one third. Consequently, reducing feed production costs and making fish farming more sustainable in the country.
کلیدواژه‌های انگلیسی مقاله Alternative protein,Growth,Nile tilapia,Profitability
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نشانی اینترنتی http://ijichthyol.org/index.php/iji/article/view/1037
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