Browsing by Author "أحمد محمد موسى أحمد"

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    غذاء بعض اسماك النيل الابيض التجارية (جبل اولياء) العجل ، القرموط ، الشلبايا ، الكاس ، البلطي النيلي ، الدبس و الخرشة
    (جامعة النيلين, 2006-06) أحمد محمد موسى أحمد
    Abstract This study is intended to know the type oi") bod consumed by 7 species offish selected from Jcbcl Aulia Dam on the White Nile. These selected species are Lates niloticus (lgil ), Clarias lazera (Gannut), Schilbe mystus ( Shilbiya) Hydrycon l‘0rskalli (Kas) Oreochromis niloticuas (Buiti Nili) labco niloticus (Dabs), and Distichodus niloticus ( Kharsha). The study concludes that Lates niloticus, Clarias lazerzv Schilbe mystus and Hydiycon forskalii mainly feed on Kawara< Buiti Nili rzooplankton and insects ‘consequently are considered as ( Carnivorus). Also the study concludes that Oreochrous niloticus ¢Labeo niloticus and Distichodus niloticus feed on green algae‘ phytoplankton ‘plant dcbries and plant tissue, consequently these species may be considered as ( Herbivorous). When the Oroehromis niloticus grows in size (15-25 cm) its feed decreases towards plant food. It is also noted that 20% of these species feed on other types of food) Zooplankton( which may be classified as (Omnivorous fish). These results will have important applications in commercial fish culture in Sudan.