Browsing Qatar University Science Journal - [From 1981 TO 2007] by Author "Abdel-Tawwab, Mohsen"
Now showing items 1-3 of 3
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Comparative Growth Performance and Feed Utilization of Four Local Strains of Nile Tilapia (Oreochromis niloticus L.) Collected From Different Locations in Egypt
Abdel-Tawwab, Mohsen; عبد التواب, محسن ( Qatar University , 2003 , Article)Brood stocks of Nile tilapia (Oreochromis niloticus L.) were collected from Lakes ofNasser (Aswan), Manzalah, Maryut and Abbassa fishponds. Fingerlings ofFI of each strain was fed diet containing 27% CP for 90 days. The ... -
Effect of Different Doses of Inorganic Fertilizer on Water Quality, Primary Productivity and Production of Nile Tilapia (Oreochromis niloticus) in Earthen Ponds
Abdel-Tawwab, Mohsen; Abdelghany, Ali E.; El-Ayouty, Yassin M.; El-Essawy, Abdel-Fattah A. ( Qatar University , 2002 , Article)Earthen ponds (surface area 155 m2 each) were used to study the effect of different doses of inorganic fertilizer on water quality and fish production. Each pond was stocked with 150 fish of Nile tilapia; Oreochromis ... -
Occurence of Phytoplankton in Stomach Content and Its Selectivity by Nile Tilapia (Oreochromis niloticus L.) Cultured in Fertilized Earthen Ponds
Abdel-Tawwab, Mohsen ( Qatar University , 2003 , Article)Nile tilapia (Oreochromis niloticus L.) was cultured in earthen ponds receiving 0, 20, 40, 60 and 100 kg/feddan/month of inorganic fertilizer (20:20:5 N:P:K). The obtained results showed that the composition percentage of ...