UTILIZATION OF INEDIBLE DRIED DROPPING DATES AS A DIETARY ENERGY SOURCE FOR BLUE TILAPIA (Oreochromis aureus) REARED IN ENCLOSURE NETS. | ||||
| Journal of Animal and Poultry Production | ||||
| Article 6, Volume 29, Issue 1, January 2004, Page 73-82 PDF (126.48 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jappmu.2004.238995 | ||||
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| Authors | ||||
| A. A. l. Nour,1; T. M. srour2; Omnia Nour3 | ||||
| 1Department of Animal Production, Faculty of Agric. (Oamanhour), Alex. Univ. AJex., Egypt. | ||||
| 2Department of Animal and Fish Production, Faculty of Agric. (Saba Bacha), Alex. Univ., Alex., Egypt. | ||||
| 3Department of Agricultural Economics, Faculty of Agric., Alex. Univ. AJex., Egypt. | ||||
| Abstract | ||||
| Feeding experiment was conducted in enclosure nets (100 X 100 X 100 cm in diameter) to assay partial and total substitution 0 f Inedible dried dropping dates (1000) without kemels instead of yellow com for blue tilapia Oeochromis aureus (11.5 glfish). Five isonitrogenous diets (30 % crude protein) were formulated with different substitution levels of 0.25,50,75 and 100 % 1000. The experimental diets were fed to duplicate groups of fish at a feeding rate of 2.5 % of body weight. The experiment lasted for fourteen weeks starting at 1'1 August. The results indicated that the chemical composition of 1000 was almost similar to yellow com. The higher values of growth performance, feed intake, protein efficiency ratio and carcass crude protein were recorded by fish received diets contained 1000 up to 50 % from yellow com. Meanwhile, the higher values of feed conversion, protein productive value, carcass dry matter content and gross energy were recorded by fish received diets contained 1000 25 %. With increasing the level of 1000 in the diet; energy utilization and ether extract decreased while carcass ash Increased comparing to the control diet. Economically, with increa~ing the inclusion of 1000 in the diet the cosVKg fish gain decreased. Finally the study suggested that 1000 could replace up to 50 % of yellow corn in the diet of blue til apia without any retardation in either growth performance or feed utilization. | ||||
| Keywords | ||||
| Date; T7/apia and Growth | ||||
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