Effects of Utilizing Disposed Fish of White Nile River on Performance of Layers', Gezira, Sudan
الموضوعات :ج.ای. سالیح 1 , م.اس. النور 2 , آ.ای. عبد-الگابر 3 , م.آ. دفالاه 4 , م.آ.ای. الخیری 5
1 - Department of Poultry Production, Faculty of Animal Production, University of Gezira, Sudan
2 - Department of Poultry Production, College of Animal Production, University of Bahri, Khartoum, Sudan
3 - Department of Poultry Production, Faculty of Animal Production, University of Gezira, Sudan
4 - Department of Poultry Production, Faculty of Animal Production, University of Gezira, Sudan
5 - Department of Poultry Production, Faculty of Animal Production, University of Gezira, Sudan|College of Animal Science and Technology, Northwest A and F University, Yangling 712100, Shaanxi, China
الکلمات المفتاحية: layers, disposed fish, egg characteristics, indirect boiling, Roasting,
ملخص المقالة :
An experiment has been performed to utilize the wasted and disposed fish from White Nile River after simple heat treatments (Sun drying, roasting, direct boiling and indirect boiling) in layers’ rations from 19 up to 40 weeks to replace the imported concentrate with the levels of 0, 1.5, 3.5 and 5% for all heat treatments. The crude protein of treated fish was 50.75, 52.50, 50.55 and 50.05% for sun drying, roasting, direct boiling and indirect boiling, respectively and for super concentrate 31.50%. Rations had been formulated according to NRC, 1994 recommendations. A total of 390 birds of Hy-line W-98 at 19 week of age were randomly distributed for groups, 5 group (6 replicate/13 birds). The performance of layers during the productive period (22 up to 40 weeks) showedsignificant differences (P<0.05) for feed intake, body weight gain, egg production and egg quality characteristics among treatment groups. The sun dried, roasted and supper concentrate respectively had the highest feed intake and body weight, while indirect boiling and boiling fish showed the lowest one. Sun dried 1.5%, roasted 1.5 and 3.5% levels and supper concentrates were the best egg production percentages and weights while the indirect boiling and direct boiling treatments were the lowest ones. There were no any significant differences among treatments for egg shell, weight, shell thickness and panel test. The study recommended the utilization of local wasted and disposal fish of White Nile River in substitution of importedconcentrates in layers rations.
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