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Articles by Alper ONENC
Total Records ( 2 ) for Alper ONENC
  Tulin Aksoy , Dogan Narinc , Deniz Ilaslan Curek , Alper Onenc and Nilgun Yapici
  The aim of this research was to compare fast (Ross 308) and medium-growing (Hubbard ISA Red JA) broilers for growth performance and slaughter results under indoor conditions. In total 560 chicks from Fast (FG) and Medium-Growing (MG) genotypes were housed in 16 floor pens (12 chicks m-2). Feed and water were offered ad libitum and the lighting period was 18 h day-2 after the first week. All birds were fed with starter diet (21.9% CP, 3020 kcal ME kg-1) for the first 3 weeks and then grower diet (19.5% CP, 3127 kcal ME kg-1) was used. Death, body weight and feed consumption were recorded. Chickens were slaughtered at 56 days of age. Slaughter losses, carcass, giblets, abdominal fat and carcass parts weight were determined. Sensory characteristics of whole raw carcasses were evaluated by 5 panellists with a 7-point scale. Mortality rates were compared by the Mann Whitney-U test and the others with the t-test. FGs had higher body weight gain and feed consumption than MGs during the fattening period (p<0.001). Mortality of MGs (2.78%) and FGs (2.43%) were similar. MGs showed higher head, feet + shanks, offal, giblets and fat pad percent (p<0.05). Hot carcass yields were 75.7 and 72.8% for FG and MG (p<0.001). FGs took higher values for raw carcass sensory traits as conformation, subcutaneous fatness and surface colour (p<0.05). Breast and breast meat yield were higher in FGs, however MGs showed higher means for legs, wings, neck and back percent. Taking into account the performance and slaughter results, MGs are disadvantaged compared to FGs.
  Ahmet SAHIN , Bulent MİRAN , Ibrahim YILDIRIM , Alper ONENC and Ahmet ALCICEK
  The primary purpose of this study was to calculate the fattening costs of different cattle breeds reared under controlled conditions and to determine the optimal fattening period that will maximize the net profit. The data were from 21 bullocks consisting of 7 Holstein, 7 Piedmont Holstein, and 7 Limousin x Holstein cross-breed cattle reared and fattened in the closed tie-stall experiment barns of the Aegean Agricultural Research Institute, Turkey. The data used for the analysis were from the year 1999, but were updated for 2007. The fattening period lasted 280 days, after a rearing period of 195 days. The average live weight, costs of 1 kg live weight, yield ratio, and net profit per animal at the end of fattening period were 510.86 kg, YTL 3.65, 57.36%, and YTL 462.33, respectively. The Limousin breed yielded the highest net profit. The optimal fattening period was 5 months. Net profit increased by 21.67%, while the costs of 1 kg live weight decreased by 13.97% at optimal fattening relative to the fattening period in the application. Live weight, yield ratio, meat price, gross production value, production costs, and net profit per animal differed significantly among the Holstein, Piedmont, and Limousin breeds. The results indicated clearly that the optimal fattening period (5 months) yielded much more net profit in comparison with the fattening period in the application. It appears possible to arrange different plans for different cattle breeds.
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