Ahmet Uçar
Ankara University
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Publication
Featured researches published by Ahmet Uçar.
British Poultry Science | 2016
Umut Sami Yamak; Musa Sarica; M. A. Boz; Ahmet Uçar
Abstract 1. A total of 400 Alectoris chukar partridges were reared in either barn or free-range production systems and slaughtered at 14, 16 or 18 weeks of age in order to determine the effects of production system, age and gender on carcass traits (live weight, carcass weight, carcass yield, carcass part and edible inner organ percentages at slaughtering) and meat quality (L*, a* and b* meat colour and pH). 2. Production system had a significant effect on both slaughter traits and meat quality. 3. Partridges raised in barn conditions had higher live weights and carcass weights whereas meat quality was better in birds raised in the free-range system.
Brazilian Journal of Poultry Science | 2016
Umut Sami Yamak; Musa Sarica; Ma Boz; Ahmet Uçar
Incubation is an important factor in poultry production, particularly in species with relatively low fertility and hatchability rates. This study examined the effect of eggshell thickness on hatching traits of partridges (A. chukar). A total of 462 eggs from intensively reared partridges were separated into three groups according to eggshell thickness, which was measured ultrasonically before incubation. Hatchability, chick weight, and chick length were assessed at the end of the incubation period. Hatching times were recorded during hatching. Embryonic mortalities in unhatched eggs were classified according to mortality stage at the end of incubation. The effect of eggshell thickness on hatchability was found to be insignificant for all groups. Moreover, eggshell thickness had no significant effect on chick weight or length.
Brazilian Journal of Poultry Science | 2016
Umut Sami Yamak; Ma Boz; Ahmet Uçar; Musa Sarica; Hasan Önder
Successful incubation affects the number of healthy chicks in all poultry species. This study examined the effect of eggshell thickness on the hatching rates of guinea fowl and pheasant eggs. In total, 964 guinea fowl and 1,728 pheasant eggs were used in the study. Eggshell thickness was measured directly with an ultrasound gauge. Thicknesses ranged between 0.27-0.47 mm in guinea fowl and 0.24-0.49 mm in pheasant eggs. Incubation periods were 28 days for guinea fowl and 25 days for pheasant eggs. At the end of the incubation period, unhatched eggs were broken to identify the causes of embryonic mortality. Eggs were classified as thin-, medium- and thick-shelled, and hatching rates were calculated as a function of eggshell thickness. Differences in hatching rates of guinea fowl and pheasant eggs with different shell thicknesses were not statistically significant (p>0.05).
Poultry Science | 2018
Umut Sami Yamak; Musa Sarica; M A Boz; Ahmet Uçar
ABSTRACT A total of 200 guinea fowl was reared in either barn or free‐range systems and slaughtered at 14, 16, or 18 wk of age in order to determine the effects of production system on live weight, feed consumption, and some carcass and slaughter traits. Production system had a significant effect on live weight until 14 wk of age. Live weights were similar between free‐range and indoor production systems at 16 (1,150 g vs. 1,152 g) and 18 (1,196 g vs. 1,203 g) wk of age. Guinea fowl reared in a free‐range system consumed more feed (7,693 g vs. 6,983 g), and guinea fowl reared in a barn had better feed conversion ratio (5.80 vs. 6.43) (P < 0.05). Production system, gender, and slaughter age did not affect the dressing percentage. Guinea fowl reared in a free‐range system had significantly less abdominal fat (P < 0.05).
Turkish Journal of Agriculture: Food Science and Technology | 2018
Ahmet Uçar; Musa Sarica
Turkish Journal of Agriculture: Food Science and Technology | 2018
Ahmet Uçar; Mesut Türkoğlu
Turkish Journal of Agriculture: Food Science and Technology | 2018
Ahmet Uçar; Mesut Türkoğlu; Musa Sarica
Tarim Bilimleri Dergisi-journal of Agricultural Sciences | 2016
Musa Sarica; Vedat Ceyhan; Umut Sami Yamak; Ahmet Uçar; Mehmet Akif Boz
Archive | 2016
Nursel Develi; Mesut Türkoğlu; Nezih Okur; Ahmet Uçar; Serdar Özlü
Journal of Poultry Research | 2016
Hasan Eleroğlu; Nursel Develi Işıklı; Mesut Türkoğlu; Nezih Okur; Ahmet Uçar; Serdar Özlü