Browsing by Author "Brav, Fahir Cankat"
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Item Effects of keel bone deviation on post-peak egg production in a commercial laying hen flock with different breast condition(Bursa Uludağ Üniversitesi, 2022-08-09) Abdourhamane, Ibrahima Mahamane; Petek, Metin; Brav, Fahir Cankat; Ünal, Cihan; Bursa Uludağ Üniversitesi/Veteriner Fakültesi/Zootekni Anabilim Dalı.; 0000-0003-4560-2438; 0000-0003-0557-9720; 0000-0002-6378-5736This study was made to investigate the effects of breast condition and keel bone deviations on post-peak egg production of a commercial laying hen housed in a multi-tier conventional battery cage. The birds divided into two groups according to presence of keel bone deviation at first. Then the birds further divided into two groups according to breast condition as well developed or relatively well developed. The laying hens were kept under identical management conditions for commercial laying hens during the study. Data about daily egg production, feed intake, mortality and egg weight was collected from 62 to 77 weeks of age in the groups. There were no significant effects of keel bone deviation on body weight and egg weight of the layer hens. The initial and final body weight of the birds are significantly different between the breast condition groups (P<0.001). The birds with well developed breast condition had significantly better hen-housed and hen-day egg production (P<0.001). The significant keel bone deviation x breast condition interaction for egg production revealed that presence of keel bone deviation was effective in birds only had relativelly well developed breast condition (P<0.001). Daily feed intake per hen and survival rate between the groups were not affected by presence of keel bone deviation and breast condition of the birds. Results from this study indicated there was a link among breast condition, presence of keel bone deviation and egg performance of laying hens.Publication Fattening performance and carcass traits of imported simmental bulls at different initial fattening age(Sivar-soc Italiana Veterinari Animali Reddito, 2020-08-01) Ustuner, Hakan; ÜSTÜNER, HAKAN; Ardicli, Sena; ARDIÇLI, SENA; Arslan, Oznur; Brav, Fahir Cankat; Bursa Uludağ Üniversitesi/Veteriner Fakültesi; 0000-0003-2758-5945; O-3394-2019; AAG-9127-2021Fattening performance is one of the most important traits in cattle breeding. These traits are closely associated with adequate initial weights and slaughter endpoints. In this context, the aim of this study was to investigate optimum initial fattening age of imported Simmental young bulls and to provide a detailed analysis of initial fattening age effects on fattening performance and carcass characteristics. Seventy five animals were purchased from a single commercial farm where they had been reared under identical production conditions and were allocated into four groups according to age and live-weight as follows: Group I (4 months of age), Group II (6 months of age), Group III (8 months of age), and Group IV (10 months of age). All animals were housed in semi-open pens and were fed ad libitum with the same appropriate diet for 12 months. The animals were slaughtered in a commercial abattoir according to standard routines and carcass traits including hot and chilled carcass weights, dressing percentage, and chiling loss were determined. Morever, performance traits including total weight gain, feed conversion rate, average daily weight gain, and dry matter intake were estimated. Results revealed that the initial fattening age of bulls showed significant effects on total weight gain and chilled carcass dressing. In this context, Group I was characterized by the highest total weight gain, whereas, Group IV had the highest values for chilled carcass dressing. During early fattening periods, first three periods, average daily weight gain was significantly different among the treatments. This study pointed out that, concerning importation, younger Simmentals with the initial fattening age of four months may be more suitable and profitable for medium-term fattening. The present results may have a potential to influence adequate management practices in Simmental farms, and moreover, the recent strategies for importation of cattle.