Person: PETEK, METİN
Loading...
Email Address
Birth Date
Research Projects
Organizational Units
Job Title
Last Name
PETEK
First Name
METİN
Name
12 results
Search Results
Now showing 1 - 10 of 12
Publication Effects of non-feed removal molting methods on egg quality traits in commercial brown egg laying hens(Elsevier, 2008-01-01) Çıbık, R.; Petek, M.; Gezen, S. S.; Alpay, F.; ÇIBIK, RECEP; PETEK, METİN; BAYRAMİÇ, ŞERİFE ŞULE; ALPAY, FAZLI; Veteriner Fakültesi; 0000-0003-0708-3833; AAE-4562-2019; B-1526-2018; CJW-9519-2022; DNZ-6767-2022Publication Effects of season, plumage colour, and transport distance on body weight loss, dead-on-arrival, and reject rate in commercial end-of-lay hens(MDPİ, 2021-06-01) Çavuşoğlu, Enver; Petek, Metin; Çavuşoğlu, Enver; ÇAVUŞOĞLU, ENVER; Petek, Metin; PETEK, METİN; Veterinerlik Fakültesi; 0000-0002-9018-3511; ABE-4828-2020Simple Summary The transport conditions of end-of-lay hens to slaughterhouses are essential for their welfare. In this study, the effect of season, plumage colour, and transport distance on body weight loss, dead-on-arrival rates, and reject rates was examined. Transport-related data of 31.6 million end-of-lay hens over a two-year period from one slaughter plant in Turkey were analysed. Hens transported in the winter and spring seasons had a greater body weight loss and reject rates. Brown-feathered hens had a higher death rate, while white-feathered hens had a higher body weight loss and reject rate. Hens transported longer distances for slaughter had increased body weight loss, death rates, and reject rates. These results indicate that more care should be taken when transporting end-of-lay hens in cold weather and over longer transport distances. We suggest the transport should be reduced to a certain distance, and improved conditions ought to be provided to mitigate losses. Transport conditions of end-of-lay hens are important for their welfare. This study investigated the effects of season, plumage colour, and transportation distance on the welfare of end-of-lay hens. Retrospective data from 31,667,274 end-of-lay hens transported to a poultry slaughterhouse in Turkey were analysed. The mean body weight loss, dead-on-arrival (DOA) rate, and reject rate were 3.723%, 1.397%, and 0.616%, respectively. The effects of season, plumage colour, and transport distance on the evaluated parameters were all statistically significant (p < 0.001). The highest body weight loss was found in winter, while the lowest body weight loss was found in autumn. The average DOA rate was highest in spring and lowest in autumn. The highest average reject rate was found in spring (0.630%). Body weight loss, DOA rates, and reject rates were also significantly different among white and brown hens (p < 0.001; p < 0.001; p = 0.016, respectively). The highest body weight loss and reject rates were found in white plumage hens, while the highest DOA rate was found in brown plumage hens. The body weight loss and DOA rate were positively correlated with transportation distance (p < 0.001). The results of this study indicate that more preventive measures should be taken during the transport of end-of-lay hens, especially in cold seasons such as winter, and over longer transport distances, in regard to the welfare of these animals. Additionally, the transport of these animals should be lessened to a certain distance.Publication Influence of genotype and housing systems on the incidence of white striping, proximate composition, and sensory analysis of broiler breast meat(Aves, 2023-09-01) Çetin, Ece; Çetin, İsmail; Özbek, Melahat; Petek, Metin; PETEK, METİN; Veteriner Fakültesi; Hayvan Bilimleri BölümüThis study was carried out to investigate the influence of genotype and housing systems on the incidence of white striping, proximate composition, and sensory analysis of broiler breast meat. In total, 10 random breast muscle samples of male broilers from each of 6 interactive groups (fast and slow-growing broilers x deep litter, fully slatted flooring and free-range housing; 2 x 3:6), slaughtered at 56 days old, were collected and analyzed in the study. The proximate composition analysis was evaluated using the AOAC Official Methods of Analysis. The occurrence of white striping was determined by examining the pectoral muscles of the broiler in the groups. A 9-point hedonic scale was used for sensory analysis of meat samples. The crude ash, crude fat content, and cooking loss values of the fast-growing broilers meat samples were found greater than slow-growing broilers' meat (p < .02, p < .001, and p < .033), while meat samples of slow-growing broiler had significantly higher crude protein and water-holding capacity values (p < .001 and p < .002). The crude fat content of free-range meat and crude protein of the meat produced from the slatted floors were significantly greater than the others (p < .001 and p < .043). The prevalence of white striping in breast meat in fast-growing broilers was significantly greater than that of slow-growing broilers. The meat produced from the slatted floor had significantly greater values for odor intensity, flavor intensity, and overall acceptability than the meat produced from free-range and deep litter housing (p < .012, p < .017, and p < .006). In conclusion, it can be said that the housing system, genotype, and genotype x housing system interactions affected the broiler's breast meat quality characteristics. All nutritional characteristics of broiler breast meat and the occurrence of white striping are significantly affected by genotype. Planning further research in commercial conditions should be more useful to see the comprehensive effects of the factors investigated in this experiment.Publication Effects of lighting programme during growth period on laying performance of "out of season" laying hens(Indian Veterinary Journal, 2004-10-01) Petek, Metin; PETEK, METİN; Veteriner Fakültesi; Zooteknik Bölümü; DNZ-6767-2022Publication Siyah sarımsak tozunun etlik piliç büyüme performansı, karkas randımanı ve et kalitesi üzerine etkisi(Bursa Uludağ Üniversitesi, 2024-07-01) Bayat, Reyhane; Petek, Metin; Bayat, Reyhane; PETEK, METİNBu çalışma siyah sarımsak tozunun etlik piliç büyüme performansı, karkas randımanı ve bazı göğüs eti et kalite özellikleri üzerine etkisini incelemek amacı ile planlanmıştır. Çalışmada kontrol ve deneme grubu olmak üzere üçer tekrarlı iki ana grup yer almıştır. Her tekrarlı grupta 10 adet olmak üzere kontrol ve deneme gruplarında 30’ar adet, toplamda 60 adet, günlük yaşta Ross PM3 genotipi erkek etlik civciv kullanılmıştır. Kontrol grubunda yer alan hayvanlar standart etlik piliç yemleri ile beslenirken, deneme grubundaki hayvanlar standart rasyona %1 oranında ilave edilen siyah sarımsak tozu ile beslenmişlerdir. Deneme başında civcivler bireysel tartılarak homojen olarak kontrol ve deneme gruplarına dağıtılmış, haftalık tartımlar ile canlı ağırlık gelişimi izlenmiş, yemden yararlanma ve yaşama gücü belirlenmiştir. Çalışma 6 hafta devam etmiş, gruplarda yer alan hayvanlar büyütme dönemi sonu standart koşullarda kesilmişlerdir. Kesim sonrası karkas ağırlığı ve göğüs eti ağırlığı ile göğüs eti pH ve renk özellikleri belirlenmiştir. Canlı ağırlık bakımından gruplar arası farklılıklar t-testi ile, yemden yararlanma, karkas ağırlığı, göğüs eti ağırlığı ve et kalitesi özellikleri bakımından gruplar arası farklılıklar mann-whitney u testi ile, yaşama gücü bakımından gruplar arası farklılıklar khi-kare testi ile analiz edilmiştir. Kontrol ve siyah sarımsak tozu içeren yem ile beslenen deneme grubunda et kalitesi özelliklerinden a*, b*, chroma ve hue değerleri bakımından gruplar arası farklılıklar önemli bulunmuştur (P<0.05). Çalışmadan elde edilen değerler bütünüyle değerlendirildiğinde; çalışmada kullanılan oranda siyah sarımsak tozunun büyüme performansı ve karkas randımanı üzerine olumsuz bir etkisi olmadan piliç eti üretiminde kullanılabileceği sonucuna ulaşılmıştır. Siyah sarımsağın karkas üzerinde bırakabileceği kalıntı düzeyleri, rasyona katılabilecek en uygun miktarın belirlenmesi gibi konularda ve özellikle ticari koşullara uygun daha büyük popülasyonlarda yeni çalışmaların planlanmasının faydalı olacağı düşünülmektedir.Publication Proximate composition of leg meat of slow and fast-growing broiler in different housing systems(Istanbul Univ-cerrahpasa, 2022-01-01) Çetin, Ece; Çetin, İsmail; Özbek, Melahat; Petek, Metin; PETEK, METİN; Çavuşoğlu, Enver; ÇAVUŞOĞLU, ENVER; Veteriner Fakültesi; 0000-0002-9018-3511; ABE-4828-2020; FNV-0028-2022; DNZ-6767-2022The aim of this study was to evaluate the proximate composition of leg meat of slow- and fast-growing male broilers raised in different housing systems as conventional deep litter floor housing, indoor slatted floor housing, and indoor deep litter floor housing with range access (free-range). After slaughter at 56 days of age, 10 leg muscle samples of each 6 treatment group (2 x 3) were randomly selected and used to assess the meat quality properties. Compared to fast-growing chickens, slow-growing chicken meat had less protein content and higher fat content (p < .003, p < .05). There were significant differences in the water holding capacity of the meat between the slow- and fast-growing broilers (p < .05). The moisture content of the broiler meat produced from deep litter was found to be significantly greater than those of slatted floor housing and free-range (p < .041). The genotype x housing systems interaction for the fat content of leg meat of broiler was significant (p < .044). In conclusion, it can be said that genotype is more effective on proximate composition of broiler leg meat quality than the housing system.Publication Chick quality assesment: Visual scoring or chick length?(Elsevier, 2008-01-01) Petek, Metin; Orman, Abdulkadir; Alpay, Fazlı; Dikmen, Serdal; PETEK, METİN; ORMAN, ABDÜLKADİR; ALPAY, FAZLI; DİKMEN, SERDAL; Uludağ Üniversitesi; 0000-0001-9138-4422; 0000-0002-5611-4993; A-5731-2018; JPK-5654-2023; AAG-9134-2021; AAE-4562-2019Publication Comparison of some biomechanical properties of tibiotarsus in four different feather color lines of 60-day old female quails(Facta-fundacio Arnco Ciencia Tecnologia Avicolas, 2020-01-01) Süzer, Bayram; SÜZER, BAYRAM; Petek, Metin; PETEK, METİN; Tüfekçi, Kenan; TÜFEKCİ, KENAN; Arıcan, İlker; ARICAN, İLKER; Abdourhamane, Ibrahima Mahamane; Yıldız, Hüsnü; Mühendislik Fakültesi; Anatomi Ana Bilim Dalı; 0000-0002-2687-1221; 0000-0001-5358-1396; 0000-0001-6342-0094; 0000-0001-8789-3101; 0000-0003-2091-0303; GLV-3407-2022; AAG-7076-2021This study aimed to compare some morphological and mechanical measurements of four different color female quails to contribute to the formation of the morphological database.Quails are the smallest farmed avian species which are becoming more important for the poultry industry. They are also used as experimental animals and are valuable birds for researches. Genetic factors are important determinants of bone strength. Thus, skeletal disorders may be reduced by breeding selection in quails. Forty female quails with four different feather colors, including wild, white, yellow, and black, were compared at 60 days of age. Each quail group contained ten individuals. A three-point bending test was performed with a custom-made testing machine designed for low strength materials. No significant difference was found between the groups in terms of body weight. The tibiotarsus weight in wild and black (0,665 +/- 0,055g and 0,687 +/- 0,025g, respectively) was significantly lower than in the others but, the significant highest value was in white quails (0,758 +/- 0,063g) (p=0.001). Significantly shorter tibiotarsus was observed in the black quails (51,286 +/- 1,374mm), while the tibiotarsi of the white and yellow quails were the tallest (53,216 +/- 1,796mm and 53,083 +/- 1,092mm, respectively) (p=0.005). There were no significant differences among the groups in the biomechanical properties of tibiotarsus, except stiffness. Stiffness was the highest in the white quails (109,500 +/- 3,807 N/mm) and the lowest in the black quails (99,000 +/- 9,498 N/mm) (p=0.042). In conclusion, white quails have been observed to have relatively better bone biomechanical properties compared to the other color groups at 60 days of age.Publication Effects of genotype and housing system on some bone biomechanical characteristics in broiler chickens(Ankara Üniversitesi, 2019-04-21) Süzer, Bayram; Tüfekci, Kenan; Arıcan, İlker; Petek, Metin; Abdourhamane, Ibrahima Mahamane; Özbek, Melahat; Yıldız, Hüseyin; SÜZER, BAYRAM; TÜFEKCİ, KENAN; ARICAN, İLKER; PETEK, METİN; Abdourhamane, Ibrahima Mahamane; Özbek, Melahat; YILDIZ, HÜSEYİN; Veteriner Fakültesi; Makina Mühendisliği Bölümü; 0000-0002-2687-1221; 0000-0001-5358-1396; 0000-0001-6342-0094; 0000-0001-8789-3101; AAG-7076-2021; AAA-1366-2021; X-2000-2019; AAG-7518-2021; DNZ-6767-2022; EKQ-7243-2022; FNV-0028-2022The aim of this study was to determine the effects of two genotypes (slow-growing and fast-growing) and three housing systems (deep litter, plastic slat and free-range) on some bone biomechanical properties of broiler chickens and to evaluate the interaction between genotype and housing systems. Broilers from two genotypes were reared at three different housing conditions. Fifteen bones were randomly selected from each housing system in both slow-growing and fast-growing groups, and the experiment was performed on 90 bones in total. To determine bone characteristic and biomechanical traits of tibiotarsi, bones collected from right leg and then weighed, cortical area measurements and three-point bending tests were applied. Both live body weight and carcass weight were significantly affected by genotype and housing systems. There was no interaction between genotype and housing system in terms of bone weight, cortical area, breaking strength, bending strength, and deflection. Also, housing systems had no statistical effect on these parameters. Fast-growing broilers were significantly had heavier tibiotarsi, larger cortical area and higher breaking strength than slow-growing broilers, while bending strength was significantly lower in fast-growing broilers. Deflection was not affected by genotype or by housing system. In conclusion, bone geometry and biomechanical properties were not affected by housing systems but by genotype. Fast-growing broilers had better bone morphology and stronger bones than slow-growing genotype. Therefore, fast-growing genotype can provide positive effects on bone growth and mechanical properties in broilers.Publication Health-based welfare indicators and fear reaction of slower growing broiler compared to faster growing broiler housed in free range and conventional deep litter housing systems(Routledge Journals, Taylor & Francis Ltd, 2022-07-22) Abdourhamane, Ibrahima Mahamane; Petek, Metin; PETEK, METİN; Veteriner Fakültesi; 0000-0001-8789-3101This study investigated the welfare of a slow-growing broiler with a commercially available fast-growing breed housed in a free-range and conventional deep litter housing system. There were four main groups (2 genotypes x 2 housing systems), and each main group consisted of 5 replicates. Ante-mortem and postmortem health-based welfare indicators with fear reactions and distribution of severity of them in 200 male chicks (100 slow growing, 100 fast growing) were investigated. All welfare parameters investigated were found to be significantly different between both broiler genotypes. No significant differences were detected for all broiler welfare parameters between the two housing systems. There were significant genotype x housing system interactions for breast dirtiness and feather cover of the birds (P ). In conclusion, it can be said that slow-growing broilers express more health-based indicators of positive welfare, and they might be more suitable for free-range broiler meat production. Planning further studies especially in commercial conditions that take into account economic efficiency as well as animal welfare and growth performance would be very beneficial.