Person: ÇAVUŞOĞLU, ENVER
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ÇAVUŞOĞLU
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ENVER
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Publication 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 Attitudes of turkish veterinary students towards farm animal welfare(Univ Federation Animal Welfare, 2021-08-01) Çavuşoğlu, Enver; Uzabacı, Ender; ÇAVUŞOĞLU, ENVER; UZABACI, ENDER; Veteriner Fakültesi; Zootekni Ana Bilim Dalı; 0000-0002-9018-3511; 0000-0002-9634-0055; JPL-5273-2023; ABE-4828-2020People's awareness of livestock welfare has increased in recent years and veterinarians have a critical role to play in maintaining and improving these standards. The aim of this study was to explore the attitude of veterinary students to livestock welfare and an online questionnaire was utilised to gauge the opinions of students from the Bursa Uludag University Faculty of Veterinary Medicine in Turkey. A five-point Likert scale covered judgments ranging from 'Strongly disagree' to 'Strongly agree.' Female students were found to have a higher score for questions related to the welfare of livestock than males. It was also found that students yet to undertake courses in clinical science and animal welfare, ie first and second years, gave higher scores than third, fourth and fifth years who had completed both of these. Moreover, students having owned or dealt previously with livestock provided lower animal welfare scores than their counterparts who had done neither. Seemingly, the sensitivity of veterinary students decreases during the latter stages of their education. To conclude, we suggest further investigation into the extent to which veterinary medicine education influences students' attitudes to animal welfare as they progress through the course.Publication What is the best first-calving age of cows in robotic milking farms?(Taylor & Francis Ltd, 2022-12-31) İlhan, Gürkan; Çavuşoğlu, Enver; Orman, Abdulkadir; İlhan, Gürkan; ÇAVUŞOĞLU, ENVER; ORMAN, ABDÜLKADİR; Sağlık Bilimleri Enstitüsü; Hayvan Bilimleri Ana Bilim Dalı; 0000-0002-9018-3511; 0000-0001-9138-4422; ABE-4828-2020; AAG-9134-2021; CWG-8158-2022The aim of this study is to determine the effect of first-calving age (FCA) on yield parameters and productive life in dairy farms using a robotic milking system in Turkey. The cows (n = 1579) were divided into five groups (24, 25, 26, 27, 28 months and above FCA. The average milk yield was highest in 24 months of FCA (9140.31 +/- 145.55 kg) and was lowest in 27 months of FCA (8534.55 +/- 131.00 kg) (p < .05). The average service period length in the first lactation was longer in cows of 28 months old (158.92 +/- 7.28 days) than 26 and 27 months (131.96 +/- 4.45and 130.51 +/- 54.97 days respectively) old groups (p < .05). A number of lactations of cows that were 26 months old (2.52 +/- 0.09) at FCA was higher than those FCA was 24 months and 28 months (2.03 +/- 0.15 and 2.18 +/- 0.09 respectively) (p < .05). Replacement rates were not differing statistically at different lactations. The most frequent reasons for culling were mastitis and reproduction in all groups. As a result, cows in 24 months of FCA had no undesirable results in terms of milk yield, service period, number of insemination per lactation.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.