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    Determination of Nutritional Value of Alfalfa Varieties and Lines by Using the In Vitro Method and Gas Production Technique
    (Hellenic Veterinary Medical Soc, 2022) Boga, M.; Ayasan, Tugay
    This study was organized to determine the nutritional value of different alfalfa varieties and lines selected within the scope of the Cukurova Region Alfalfa Breeding Project, conducted at the Eastern Mediterranean Agricultural Research Institute, by using the in vitro gas production technique. In the project, Nimet was certified as a new variety. The used alfalfa lines were YSH 26-12, YSH 23-9, YSH 21-1, YSH 27-9, YSH 37-12, YSH 35-11, YSH 28-6, YSH 16-11, YSH 14-3, and YSH 11-4. The certified Nimet variety was used as a control. Alfalfas have been harvested in April, at the beginning of blooming. Chemical composition, metabolic energy (ME), net energy lactation (NEL), and organic matter digestibility (OMD) of the certified Nimet variety with 10 different alfalfa lines used in the experiment were determined by Hohenheim in vitro gas production technique. The incubation times in the Hohenheim gas production technique are 3, 6, 9, 12, 24, 48, 72 and 96th hours. Crude protein (CP), crude cellulose (CC), NDF, and ADF contents of the alfalfa varieties and lines ranged between 19.06-22.40%, 24.90-33.30%, 33.16-45.73%, and 30.77-39.75%, respectively. After 96-hour incubation, the highest total gas production (GP) was found at the YSH 11-4 line (45.32 ml) (P < 0.05). While ME, OMD and NEL contents were found to be high at the YSH 11-4 line, ME and OMD values were statistically different from the YSH 28-6, YSH 16-11, YSH 14-3, and YSH 21-1 lines. On the other hand, NEL values were determined different from YSH 23-9, YSH 21-1, YSH 28-6, YSH 16-11, YSH 14-3 lines.
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    Differences in performance, carcass characteristics and meat quality between fast- and slow-growing broiler genotypes
    (Mattioli 1885, 2019) Dogan, Sibel Canogullari; Baylan, Mikail; Bulancak, Aycen; Ayasan, Tugay
    This study was conducted to determine the differences in performance, carcass characteristics and meat quality between fast- and slow-growing broilers. Ross-308 genotype was used as the fast-growing genotype, while local T2-Y2 genotype was used as the slow-growing genotype. The study continued until both genotypes reached acceptable market weight (2 kg). Both genotypes consisted of 4 subgroups, each containing 50 broiler chicks. Fast-growing broilers reached market weight (2 kg) on day 38, while slow-growing broilers reached the same weight on day 72. Fast-growing broilers consumed less feed to attain 2 kg live weight compared with slow-growing broilers. The feed conversion ratio of the fast-growing broilers was 1.63, while that of the slow-growing broilers was 2.67. Significant differences were observed between the genotypes with regard to the percentage weights of the gizzard, liver, leg and breast. The percentage weights of the leg and abdominal fat were higher in slow-growing broilers, while the percentage weight of the breast was higher in fast-growing broilers. No difference was observed between the genotypes with regard to cooking loss in leg and breast meats, whereas differences were recorded with regard to the water holding capacity (%) in leg meat. The slow-growing genotype had lower pH values in breast and leg meats. The values of leg meat brightness (L*), redness (a*) and yellowness (b*) were higher in the slow-growing broilers, but the differences were not statistically significant. The L* and a* values of breast meat were found to be higher in slow-growing broilers. These results showed that in the slow-growing genotype, breast and leg meat color L, a and b value are enhanced. However, the fast-growing genotype has better performance and carcass characteristics compared to the slow-growing genotype.
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    Scientific Peer Review of University Teaching Members Working in Animal Feed and Animal Nutrition
    (Kahramanmaras Sutcu Imam Univ Rektorlugu, 2019) Ayasan, Tugay; Ergul, Serife; Yilmaz, Hilal; Nakipoglu, Aslihan
    In this study, it was aimed to determine the scientific peer review of the faculty members working in the Animal Science Department of the Faculty of Agriculture, Veterinary Faculty and Animal Nutrition Department of the universities in Turkey. For this reason, the data obtained from questionnaires conducted with 100 faculty members via e mail constituted the basis of the study. In the study, it was seen that the referee form was a healthy approach, the necessity of taking the referee training, and the volunteer should be the basis of the referee. In the survey, 51% of the referees read an average of 1-5 articles per year, and 47% of the referees read the articles they received in 15 days. It was determined that 75% of the faculty members who participated in the survey did not believe that the refereeing was not done properly, and 83% of the faculty members were seeking the names of the authors while refereeing.