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Öğe Effects of feed refreshing frequency on growth and carcass characteristics of Awassi lambs(South African Journal Of Animal Sciences, 2007) Keskin, M.; Gul, S.; Sahin, A.; Kaya, S.; Duru, M.; Gorgulu, O.; Sahinler, S.Sixty, two-month old male Awassi lambs were used in this study to investigate the effects of feed refreshing (FR) frequencies on their growth and carcass characteristics over a period of 65 days, Treatments were: Feed refreshing at 2 h (FR2), 4 h (FR4), 8 h (FR8), 12 h (FR12) and 24 h (FR24) intervals. The lambs were fed individually, At the onset of each refreshing period the lambs were offered fresh feed ad libitum. Daily feed intakes, weekly live weights and carcass characteristics were recorded. Daily feed intakes per lamb per treatment were; 1.13 kg, 1.05 kg, 1.00 kg, 0.98 kg and 0.95 kg; daily gains were 193.6 g, 180.6 g, 148,6 g, 169.3 g and 146.4 g; feed conversion ratios (kg feed/kg gain) were 6.1, 6.7, 7.2, 7.2 and 7.5; hot carcass weights were 13.0 kg, 13.1 kg, 12.1 kg, 13.3 kg and 13.1 kg; dressing percentages were 42.3%, 42.4%, 39.9%, 40.2% and 41.2%; the proportion of muscle in the carcass was 52.0%, 55.2%, 55.6%, 55.8% and 54.8%; bone ratio was 20.4%, 20.3%, 21.9%, 21.1% and 20.9%; subcutaneous fat ratio was 16.9%, 14.2%, 12.9%, 12.7% and 14.0% and intramuscular fat ratio was 8.8%, 7.1%, 6.8%, 8.7% and 7.7% in FR2, FR4, FR8, FR12 and FR24 treatments, respectively. Results showed that frequent feed refreshing stimulated feed intake and daily gain without affecting carcass characteristics.Öğe ENVIRONMENTAL AWARENESS AND ATTITUDES IN UNIVERSITY STUDENTS. AN EXAMPLE FROM HATAY (TURKEY)(Scibulcom Ltd, 2016) Bozdogan, E.; Sahinler, S.; Korkmaz, E.In this study, we aimed to determine the awareness and attitudes of the Hatay Mustafa Kemal University students towards environmental problems on a local or national scale and the effect of educational status and gender. To this end, a standard questionnaire was prepared as a 5-point Likert scale and distributed to 1310 individuals selected through the stratified sampling method in the 2011-2012 academic year. The obtained data were analysed statistically. From this analysis, it was determined that the environment was not the most important problem for university students on a local or national scale. As a result, the level of awareness was found to be higher than the level of attitude in the university students. However, gender was not found as an effective parameter on environmental attitude.Öğe Environmental awareness and attitudes in university students. An example from Hatay (Turkey)(Scibulcom Ltd., 2016) Bozdogan, E.; Sahinler, S.; Korkmaz, E.In this study, we aimed to determine the awareness and attitudes of the Hatay Mustafa Kemal University students towards environmental problems on a local or national scale and the effect of educational status and gender. To this end, a standard questionnaire was prepared as a 5-point Likert scale and distributed to 1310 individuals selected through the stratified sampling method in the 2011–2012 academic year. The obtained data were analysed statistically. From this analysis, it was determined that the environment was not the most important problem for university students on a local or national scale. As a result, the level of awareness was found to be higher than the level of attitude in the university students. However, gender was not found as an effective parameter on environmental attitude. © 2016, Scibulcom Ltd. All rights reserved.Öğe Estimation of sustained peak yield interval of dairy cattle lactation curves using a broken-line regression approach(South African Journal Of Animal Sciences, 2009) Sahinler, S.A broken-line regression model with three straight lines and two breakpoints was used to estimate the sustained peak yield of the lactation curve. A sample of 1548 lactation records of 425 Holstein-Friesian cows was provided by the Research and Application Farm of the Agriculture Faculty of Cukurova University in Adana, Turkey. A total of 13463 test-day milk yields (kg/day), recorded once a month with electronic identification and automatic milking recording systems, between November 1994 and January 2006, were used. The data was classified as first, second, third, fourth, fifth, sixth and seventh parity, and included 4105, 3238, 2495, 1800, 1113, 641 and 71 test-day records, respectively. Times (days) at the beginning and end of sustained peak yield per parity were 73.9 - 160.2, 70.6 - 131.9, 70.8 - 130.7, 71.0 - 130.3, 71.3 - 130.4, 71.2 - 128.2 and 71.1 - 129.8, respectively. The peak yields of lactation curves were 19.1 kg/d, 21.8 kg/d, 23.8 kg/d, 24.2 kg/d, 24.2 kg/d 24.4 kg/d and 21.3 kg/d, and days in milk (DIM) at peak yields of lactation curves per parity were 126, 103, 102, 104, 106, 103 and 104, respectively. Persistency values (days) and total lactation milk yields (kg/lactation) per parity were 86.4, 61.3, 59.9, 59.3, 59.1, 57.0, 58.7 and 4852.2, 5105.7, 5503.5, 5503.7, 5449.3, 5416.3, 4802.4, respectively. Results showed that the first parity had a lactation curve with the lowest milk yield at peak that reached the peak point at the latest time (DIM) after parturition, but the largest interval between the beginning and end of the sustained peak yield among all parities. This means that the cows in the first lactation were more persistent than those in the later lactations.
