Browsing by Author "Atay O."

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    The effects of immunological castration against GnRH with recombinant OL protein(Ovalbumin-LHRH-7) on carcass and meat quality characteristics, histological appearance of testes and pituitary gland in Kivircik male lambs
    (2010) Gökdal Ö.; Atay O.; Ülker H.; Kayaardi S.; Kanter M.; DeAvila M.D.; Reeves J.J.
    The aims of the study were to investigate the effects of immunization against GnRH using OL protein (Ovalbumin-LHRH-7) on feedlot performance, carcass, meat quality and some reproductive traits in Kivircik ram lambs. Ram lambs in the immunization (I, n= 7) group were immunized against GnRH using OL protein and boosted 2 weeks later. Control (C, n= 7) group was not treated. The animals were kept at pasture for 6 weeks after the first immunization, subjected to a 70 day fattening program, and then slaughtered. Growth performance, various carcass and meat quality characteristics were not affected from the immunization. GnRH immunization induced GnRH antibody production, suppressed testosterone production and testicular growth (P<0.01). Testicular structure was negatively affected from the immunization, but not pituitary. These results suggest that immunization against GnRH with OL could be an alternative castration technique in ram lambs without negatively affecting carcass and meat quality characteristics. © 2010 The American Meat Science Association.
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    Fattening performance, carcass characteristics and meat quality traits in hair goat (Anatolian black) male kids
    (2011) Atay O.; Gokdal O.; Kayaardi S.; Eren V.
    This study was performed to determine the fattening performance, carcass and meat quality characteristics of male Hair goat kids. A total of 13 kids at about 3 month of age were fattened for 60 day. Average live weight of kids were 14.79±0.68kg at the beginning of the fattening, 19.72±0.98 kg at the end of the fattening, 0.082±0.010 kg for daily live weight gain, 7.78 kg for concentrate consumption per 1 kg live weight gain. The slaughtering and carcass characteristics of Hair goat kids were found as 19.84±0.95 kg for slaughtering weight 8.93±0.49kg for warm carcass weight, 8.45±0.47 kg for cold carcass weight, 42.38% for dressing percentage, 0.113±0.021 kg for kidney-pelvic fat weight, 0.136±0.020 kg for internal fat weight, 1.37±0.06 kg for leg weight, 0.677±0.052 kg for back-loin weight, 1.00±0.051 kg for fore-arm weight, 0.278±0.025 kg for shoulder weight, 0.470±0.025 kg for neck weight, 0.384±0.033 kg for flank-chest weight, 8.36±0.80 cm2 for M. Longissimus dorsi area and 2.56±0.18 cm for M. Longissimus dorsi depth. The rational portions of valuable parts and fats in carcasses of the kids were found as 32.93±0.38, 15.95±0.43, 23.94±0.33, 6.55±0.31, 11.31±0.41,9.02±0.40,1.312±0.46and 1.41±0.15%for percentages of leg, rack-loin, fore-arm, shoulder, neck, flank-chest, kidney-pelvic fat and internal fat, respectively. Average moisture, ash, protein and fat values of meat samples were found as 75.70, 1.04,18.91 and 3.23%, respectively. pH values of meat samples were found as 5.71. L*(lightness), a*(redness) and b*(yellowness) values were respectively recorded as 50.24, 15.97 and 11.39. © Medwell Journals, 2011.
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    Fattening performance, carcass and meat quality characteristics of Kivircik male lambs
    (Kluwer Academic Publishers, 2012) Gökdal Ö.; Atay O.; Eren V.; Demircioğlu S.K.
    The objective of this study was to determine the fattening performance and carcass and meat quality characteristics of Kivircik twin male lambs. Twelve lambs at approximately 5 months of age were subjected to a finishing diet for 60 days. Average live weight of lambs at the beginning and the end of the fattening were 23. 14 ± 0. 84 and 39. 0 ± 1. 01 kg, respectively. Daily live weight gain and feed conversion efficiency were found as 0. 265 ± 0. 007 and 6. 14 kg, respectively. Hot carcass weight, cold carcass weight, and dressing percentage were 19. 6 ± 0. 6 and 18. 9 ± 0. 6 kg and 48. 1 ± 0. 3%, respectively. Kidney-pelvic fat weight, internal fat weight, and m. longissimus dorsi area were 0. 117 ± 0. 023 and 0. 364 ± 0. 041 kg and 15. 26 ± 0. 70 cm 2 , respectively. The percentages of leg, back loin, forearm, shoulder, neck, flank-chest, kidney-pelvic fat, and internal fat in carcasses of the lambs were found as 34. 1 ± 0. 4%, 19. 6 ± 0. 3%, 21. 0 ± 0. 2%, 7. 0 ± 0. 3%, 10. 5 ± 0. 3%, 7. 2 ± 0. 2%, 1. 3 ± 0. 1%, and 1. 8 ± 0. 1%, respectively. Averages water content, ash, protein content, and fat content of meat samples were 73. 4%, 1. 0%, 19. 5% and 3. 6%, respectively. pH and thiobarbituric acid reactive substances values of meat samples were 5. 55 and 0. 056 ± 0. 017. L*(lightness), a*(redness), and b*(yellowness) values were recorded as 43. 87, 12. 69, and 10. 22, respectively. Thus, we conclude that fattening performance, carcass, and meat quality of Kivircik lambs are satisfactory levels than that of other native breeds. © 2012 Springer Science+Business Media B.V.