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    Estimation of Cold Carcass Weight and Body Weight from Several Body Measurements in Sheep through Various Data Mining Algorithms
    (ZOOLOGICAL SOC PAKISTAN, 2017) Karabacak, Ali; Celik, Senol; Tatliyer, Adile; Keskin, Ismail; Erturk, Yakup Erdal; Eydurans, Ecevit; Javed, Yasir
    The goal of the present study was to compare the predictive performance of three data mining algorithms viz., CHAID, Exhaustive CHAID, and CART implemented in the estimation of cold carcass weight (CCW) and body weight (BW) from several body measurements (withers height (WH), chest depth (CD), body length (BL), hearth girth (HG) and leg circumference (LC)) measured from five sheep breeds (Akkaraman (9), Daglic (10), Kivircik (10), Merinos (10) and Karacabey Merino (8)) reared in Konya province conditions located in the Central Anatolia Region of Turkey. For measuring the predictive performance of three algorithms in Models I and II, goodness of fit criteria (coefficient of determination (R-2%), adjusted coefficient of determination (Adj.R-2%), coefficient of variation (CV%), SD ratio, Root Mean Square Error (RMSE), Relative Approximation Error (RAE), and Pearson correlation coefficient between actual and predicted values were calculated. For both Models, CHAID and CART were chosen as the best algorithms in the estimation of CCW trait, whereas only CHAID was the ideal tree-based algorithm in the estimation of BW trait. In conclusion, the determination of the best data mining algorithm on the estimation of BW and CCW traits might be utility for further researches linked with characterization of sheep breeds, and sheep breeding in very large flocks.
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    Fatty Acid Composition and Conjugated Linoleic Acid Content in Various Carcass Parts of Kivircik Lambs
    (ZOOLOGICAL SOC PAKISTAN, 2016) Karabacak, Ali; Guler, Ozmen-Gokalp; Keskin, Ismail; Javed, Yasir; Tariq, Mohammad Masood
    This investigation was conducted to determine the fatty acid composition of lamb meat. For this purpose, Kivircik lambs fattened intensively were slaughtered at the end of two-month fattening period. The fatty acid composition of the samples from leg, shoulder, rib, and breast parts of cold carcasses after slaughtering were analyzed for total saturated fatty acid (SFA), unsaturated fatty acid (MUFA), polyunsaturated fatty acid (PUFA), and conjugated linoleic acid (CLA). In the legs SFA, MUFA, PUFA and CLA were found to be 42.96, 40.80, 5.61, and 1.18%, respectively. In the shoulder these were 43.48, 43.21, 3.59, and 0.85%; in ribs 40.61, 45.36, 4.67, and 1.09% and in breast 37.88, 51.39, 3.89, and 1.20%, respectively. The results showed that the breast part of a carcass was the most advantageous part in terms of fatty acids.