Prediction of Live Weight from Chest Girth From Birth to 12 Months of Age in Yerli Kara Cattle

Authors : Çağrı Melikşah Sakar, Ilker Ünal, Alaeddin Okuroğlu, Muhammed Ikbal Coşkun, Ugur Zulkadir

Pages : 200-204

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Publication Date : 2020-07-01

Article Type : Research

Abstract :This research was carried out to estimate live weights with linear regression models from various body measurements in the period between birth and twelve months age in Yerli Kara (Anatolian Black) cattle. The animal material of this study was composed of 104 head Yerli Kara cattles located in Ankara province. In the study, all correlation coefficients (except for the rump height - chest depth relationship in birth period) were found to be positive and statistically significant (p<0.01). The highest correlation coefficient value was found between live weights and chest girth in all periods. R² values were found as 64%, 77.1%, 75.4% and 77.1% at birth, 3, 6 and 12 months of age respectively. It is concluded that the equations found as a result of regression analysis between the chest girth and live weight can be used to accurately estimate live weights in Yerli Kara cattle. Besides, live weights were estimated using the regression model in the specified periods and the results are presented in tables for practical use.
Keywords : Correlation coefficients, Live weights, Regression, Yerli Kara (Anatolian Black) cattle