INVESTIGATION OF MILK YIELD FROM CULTURE, CROSS-BRED AND NATIVE CATTLE BREEDS IN TURKEY BY MULTIVARIATE ANALYSIS OF VARIANCE (MANOVA)

Abstract

In this study, milk yield from culture, cross-bred, and native cattle breeds in 7 geographical regions of Turkey were investigated by multivariate analysis of variance (MANOVA) in 2015. The values of Pillai's Trace, Wilks' Lambda, Hotelling's Trace and Roy's Largest Root statistics used for the MANOVA test were 0.522, 0.546, 0.711 and 0.490, respectively. The corresponding F values for these statistics were found to be 2.422, 2.518, 2.594 and 5.634, respectively. Mean annual milk yield of crossbred, culture, and native cattle breeds reached to be 3776.355, 2692.803 and 1311.513 kg, respectively. Therefore, the results of these statistics are very close to each other. As a result of the MANOVA test, the difference within milk yield between the regions was not significant for culture and native cattle breeds, whereas a significant difference was found in hybrid breed cattle (P < 0.001). As a result of the Bonferroni test, it was found that the milk yield difference in hybrid cattle was due to the difference in yield between Eastern Anatolia-Aegean, Eastern Anatolia-Marmara, Southeast Anatolia-Aegean and Southeast Anatolia-Marmara regions.