Effect of the Lineal and Family Belonging of Broodmares from the Shagya Breed with Respect to the Height at Withers and Cannon Girth

I. SABEVA and A. APOSTOLOV
Agricultural Institute, BG-9700 Shumen, Bulgaria

Abstract

SABEVA, I. and A. APOSTOLOV, 2009. Effect of the lineal and family belonging of broodmares from the Shagya breed with respect to the height at withers and cannon girth. Bulg. J. Agric. Sci., 15: 360-366

The height at withers and the cannon girth of 247 Shagya horses born by broodmares, acted during the last two generation intervals at the Kabiuk Stud, were investigated. The variance analysis, the estimations of different sources of variability and the correlations between the traits at different ages were done by the mixed models methodology.
It was established that the interactions between the lineal and family belonging of the brood mares were a significant source of specific variance with respect to the traits – height at withers and cannon girth. The genetic superiority of horses born from the combinations between Kuhailan Zaid and Oborona, Kuhailan Zaid and Matzkur was the highest, and with respect to the cannon girth – between Kuhailan Zaid and Oborona, Kuhailan Zaid and Sheraky 1-9, Kuhailan Zaid and Celina, and Shagya and Nadezhda.
The phenotypic and genetic correlations between: the height at withers at one and two years of age; the height at withers at two and three years of age; the height at withers at one year of age and the cannon girth at two years of age; and between the cannon girth at two and three years of age had high values. The correlations between the height at withers at one and three years of age and between the height at withers at one year of age and the cannon girth at three years of age were low.

Key words: horse-breeding, genealogical groups, interactions, genetic parameters

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