DYNAMICS OF LINEAR GROWTH AND PERFORMANCE OF TWO-YEAR-OLD YOUNG TROPPING HORSES

Abstract

The linear growth and performance of young horses of the Oryol and Russian trotting breeds of two years of age of the PE "Sukach V.P." were studied. The conducted analysis of the dynamics of linear growth shows that two-year-old stallions and fillies of the Oryol trotting breed outnumber the young of the Russian trotting breed. Although, it should be noted that fillies of the Orlov trotting breed did not significantly differ from female Russian trotting breeds in terms of breast girth and wrist girth. In addition, it was established that fillies of the Russian trotting breed were slightly inferior to the requirements of the control scale for the development of young trotting breeds in terms of measurements: height at the withers - by 0.7 cm, chest girth - by 4.9 cm, and instep girth by 0.2 cm. For horses of trotting breeds, liveliness is considered the main selection feature, and the main selection criterion is liveliness at 1600 m. In order to qualify, two-year-old young Orel trotters, regardless of gender, must complete a distance of 1,600 m in 2.55.0 and faster, and for Russian - 2.50.0 and faster. The stallions of the Oryol breed were 2.3 seconds faster, and the Russian stallions yielded to the requirements of the standard by 1.2 seconds, which confirms the better precociousness of the Oryol population in comparison with peers of the Russian trotting breed. The mares of both experimental breeds were inferior to the standard of the Oryol trotting breed by 9.1 seconds, and the Russian one by 2.5 seconds, which is undesirable especially for the mother stock of the Oryol population. So, it was established that regardless of age, the young of the Orlov trotting breed are more precocious than the young of the Russian trotting breed, but according to the liveliness index, on the contrary, stallions and mares of the Russian trotting breed prevailed over the Orlov.