RESULTS OF BEEF PRODUCTIVITY ASSESSMENT OF THE KAZAKH WHITEHEADED ANIMALS

Abstract

Currently, the active work on development of an intrabreed type of the Kazakh Whiteheaded breed, which is characterized by increased productive and adaptive qualities, is in progress. It is being conducted in the Stavropol Territory, on the basis of the APC
collective farm “Gigant” in the Blagodarnensky Municipal District. The purpose of the research, which was presented in the article, was to assess the degree of manifestation of beef
productivity traits in Kazakh Whiteheaded cattle of the developed intrabreed type. The object
of the research was 50 bull calves, 50 heifers, 50 first-calf cows and 20 servicing bulls of the
Kazakh Whiteheaded breed. The studies were carried out using common methods. The exterior of all assessed animals was typical for the Kazakh Whiteheaded breed. It was found that
the coefficient of variation in terms of live weight in both bull calves and heifers was at the
level of 1,949–6,625%. As for the bulls of the Kazakh Whiteheaded breed, the greatest homogeneity was established for the following characteristics: height – 1,554%, body length –
2,572% and live weight at 12 months – 3,016%. The servicing bulls differed in the greatest
variability: in chest depth – 16,080%, hip width – 18,390% and chest width – 20,000%. As
for the remaining studied characteristics, the coefficient of variation ranged from 4,121 to
8,726%. The greatest homogeneity in first-calf cows of the Kazakh Whiteheaded breed was
established according to the following characteristics: height – 0,856%, chest depth – 0,998%,
chest girth – 2,221%, rump length – 0,980%, hip width – 1,491%, body length – 2,704% and
cannon bone girth – 2,704%. The greatest variation was observed in the following characteristics: forehead width – 8,260%, hip-joint width – 6,156%, width of pelvis – 7,686%, skin
thickness – 6,857% and milk yielding capacity – 7,512%. As for other characteristics, the coefficient of variation ranged from 3,115 to 4,772%. The obtained data indicated that the livestock was quite homogeneous in most of the selected traits.