Ultrasonic Scanning of Intravital Meat Qualities of Breeding Bulls

Abstract

This article presents the results of ultrasonic scanning of the muscle eye area, fat thickness on the livestock of breeding bulls of the Aberdeen Angus and Kazakh whitehead breeds when assessed by their own productivity. Ultrasonic scanning of intravital meat qualities of breeding bulls allows predicting the quality of carcasses. The research showed that the area of the muscle eye measured by a scanner in the area between 12 and 13 ribs during the life of steers was within 41.5 to 60.7 cm2 in the Kazakh white-headed breed group, on average 47.3 cm2, in the Aberdin Anguss breed group – from 48.4 to 80.5 cm2, on average – 63.9 cm2. The thickness of subcutaneous fat in bulls of 2 groups is practically at the same level and is 3.3 mm in Kazakh white-headed breed and 3.1 mm in Aberdeen-Anguss. When the thickness of subcutaneous fat is up to 4 mm, we can judge that there is not enough protein in the diet, when it is 5 to 14 mm thick – enough protein, when it is 15 mm thick and above – an excess of protein in the diet.