Abstract

The use of intensive technologies in beef production will make it possible to most fully reveal the biological potential of meat productivity of dairy and combined breeds of cattle. The purpose of the research was to study the eff ect of the antioxidant “Bisphenol-5” during fattening of steers on the productivity and quality of beef. In order to conduct the experiment, 4 groups (one control and three experimental) were formed from steers of Black-and-White breed undergoing fi nal fattening, which were selected taking into account age, breed, and live weight. The experiment lasted for 122 days. Each group contained 15 steers. The steers of the control and experimental groups were housed in the same premise under the same conditions. In general, during the experiment the average daily gain in live weight of steers of the 1st experimental group was 1200,8 g, which was 7,5 % higher than in the control group. The mintensity of growth was observed in the 2nd experimental group. In this group the average daily gain in live weight reached 1275,4 g during the experiment or, respectively, 14,2 % (p ≤ 0,001), 6,2 % (p ≤ 0,05) and 2,4 % more compared to similar indicators among herdmates in the control, 1st and 3rd experimental groups. In steers of the 3rd experimental group the average daily gain in live weight was 1245,1 g, which was by 11,4 and 3,7 % higher, respectively, compared to the indicators of herdmates in the control and 1st experimental groups. In order to increase the efficiency of rearing and fattening steers of Black-and-White breed, we recommend to use a premix enriched with 0,25 % fat-soluble antioxidant “Bisphenol-5” in an amount of 100 g/head.

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