PRODUCTIVITY OF YOUNG AT VARIOUS TECHNOLOGIES MANAGEMENT

Abstract

To compare the basic economic-useful qualities of calves and neuter Black and Simmental breeds at various technologies of breeding was carried out scientific and economic experience. For the experiment was formed six groups of animals: I and II - bulls Black-and-white and Simmental breeds, III and V castrati black pied, IV and VI - castrati Simmental breeds. In the period from 6 to 12 months castrati were kept in a feedlot. At the age of 12 months, all castrati were converted to pasture. In terms of feeding castrati IV and VI groups in the age period from 12 to 18 months received consentrates. During feeding on pastures among castrati greater intensity of growth had animals treated with fertilizer. Upon reaching the age of 18 months all young guinea fattened on the site for 3 months. The apparent superiority of Simmental and Black-motley steers over castrati found after feeding them to pasture at the age of 18 months. Bulls in group I compared with castrati groups III and V had an advantage of 29 kg (6.9%) and 73.4 kg (19.6%). Young animals contained in feedlots and steers grown on pasture with dressing concentrates have better qualities killer. At the age of 21 months bulls group I and group III castrati carcass weight exceeded peers contained in the conditions of feeding on pasture without fertilization by 58.4 and 32.8 kg (10.3 and 15.3%), and slaughter yield - 3 and 4%. Simmental bulls and castrati group IV for these indicators were better than peer group VI, respectively, 62.3 and 34.7 kg (25.2 and 14.0%), 3.4 and 2.8%. The most effective method of preparation of castrati for slaughter is fattening on pasture with dressing concentrates in conjunction with the final fattening on the site within 3 months. Black-and-White and Simmental breeds bulls should be grown in feedlots to 21 months.