R. Otuzbirov, R. Kalev, Zh. Gergovska
Two group production experiments were carried out with a total number of 24 Black and White male calves. The animals were divided in three groups with 8 calves in each depending on the housing and feeding conditions: free indoor housing in box (group І), housing in tie stalls (group ІІІ) and a combination of a grazing period with an free indoor housing in box period (group II). The following economic traits were recorded: sales price of calves, costs of used feeds, labor costs, other costs, income from sold fattened calves. On this basis, the cost price and profit for 1 kg weight gain and 1 kg live weight were calculated. Fattening calves indoor in tie stalls resulted in the highest average daily weight gain and attainment of slaughter weight within the shortest period. This fattening system has however generated the highest costs – mainly for feed and was consequently related to the highest cost price per kg weight gain. The lowest weight gain was observed in combined pasture-rearing and indoor finishing, which reflected in prolonged total duration of fattening. At the same time, this system was characterized with low feed costs, hence the lowest cost price per 1 kg weight gain and live weight and respectively, with the highest profit.