Abstract
The aim of this study was to determine the influence of the applied additives: aloe preparation (Aloes plus) and a 5-oxo-1,2,4-triazine derivative on production effects, results of slaughter analysis as well as chemical composition of muscles and liver of turkey hens under conditions of stress. The experiment was carried out on 360 turkey hens allocated at random and evenly to six groups, 60 birds each. Groups C and C+stress were control groups that did not receive any additive. Birds from groups A and A+stress were administered Aloes plus preparation in a dose of 0.70 ml/kg body weight (BW)/day. On the other hand, turkey hens from groups T and T+stress were receiving a derivative of 5-oxo-1,2,4-triazine in a dose of 30 µg/kg BW/day that was dissolved in a small quantity of ethanol (ca. 2 ml). The stress factor in the form of simultaneous crowding and changes in temperature and lighting conditions did not affect the production results, slaughter traits of carcasses or the chemical composition of the analyzed tissues of turkey hens. Hence, the effects noted upon the administration of both analyzed additives were not dependent on stress stimuli. Advantages of the Aloes plus preparation application included an insignificant improvement in the feed conversion ratio, a significant increase in the yield of breast muscles and shank muscles as well as in increased contents of dry matter, crude ash, in tissues. On the other hand, positive effects of applying a derivative of 5-oxo-1,2,4-triazine included stimulation of body
weight gains and an increased dry matter content of the muscles.
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