THE EFFECT OF INCREASED ROXAZYME-G SUPPLE MENT IN THE BROILER FED WITH TRITICALE RICH MIXTURES

First experiment was performed on 1100 male Vedette-hybrid chicks. One -day-old chickens were randomly divided into 5 feeding groups, each 4 x 55 heads. Chickens were kept on litter. During period of 0-21 days c hickens were fed semi ad libitum with starter mixture, in period of 22 -42 dacs of their life were fed with grower and from 43rd to 49th day with finisher mixtures. Average energy concentration amounted 10.8-11. 1 MJ per kg of mixture, contents of crude protein was 23% (starter) an d 20.7% in both, grower and finisher. Birds from control group sere fe d with mixture contained mixed grains - maize, a:heat and barley, whil e the chickens from groups II-V were fed with mixtures where 45/55% of Triticale var. Grade as a cereal component was used. Mixture for grou p III was supplemented with enzymatic preparation Roxazyme G(1) (130 p pm). The feeds for groups IV and V were supplemented also, in doses 20 0 and 250 ppm, respectively. Body weight of 21 days-old chickens amoun ted in mean 507 g (494-519 g). lit the age of 49 days, the significant (P < 0.01) differences in body weight between groups were obtained. A pplication of 1 45/55% of Triticale (II) decreased the body weight as compared with birds from group I (2103 g) by 2%; as when Roxazyme prep aration was used, the body weight was higher by 4.3 (III), 2.3 (IV) an d 1.4% (V). Use of Triticale (II) in exchange of other grains (I) decr eased feed utilization by 1.3% only. Supplementation of Triticale-mixt ures with enzymatic preparation increased feed utilization by 2.3% (II I), 1.8% (IV) and by 1.3% (V). The Roxazyme supplement increased the d ressing percentage of broiler by 2 units. In the second experiment the birds were fed semi ad libitum with the same mixtures as in the previ ous experiment (except mixture IV) and the N, P and dry matter balance s were estimated. In the Triticale group II the N-utilization was lowe red by 5.7%; Roxazyme supplementation increased of N-utilization in me an 4.3% (130 ppm) and 11% (250 ppm) and P-utilization adequate by 15.6 % (250 ppm), although the chickens from group V intaked less of nitrog en (by 6.5%) and phosphorus less by 4.2%. The dry matter was utilized in all experimental groups at the same level. The intensities of the i ntestinal fermentation processes were depended on the kind of mixtures in a small degree. Roxazyme preparation increased the concentration o f volatile Fatty acids in small intestine by the increasing of the sha re of acetic acid in the total VFA.