EN
The study was performed on growing pheasants (Phasianus colchicus L.) in order to determine the possibility to replace feed components of animal origin, particularly of fish flour, with Livex. There were used 3068 pheasants (chickens) allotted randomly into four groups. The birds were grown in the foil tunnel up to 8 weeks and fed dry mixtures in the following way: group I — dispensings were similar to Ph-1 and Ph 2; group R — poor mixtures containing native components; group III — components of animal origin were replaced1, by 8 per cent and later by 4 per cent of Livex; group IV — the same quantities of Livex (2%) and meat-bone flour were used as components of animal origin. The influence of Livex on the growth of pheasants was assessed on the basis of clinical observation, productive effects and blood examinations. Nearing effects were stated in all the groups of pheasants. Body weights of 4 weeks old birds ranged not significantly from 203 to 209 g and of 8 weeks old from 466 to 482 g. Not significant differences were also noted regarding the index of feed used. There was not any connection between the quality of feed and lossess in the period of growth, blood picture and biochemical indices of the blood. The findings indicate that there is a possibility to substitute Livex for other components ef animal origin especially fish flour.