ABSTRACT.
In this study it was found that the use of enzyme-based feed additives with an ultradispersed form of
copper, can significantly improve the bioavailability and conversion of trace elements in broiler chickens. Increased
rates of accumulation of certain elements such as copper, lithium, and manganese, and decreased levels of other elements in birds indicate homeostatic changes in elemental status that may affect their overall health and productivity.
Thus, the use of enzyme-based feed additives with an ultradispersed form of copper may be an effective way to optimize the nutrition of broiler chickens, improve their health and productivity, and reduce feed costs.
KEYWORDS: elemental status, productivity, broiler chickens, copper, enzymes, amylase, xylanase, protease.