The role of chelated trace minerals in improving broiler performance andcarcass quality

摘要

The nutritional requirements of the modern broiler reflect the high rates of tissue deposition achieved over the growth period. Mature body composition is the result of sequential deposition of tissue types, a process which is essential to ensure that, for example, bone and connective tissue are present to support increasing body mass. A number of problems occur during the growth cycle and during processing which can be linked to deficiencies in bone structure or connective tissue development. Leg weakness can increase culling rates while skin damage leads to condemnations during processing. These latter effects are estimated to cost the US broiler industry over $100 million a year (Cook, 2000). The purpose of this article is to examine recent evidence concerning the impact of the source of trace minerals on the synthesis and development of connective tissues and on bird health and performance.