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24, chemin de Borde Rouge –Auzeville – CS52627
31326 Castanet Tolosan CEDEX - France

Dernière mise à jour : Mai 2018

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Trace elements as related to growth and health in chickens

INRA Prod. Anim., 14(3), 171-180.


INRA Station de Recherches Avicoles, 37380 Nouzilly


This review summarizes the interest and the role oftrace element factors favouring body weight or bonegrowth and the immune response in poultry. The aim isto analyse consequences of supplementation in diets atlevels corresponding or higher than the growth requirementfor optimising performance of broilers; especiallyas the use of high dietary levels of trace elementsis currently questioned to protect the environment. Cushows a slight growth promoting effect on chick growthwhen added at high concentrations, but Zn, Fe or Mndo not. However, such high dietary level can be deleteriousfor the environment in areas of intensive production.Zn, Se, Cu and Fe are essential elements for theimmune system but there is no clear evidence that highdietary levels stimulate the immune response Infectionand coccidiosis affect trace mineral metabolism and,therefore, may need nutritional adjustment. Ultra-traceelement (Al, Se, Bo, Cd, Cr, F, I, Si, V..) can be of nutritionalimportance for chicks submitted to some nutritionalstress or, when in excess, can be toxic.

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