Effects of different sources and levels of dietary chromium supplementation on performance of broiler chicks.

The current experiment was carried out to evaluate the effect of different dietary chromium supplementation sources, chromium oxide (Cr O ), chromium methionine (Cr-Met), or chromium yeast (Cr-yeast), at different levels each (500 or 1,000 ppb) on growth performance, physiological traits, and carcass characteristics of broiler chicks. A total of 490 seven-day-old Arbor Acres chicks were randomly distributed into 7 experimental groups each in 10 replicates of 7 birds each. The groups were control, 500 ppb Cr O , 1,000 ppb Cr O , 500 ppb Cr-Met, 1,000 ppb Cr-Met, 500 ppb Cr-yeast, and 1,000 ppb Cr-yeast.