The Influence of Supplemental Zinc and Ractopamine Hydrochloride on Mineral and Nitrogen Retention of Beef Steers
The objective of this study was to ascertain how ractopamine hydrochloride supplementation and Zn supplementation affects N retention and Zn absorption in beef steers. No interaction was detected between ractopamine hydrochloride supplementation and Zn supplementation (MIN x BA strategies). There was no effect of ractopamine hydrochloride inclusion on Zn absorption. However, there was an increase of Zn retention with increasing concentrations of supplemental Zn. Additionally, N retention was increased by supranutritional Zn supplementation and also by ractopamine supplementation. Increased N retention may help explain previously noted improvements in cattle performance when fed ractopamine hydrochloride and supranutritional concentrations of Zn.
How to Cite:
Carmichael, R. & Genther-Schroeder, O. N. & Hansen, S. L., (2018) “The Influence of Supplemental Zinc and Ractopamine Hydrochloride on Mineral and Nitrogen Retention of Beef Steers”, Iowa State University Animal Industry Report 15(1). doi: https://doi.org/10.31274/ans_air-180814-577