1. Effect of hydrophobicity on utilization of peptides by ruminal bacteria in vitro;Chen;Appl. Environ. Microbiol.,1987
2. A field trial comparing copper sulfate, copper proteinate, and copper oxide as copper sources for beef cattle;Clark;J. Dairy Sci.,1993
3. Stress induction affects copper and zinc balance in calves fed organic and inorganic copper and zinc sources;DeBonis;J. Anim, Sci.,1992
4. Effects of copper chelates on growth and copper status of rats;Du;J. Dairy Sci.,1993
5. Comparison of bioavailabilities of copper in copper proteinate, copper lysine and cupric sulfate and their interaction with iron;Du;J. Anim. Sci.,1994