Rust, R. L., D. U. Thomson, G. H. Loneragan, M. D. Apley, and J. C. Swanson. 2007. “Effect of Different Castration Methods on Growth Performance and Behavior Responses of Postpubertal Beef Bulls”. The Bovine Practitioner 41 (2):111-19. https://doi.org/10.21423/bovine-vol41no2p111-119.