Large animals have to be cast and secured before an anesthetic is administered.
"Special Report on Diseases of Cattle"
U.S. Department of Agriculture J.R. Mohler
The anesthetic condition is also favorable for the adjustment of displaced organs.
"Special Report on Diseases of Cattle"
U.S. Department of Agriculture J.R. Mohler
He would never permit animals to be used in experiments without an anesthetic, and even then only when he deemed that use absolutely necessary for the furtherance of projects that promised great benefit to humanity.
"Makers of Modern Medicine"
James J. Walsh