1036 
ANIMAL RESOURCES 
Figure 1. — Method of collecting fresh donor blood from 
large calves. 
30% with a supplemental iron-dextran 
preparation^ injected intramuscularly after 
each collection. We have not found it necessary 
to cross-match blood before use. 
We feel that the high incidence of bacterial 
infection reported in calves undergoing experi- 
mental surgery may be attributed in part to 
contamination of blood obtained from abattoirs. 
The maintenance of donor animals provides a 
ready source of sterile blood and eliminates an- 
other source of infection. 
Handling Equipment 
A very useful weighing crate^ is illustrated 
in Figure 2. This self-contained scale will ac- 
^ Nonemic-lOO, Armour-Baldwin Laboratories, Omaha, Nebraska 
' Way-O-Crate, Caswell Manufacturing Company, Cherokee, Iowa 
51012 
commodate calves weighing up to 300 pounds 
and serves well also as an animal transport fa- 
cility. 
Calves in which anesthesia has been induced 
are clipped and scrubbed as they rest on a 
four-wheeled flat-bed truck and transported 
from the preparation room to surgery with this 
device. 
During the early postoperative recovery pe- 
riod, calves are kept suspended in a specially 
constructed canvas sling. This sling, 51/2 feet 
long by 4 feet wide, is fashioned with appropri- 
ately situated openings for the legs and for uri- 
nary drainage from the male calf. Four rein- 
forced canvas webbings (straps), emanating 
from each longitudinal side of the sling, are 
brought over a metal pipe frame. These web- 
bings are attached to winches, which permit 
Figure 2. — Weighing and transport crate for calves. 
