IM Intramuscular Injections may be given in the thigh muscle or the large muscles along the side of the neck. Subcutaneous injection in the cow. Intramuscular injection in the cow. The tail vein is a convenient site for blood collection and IV injections. The tail vein is not visible.
Ruminant anesthesia poses problems.
When asleep, ruminants are likely to regurgitate some of the rumen contents into the mouth, which then drain down the trachea into the lungs and cause a deadly, aspiration pneumonia. Endotracheal intubation is recommended to prevent this problem. Another problem is bloat. Therefore, gas pressure can increase to the point that the diaphragm can't contract and expand and the animal may have respiratory distress. Intravenous injection in the cow.