There are two major sites, the jugular vein and the tail vein. The jugular vein is much larger but cattle are often restrained in a neck chute which can make it difficult to safely inject into. The tail vein runs straight down the underside of the tail but is much narrower, so it is harder to inject into but is generally more accessible in dairy cattle.
Intravenous injection.
for example '' my brother got a intravenous injection in the arm'' best ever yet
An intravenous injection.
Intravenous injection or therapy.
An intravenous injection goes directly to the blood stream and its action is faster than the other types of injection.
You could say "My brother had an intravenous injection in his left arm" or something along the lines of that.
subcutaneous intravenous intramuscular
Subcutaneous injection and Intravenous injection
90774-intravenous
Orally (mouth), nasally (insufflated up nose), intramuscular injection (injected into muscle), intravenous injection (injection into vein).
speedball
giving the injection over 5 minutes