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A herd mark tattooed onto both shoulders.
Also known as: Slapmark pig, Shoulder tattoo pig
A slap mark is a herd identification tattooed onto both shoulders of a pig with a pad of needles, readable after slaughter where an ear tag would be lost.
Records the herd of origin, applied to both shoulders so it can be read from either side.
Contexts: History
Survives processing where a tag does not, which is the reason the method exists rather than a preference for tattooing.
Contexts: History
A group of letters and figures tattooed into the skin of each shoulder, applied with a slapping motion.