We bought 4 saddleback weaners in spring and taking them to abattoir in 2 weeks. They had bilateral ear tags when we brought them here and I only noticed yesterday that of the 8 original tags, only one remains. Ears are nicked but fully healed and healthy where they were pulled/rubbed/bitten?? off. Do I need to re-tag them? I have no equipment. Should I buy a slap marker? Or will abattoir accept them on basis of paperwork which is all in order?