What does USGI mean in meat?

USGI is not a term used in relation to meat. It stands for "United States Government Issue". This term is commonly used to refer to military equipment, clothing, and supplies.

It's possible you are thinking of a different acronym related to meat, such as:

* USDA: United States Department of Agriculture, which sets standards for meat safety and labeling.

* GMP: Good Manufacturing Practices, which are guidelines for food production.

* HACCP: Hazard Analysis and Critical Control Points, a system for food safety management.

Could you provide more context or clarify the specific term you are looking for?