Chester White

This file reproduces official breed guidelines verbatim for research. No original standard is authored here.

The Chester White originated in Chester County, Pennsylvania. Certified Pedigreed Swine (CPS) is the official US registry (Chester White Swine Record Association).

Sources

1. Certified Pedigreed Swine / Chester White Swine Record Association. Breed Guidelines — Breed Classifications. Effective September 20, 2021. https://cpsswine.com/breeds/chester-white/ (retrieved 19 August 2026). CPS home: https://cpsswine.com/.

Certified Pedigreed Swine — Breed Guidelines

Breed Classifications – Effective September 20, 2021

Must possess Chester White Breed characteristics.

Must be ear notched within 7 days of birth.

Must be solid white in color, no color on the skin larger than a silver dollar, no colored hair.

Any skin pigmentation other than white that exceeds five in number are disqualified.

Ears must be down and medium size.

Any signs of weighed ear tags or evidence of past existence of such ear tags are determined to be not permissible and are grounds for disqualification.

All boars and gilts must have six (6) functional teats on each side for exhibition.

The Chester White Swine Association requires that all sires used for recorded litters be DNA stress-tested negative before they can be part of the Chester White recording base. Additionally, all sires that are the result of a negative-negative mating must be DNA stress-tested negative prior to being part of the Chester White sire database.

All Chester White pigs consigned to national shows/sales or state association events are guaranteed to be stress negative by the exhibitor.

Questions, call the Certified Pedigreed Swine office at (309) 691-0151.