Poultry Judging Practice Test

An egg shell with localized stains covering less than 1/32 of the shell has what USDA exterior grade?

1. A

2. B

3. C

4. D

The correct answer is: B

An egg shell with localized stains covering less than 1/32 of the shell is classified as Grade B under USDA standards. Grade B eggs are considered to have some minor shell imperfections, such as slight stains or discolorations, but these stains do not significantly affect the egg's quality or safety. This particular grading indicates that while the egg may not meet the more stringent criteria of Grade A—where the shell must be practically unblemished—it is still acceptable for use, typically in processed egg products. Grade C eggs would typically exhibit more significant defects, such as heavier staining or an overall poor appearance, that would disqualify them for retail sale in their shell form. Grades above B, like A, are reserved for eggs that are completely free from any stains or defects, thus ensuring the highest quality for consumers. Therefore, the presence of minor, localized stains allows for the classification as Grade B rather than a lower grade or a higher quality grade.