| WL | White Leghorn |
| BYC | Beijing-You Chicken |
| WPR | White Plymouth Rock |
| CN | Cornish |
| PM | Pectoral muscle |
| TM | Thigh muscle |
| PMM | Pectoral muscle of males |
| PMF | Pectoral muscle of females |
| TMM | Thigh muscle of males |
| TMF | Thigh muscle of females |
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