Table 2.
Frequency analysis and the probability of occurrence of woody breast (WB) degrees of severity with respect to the growth production variables included in the prediction model.
| Variable | WB frequency1 |
Total | |||
|---|---|---|---|---|---|
| 0 | 1 | 2 | 3 | ||
| Sex (%) | |||||
| Female | 258 (55) | 158 (33) | 44 (9) | 10 (2) | 470 |
| Male | 715 (19) | 1,558 (41) | 1,151 (30) | 430 (11) | 3,854 |
| Age (%) | |||||
| 4 wk | 338 (60) | 197 (35) | 22 (4) | 3 (1) | 560 |
| 6 wk | 619 (17) | 1,464 (41) | 1,090 (31) | 372 (11) | 3,545 |
| 8 wk | 16 (7) | 55 (25) | 83 (38) | 65 (30) | 219 |
| Strain (%) | |||||
| Standard breast yield A | 734 (38) | 771 (40) | 327 (17) | 103 (5) | 1,937 |
| High breast yield B | 43 (23) | 77 (41) | 59 (31) | 11 (6) | 190 |
| High breast yield C | 196 (9) | 868 (40) | 809 (37) | 324 (15) | 2,197 |
| Live weight (%) | |||||
| <2,000 g | 265 (68) | 119 (30) | 7 (2) | 1 (0) | 392 |
| >2,000– <2,500 g | 124 (46) | 117 (43) | 26 (10) | 3 (1) | 270 |
| >2,500–<3,000 g | 149 (28) | 191 (35) | 146 (27) | 53 (10) | 539 |
| >3,000–<3,500 g | 282 (18) | 681 (43) | 449 (29) | 154 (10) | 1,566 |
| >3,500–<4,000 g | 148 (11) | 559 (41) | 488 (36) | 168 (12) | 1,363 |
| >4,000 g | 5 (3) | 49 (25) | 79 (41) | 61 (31) | 194 |
| Breast weight (%) | |||||
| <500 g | 302 (71) | 118 (28) | 8 (2) | 0 | 428 |
| >500– < 750 g | 555 (30) | 861 (46) | 371 (20) | 91 (5) | 1,878 |
| >750– < 1,000 g | 115 (6) | 727 (39) | 755 (40) | 277 (15) | 1,874 |
| >1,000 g | 0 | 9 (6) | 60 (43) | 72 (51) | 141 |
1
n (% is based on the total number within each row).