TABLE 3.
Summary of the association between the CCKAR SNPs and the performance traits in lines E (n = 547), G (n = 545), and F (n = 539)
| Genotypea | Overall: +179A/G | Overall: +471C/G | Line E: +179A/G | Line E: +471C/G | Line G: +179A/G | Line G: +471C/G | Line F: +471C/G |
|---|---|---|---|---|---|---|---|
| Daily feed intake (kg) | |||||||
| AA | 2.04 (0.02) | 2.10 (0.02) | 2.28 (0.03) | 2.33 (0.02) | 1.81 (0.03) | 1.85 (0.03) | 2.30 (0.03) |
| AB | 2.15 (0.01) | 2.15 (0.01) | 2.36 (0.02) | 2.37 (0.02) | 1.94 (0.02) | 1.93 (0.02) | 2.30 (0.02) |
| BB | 2.15 (0.02) | 2.12 (0.02) | 2.37 (0.02) | 2.34 (0.03) | 1.92 (0.02) | 1.90 (0.03) | 2.33 (0.03) |
| P < 0.001 | P < 0.06 | P < 0.06 | P < 0.48 | P < 0.001 | P < 0.04 | P < 0.71 | |
| Days to 110 kg | |||||||
| AA | 168.0 (1.0) | 165.9 (0.8) | 157.3 (1.3) | 155.6 (0.9) | 178.3 (1.5) | 177.0 (1.4) | 153.7 (0.9) |
| AB | 163.9 (0.6) | 163.9 (0.6) | 154.9 (0.7) | 154.7 (0.8) | 172.9 (1.0) | 173.1 (0.9) | 153.0 (0.7) |
| BB | 163.5 (0.7) | 163.1 (0.8) | 154.9 (0.7) | 155.1 (1.2) | 172.0 (1.2) | 171.3 (1.2) | 153.5 (0.9) |
| P < 0.001 | P < 0.03 | P < 0.25 | P < 0.71 | P < 0.003 | P < 0.008 | P < 0.78 | |
| Lifetime daily gain (g) | |||||||
| AA | 658.0 (5.2) | 667.1 (4.1) | 720.4 (8.1) | 726.5 (5.3) | 599.5 (6.6) | 604.1 (6.2) | 735.7 (6.3) |
| AB | 677.2 (3.1) | 677.1 (3.1) | 731.3 (4.4) | 731.7 (4.8) | 623.7 (4.2) | 622.4 (4.0) | 740.3 (4.4) |
| BB | 677.7 (3.8) | 679.6 (4.5) | 727.6 (5.2) | 730.0 (7.5) | 626.9 (5.2) | 628.4 (5.4) | 736.1 (6.0) |
| P < 0.004 | P < 0.08 | P < 0.52 | P < 0.76 | P < 0.003 | P < 0.01 | P < 0.78 | |
| Test daily gain (g) | |||||||
| AA | 844.8 (8.0) | 855.5 (6.2) | 933.0 (12.5) | 944.5 (8.1) | 757.5 (10.0) | 758.7 (9.5) | 944.2 (9.7) |
| AB | 870.5 (4.7) | 870.4 (3.0) | 949.4 (6.8) | 950.1 (7.2) | 791.6 (6.3) | 791.5 (6.2) | 1001 (6.7) |
| BB | 869.6 (5.8) | 870.7 (6.9) | 945.0 (8.1) | 943.8 (11.4) | 796.0 (8.0) | 795.7 (8.3) | 989.6 (9.2) |
| P < 0.02 | P < 0.13 | P < 0.52 | P < 0.84 | P < 0.006 | P < 0.006 | P < 0.61 | |
| Feed conversion ratio | |||||||
| AA | 2.43 (0.03) | 2.46 (0.02) | 2.45 (0.03) | 2.48 (0.02) | 2.41 (0.04) | 2.46 (0.04) | 2.32 (0.03) |
| AB | 2.48 (0.01) | 2.48 (0.02) | 2.50 (0.02) | 2.51 (0.02) | 2.46 (0.02) | 2.44 (0.02) | 2.31 (0.02) |
| BB | 2.49 (0.02) | 2.46 (0.02) | 2.52 (0.02) | 2.49 (0.03) | 2.45 (0.03) | 2.42 (0.03) | 2.36 (0.02) |
| P < 0.14 | P < 0.70 | P < 0.23 | P < 0.63 | P < 0.56 | P < 0.71 | P < 0.19 | |
| Fat depth (mm) | |||||||
| AA | 10.2 (0.2) | 10.5 (0.2) | 10.7 (0.3) | 11.0 (0.2) | 9.8 (0.3) | 9.8 (0.3) | 11.3 (0.3) |
| AB | 10.5 (0.1) | 10.5 (0.1) | 10.9 (0.2) | 11.0 (0.2) | 10.0 (0.2) | 10.0 (0.2) | 11.6 (0.2) |
| BB | 10.5 (0.2) | 10.4 (0.2) | 10.8 (0.2) | 10.4 (0.3) | 10.3 (0.2) | 10.3 (0.2) | 10.8 (0.2) |
| P < 0.58 | P < 0.94 | P < 0.78 | P < 0.20 | P < 0.38 | P < 0.41 | P < 0.04 | |
| Muscle depth (mm) | |||||||
| AA | 62.7 (0.5) | 63.1 (0.4) | 59.8 (0.8) | 60.2 (0.5) | 65.9 (0.7) | 65.7 (0.7) | 65.6 (0.7) |
| AB | 63.9 (0.3) | 63.8 (0.3) | 60.4 (0.4) | 60.3 (0.5) | 67.3 (0.5) | 67.4 (0.5) | 65.7 (0.5) |
| BB | 63.1 (0.4) | 62.7 (0.5) | 59.4 (0.5) | 58.5 (0.7) | 66.7 (0.6) | 66.6 (0.6) | 65.2 (0.7) |
| P < 0.09 | P < 0.09 | P < 0.33 | P < 0.10 | P < 0.24 | P < 0.10 | P < 0.86 | |
“Overall” refers to effects across lines E and G.
a
Allele A refers to +179A and +471C, and allele B refers to +179G and +471G.