Table 8.
Differences between and within categories in live performance traits (back transformed LS-means ± SEM) at Target Weight 1 (TW1) and Target Weight 2 (TW2). At TW1, CONV was 34 d of age and the other categories were 48 days of age. At TW2, CONV was 48 days of age and the other categories were 62 d of age.
| BW (kg) |
ADG (g) |
ADFI (g) |
cFCR (g feed/g BW) |
||||||
|---|---|---|---|---|---|---|---|---|---|
| Cat. | Strain | TW1 | TW2 | TW1 | TW2 | TW1 | TW2 | TW1 | TW2 |
| CONV | 1.838 ± 0.067b | 3.202 ± 0.067a,b | 55.86 ± 1.25a | 68.92 ± 1.25a | 87.19 ± 2.08a | 102.90 ± 2.50a | 1.49 ± 0.04a | 1.54 ± 0.06a | |
| FAST | 2.367 ± 0.057a | 3.433 ± 0.057a | 51.38 ± 1.00b | 56.03 ± 1.00b | 83.78 ± 2.20b | 97.54 ± 2.20a,b | 1.70 ± 0.05b,c | 1.76 ± 0.05b | |
| MOD | 2.340 ± 0.055a | 3.170 ± 0.056b | 50.27 ± 0.95b | 51.79 ± 0.99c | 80.39 ± 2.18b | 96.36 ± 2.18b | 1.62 ± 0.05b | 1.89 ± 0.05c | |
| SLOW | 1.938 ± 0.055b | 2.813 ± 0.055c | 41.85 ± 0.97c | 46.13 ± 0.95d | 74.34 ± 2.39c | 89.93 ± 2.17c | 1.82 ± 0.06c | 1.97 ± 0.05c | |
| CONV | A1 | 1.675 ± 0.018 | 3.068 ± 0.078 | 50.76 ± 0.55 | 65.28 ± 1.68 | 83.41 ± 2.82 | 101.37 ± 2.49 | 1.52 ± 0.01 | 1.58 ± 0.00 |
| B | 1.789 ± 0.082 | 3.316 ± 0.082 | 55.15 ± 1.74 | 70.48 ± 1.74 | 91.83 ± 2.31 | 107.80 ± 2.99 | 1.50 ± 0.04 | 1.57 ± 0.08 | |
| C | 1.872 ± 0.082 | 3.110 ± 0.082 | 56.58 ± 1.74 | 67.35 ± 1.74 | 82.54 ± 2.38 | 98.02 ± 3.17 | 1.48 ± 0.04 | 1.50 ± 0.09 | |
| FAST | F | 2.483 ± 0.081 | 3.446 ± 0.081 | 53.75 ± 1.73 | 56.08 ± 1.73 | 84.26 ± 2.99 | 99.16 ± 2.99 | 1.60 ± 0.08 | 1.80 ± 0.08 |
| G | 2.290 ± 0.082 | 3.343 ± 0.083 | 48.77 ± 1.74 | 54.76 ± 1.74 | 81.72 ± 3.00 | 97.14 ± 3.00 | 1.74 ± 0.08 | 1.77 ± 0.08 | |
| I | 2.269 ± 0.082 | 3.424 ± 0.082 | 48.27 ± 1.74 | 56.08 ± 1.74 | 84.44 ± 3.03 | 95.05 ± 3.03 | 1.82 ± 0.08 | 1.69 ± 0.08 | |
| M | 2.533 ± 0.100 | 3.489 ± 0.100 | 54.73 ± 2.12 | 57.18 ± 2.13 | 84.68 ± 3.55 | 98.81 ± 3.55 | 1.64 ± 0.10 | 1.78 ± 0.10 | |
| MOD | E | 2.554 ± 0.085 | 3.157 ± 0.085 | 54.72 ± 1.80 | 51.69 ± 1.80 | 88.35 ± 3.07a | 98.77 ± 3.07a,b | 1.66 ± 0.08 | 1.97 ± 0.08 |
| H | 2.248 ± 0.076 | 3.216 ± 0.090 | 49.16 ± 1.62 | 52.56 ± 1.91 | 78.10 ± 3.11a,b | 87.32 ± 3.28b | 1.65 ± 0.08 | 1.71 ± 0.09 | |
| O | 2.331 ± 0.083 | 3.110 ± 0.083 | 49.59 ± 1.76 | 51.01 ± 1.76 | 80.76 ± 3.09a,b | 102.1 ± 3.09a | 1.64 ± 0.08 | 2.02 ± 0.08 | |
| S | 2.239 ± 0.083 | 3.165 ± 0.083 | 47.62 ± 1.76 | 51.91 ± 1.76 | 74.36 ± 3.27b | 97.28 ± 3.09a,b | 1.55 ± 0.09 | 1.86 ± 0.08 | |
| SLOW | D | 2.013 ± 0.083 | 2.873 ± 0.076 | 43.94 ± 1.75 | 46.70 ± 1.62 | 75.68 ± 3.11 | 91.88 ± 3.11 | 1.80 ± 0.08 | 2.01 ± 0.08 |
| J | 2.000 ± 0.082 | 2.943 ± 0.082 | 42.64 ± 1.74 | 48.20 ± 1.74 | 77.73 ± 3.45 | 90.63 ± 3.00 | 1.80 ± 0.10 | 1.91 ± 0.08 | |
| K | 1.933 ± 0.083 | 2.782 ± 0.083 | 41.11 ± 1.76 | 45.63 ± 1.76 | 70.36 ± 4.62 | 88.54 ± 3.09 | 1.83 ± 0.14 | 1.92 ± 0.08 | |
| N | 1.862 ± 0.082 | 2.688 ± 0.082 | 39.70 ± 1.74 | 44.00 ± 1.74 | 73.58 ± 3.45 | 88.68 ± 3.00 | 1.87 ± 0.10 | 2.04 ± 0.08 | |
| T1 | - | 1.271 ± 0.138 | - | 20.84 ± 0.23 | - | - | - | - | |
a,bWithin a column and section, values without a common superscript differ, adjP<0.05.
1
Because of their small sample size, strains A and T were not included in their category means nor were they included in statistical analyses. Values for these strains are raw means ± standard errors. Data were not collected for strain T at Target Weight 1 due to its low body weight. Feed intake data were unavailable.