Table 6.
Item | CN | CP | ||||||
---|---|---|---|---|---|---|---|---|
SP diet | LP diet | SP diet | LP diet | |||||
Mean | SD | Mean | SD | Mean | SD | Mean | SD | |
Body weight (g) | ||||||||
Day 7 | 194 | 21.3 | 198 | 21.8 | 197 | 16.5 | 196 | 19.0 |
Day 14 | 518 | 43.4 | 512 | 49.5 | 513 | 37.8 | 515 | 43.2 |
Day 21 | 1031a | 95.5 | 996b | 112 | 1006ab | 88.3 | 997b | 109 |
Day 42 | 3256a | 366 | 3088b | 370 | 3164ab | 385 | 3124ab | 469 |
Dissection | 3463a | 386 | 3267b | 388 | 3329ab | 412 | 3292b | 498 |
Carcass weight1 (g) | 2869a | 328 | 2704b | 331 | 2757b | 350 | 2712b | 426 |
Dressing percentage | 82.9a | 0.93 | 82.8a | 0.96 | 82.8a | 1.08 | 82.4b | 1.35 |
WFR (g/g) | 1.86a | 0.04 | 1.74b | 0.07 | 1.82ab | 0.05 | 1.77ab | 0.14 |
FCR (g/g) | 1.63ab | 0.02 | 1.65a | 0.03 | 1.61b | 0.02 | 1.66a | 0.02 |
CPE (kg/kg DM) | 3.27b | 0.04 | 3.60a | 0.07 | 3.32b | 0.04 | 3.59a | 0.03 |
AAGL intake | 8.80a | 0.24 | 8.32b | 0.17 | 8.50ab | 0.36 | 8.46ab | 0.25 |
AACM intake | 13.6a | 0.38 | 11.0b | 0.23 | 13.1a | 0.55 | 11.2b | 0.33 |
CN = without experimental C. jejuni infection; CP = with experimental C. jejuni infection; SP diet = standard protein diet; LP diet = low protein diet; WFR = water-feed ratio in kg water intake/kg diet intake as fed; FCR = feed conversion ratio in kg diet intake as fed/kg body weight gain; CPE = crude protein efficiency in kg body weight gain/kg crude protein intake; AAGL = sum “growth limiting” amino acids like arginine, isoleucine, lysine, methionine, threonine, and valine; AACM = sum of amino acids C. jejuni metabolizable like aspartic acid, glutamic acid, proline, and serine.
1After exsanguation, evisceration and without head and legs, including feathers.
a,bValues within a row with different superscripts differ significantly at P < 0.05.