| Copper source1 | Copper level, mg/kg | Pooled SEM | P-value | |||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
0 | 5 | 10 | 20 | 40 | 80 | 160 | 200 | Treatment | Linear | Quadratic | |||
BW d 0, kg | TBCC | 7.30 | 7.43 | 7.40 | 7.43 | 7.43 | 7.23 | 7.27 | 7.33 | 0.30 | 0.999 | 0.678 | 0.892 |
CuPro | 7.30 | 7.41 | 7.44 | 7.37 | 7.47 | 7.33 | 7.45 | – | 0.37 | 0.999 | 0.865 | 0.984 | |
BW d 38, kg | TBCC | 18.66 | 18.83 | 18.91 | 18.95 | 19.48 | 19.82 | 20.88 | 20.87 | 0.83 | 0.362 | 0.003 | 0.013 |
CuPro | 18.66 | 18.87 | 19.01 | 19.24 | 19.97* | 21.18* | 21.13 | – | 0.79 | 0.166 | 0.004 | 0.006 | |
ADG, g | TBCC | 298.9b | 300.1b | 302.8b | 303.2b | 317.2b | 331.2ab | 358.1a | 356.2a | 7.78 | 0.032 | 0.003 | < 0.001 |
CuPro | 298.9b | 301.5b | 304.4b | 312.4b | 328.9b | 364.6a, * | 359.9a | – | 6.80 | 0.002 | < 0.001 | < 0.001 | |
ADFI, g | TBCC | 492.6 | 497.4 | 501.5 | 494.8 | 500.0 | 504.5 | 513.0 | 519.9 | 21.68 | 0.985 | 0.218 | 0.475 |
CuPro | 492.6 | 494.4 | 492.9 | 497.6 | 502.3 | 518.1 | 513.1 | – | 10.65 | 0.491 | 0.144 | 0.069 | |
FCR | TBCC | 1.65ab | 1.66a | 1.66a | 1.63ab | 1.58bc | 1.52cd | 1.43e | 1.46de | 0.02 | <0.001 | 0.001 | 0.111 |
CuPro | 1.65a | 1.64a | 1.62ab, * | 1.59b, * | 1.53c, * | 1.42d, * | 1.43d | – | 0.01 | <0.001 | < 0.001 | < 0.001 |