Selenium source1 | Selenium levels, mg/kg | Means | SEM2 | P-Value | ||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
0.0 | 0.08 | 0.16 | 0.24 | 0.32 | Source | Level | SÂ XÂ L3 | L4 | Q5 | |||
Initial weight, g/bird | ||||||||||||
 SS | 180.4 | 180.4 | 180.5 | 180.3 | 180.4 | 180.4 | 0.038 | 0.478 | 0.999 | - | - | - |
 SY | 180.2 | 180.3 | 180.1 | 180.3 | 180.2 | 180.2 |  |  |  |  |  |  |
Body weight, g/bird | ||||||||||||
 Means | 510 | 490 | 508 | 502 | 494 |  | 6.84 | 0.432 | 0.019 | 0.144 | 0.180 | 0.977 |
 SS | 514 | 487 | 497 b | 500 | 498 | 499 |  |  |  |  | 0.378 | 0.104 |
 SY | 506 AB | 492 AB | 521 Aa | 502 AB | 490 B | 502 |  |  |  |  | 0.308 | 0.088 |
Average daily gain, g/bird/day | ||||||||||||
 Means | 32.9 A | 31.0 B | 32.9 AB | 32.1 AB | 31.4 AB |  | 0.672 | 0.429 | 0.017 | 0.132 | 0.165 | 0.977 |
 SS | 33.3 | 30.7 | 31.6 b | 31.9 | 31.7 | 31.9 |  |  |  |  | 0.366 | 0.097e |
 SY | 32.6 AB | 31.3 B | 34.1 Aa | 32.2 AB | 30.9 B | 32.2 |  |  |  |  | 0.283 | 0.093f |
Average daily feed intake, g/bird/day | ||||||||||||
 Means | 47.3 | 45.5 | 47.2 | 46.4 | 45.9 |  | 0.790 | 0.661 | 0.122 | 0.107 | 0.847 | 0.160 |
 SS | 48.5 a | 45.6 | 46.1 b | 46.4 | 46.0 | 46.6 |  |  |  |  | 0.090 | 0.122 |
 SY | 46.0 b | 45.3 | 48.2 a | 46.4 | 45.8 | 46.3 |  |  |  |  | 0.847 | 0.160 |
Feed conversion rate, g/g | ||||||||||||
 Means | 1.43 | 1.45 | 1.45 | 1.45 | 1.47 |  | 0.015 | 0.238 | 0.185 | 0.335 | 0.018 | 0.809 |
 SS | 1.44 | 1.46 | 1.46 | 1.46 | 1.45 | 1.46 |  |  |  |  | 0.661 | 0.449 |
 SY | 1.42 B | 1.44 AB | 1.44 AB | 1.44 AB | 1.48 A | 1.44 |  |  |  |  | 0.004 | 0.616 |