Table 3.
Day effects of complete blood count variablesa during the feedlot receiving period
| Day | P-value | |||||||
|---|---|---|---|---|---|---|---|---|
| Itemb | Day 0 | Day 14 | Day 28 | Day 56 | SEMc | Linear | Quadratic | Cubic |
| Red blood cells, M/μL | 9.55bc | 9.33c | 9.66b | 10.02a | 0.18 | <0.01 | <0.01 | 0.26 |
| Hemoglobin, g/dL | 12.20bc | 11.85c | 12.53b | 13.41a | 0.18 | <0.01 | <0.01 | 0.17 |
| Hematocrit, % | 36.92c | 36.87c | 38.71b | 40.75a | — | <0.01 | 0.02 | 0.39 |
| Mean corpuscular volume, fL | 39.62c | 40.52b | 41.08ab | 41.64a | 1.07 | <0.01 | 0.53 | 0.77 |
| Mean corpuscular hemoglobin, pg | 13.24c | 13.19c | 13.46b | 13.85a | 0.31 | <0.01 | <0.01 | 0.54 |
| Mean corpuscular hemoglobin concentration, g/dL | 33.11a | 32.21b | 32.43b | 32.93a | 0.12 | 0.56 | <0.01 | 0.12 |
| Platelets, K/μL | 401.40b | 527.38a | 448.51b | 436.87b | 21.70 | 0.77 | <0.01 | <0.01 |
| White blood cells, K/μL | 11.93a | 9.44c | 10.55b | 12.23a | 0.31 | 0.12 | <0.01 | 0.02 |
| Neutrophils, K/μL | 4.95a | 2.28c | 2.58c | 3.61b | 0.21 | <0.01 | <0.01 | 0.02 |
| Lymphocytes, K/μL | 5.33c | 5.30c | 5.86b | 6.47a | 0.17 | <0.01 | 0.05 | 0.46 |
| Monocytes, K/μL | 1.56b | 1.71b | 1.96a | 1.95a | 0.07 | <0.01 | 0.17 | 0.18 |
| Eosinophils, K/μL | 0.0856b | 0.1518ab | 0.1460ab | 0.2045a | 0.0396 | <0.01 | 0.89 | 0.28 |
| Basophils, K/μL | 0.0028 | 0.0026 | 0.0017 | 0.0018 | 0.0006 | 0.16 | 0.80 | 0.54 |
| Neutrophils, % | 40.66a | 23.14b | 22.53b | 28.40c | — | <0.01 | <0.01 | 0.05 |
| Lymphocytes, % | 45.32b | 56.83a | 56.94a | 53.83a | — | <0.01 | <0.01 | <0.01 |
| Monocytes, % | 13.28c | 18.45a | 19.12a | 16.16b | — | <0.01 | <0.01 | 0.68 |
| Eosinophils, % | 0.73b | 1.56a | 1.40a | 1.60a | — | 0.02 | 0.18 | 0.20 |
| Basophils, % | 0.0278 | 0.0247 | 0.0167 | 0.0167 | — | 0.12 | 0.79 | 0.63 |
| Neutrophil:lymphocyte | 0.96a | 0.44c | 0.46bc | 0.57b | 0.04 | <0.01 | <0.01 | 0.01 |
aComplete blood count analysis was conducted using ProCyte Dx Hematology Analyzer, IDEXX Laboratories, Westbrook, ME.
bItems without common superscript differ (P ≤ 0.05).
cPooled standard error of the least square mean.