Table 5.
Effects of organic zinc sources on concentrations of plasma immunoglobulin in dairy calves during the first month of life (Experiment 2).
| Item | Treatment 1 | SEM | P- Value | ||||
|---|---|---|---|---|---|---|---|
|
CON (n = 12) |
ZP (n = 12) |
ZM (n = 12) |
Treatment | Days | Treatment × Days | ||
| Immunoglobulin G, mg/ml | 9.47b | 13.02a | 12.40a | 0.62 | <0.01 | 0.01 | 0.13 |
| Immunoglobulin M, mg/ml | 4.25c | 5.17b | 6.49a | 0.26 | <0.01 | <0.01 | 0.50 |
| Immunoglobulin A, μg/ml | 136.37 | 151.27 | 168.90 | 11.06 | 0.14 | <0.01 | 0.86 |
a−c
Mean values in the same row with different superscripts are significantly different (P < 0.05).
1
Treatment: CON, no organic zinc supplementation; ZP group, provided 522.88 mg zinc proteinate (equivalent to 80 mg Zn/day); ZM group, provided 467.88 mg ZM per day (equivalent to 80 mg Zn/day).