Table 1
The number of positive and negative calves following immunisation (a) in each experiment and (b) for each MAL in the first experiment
| (a) | Experiment | Antibody titre | BMI | Nutritional status | Oxidative stress | Positive | Negative |
|---|---|---|---|---|---|---|---|
| First | ✓ | ✓ | 77 | 30 | |||
| H. somni | Second | ✓ | ✓ | ✓ | 41 | 25 | |
| Third | ✓ | ✓ | ✓ | ✓ | 25 | 22 | |
| First | ✓ | ✓ | 101 | 6 | |||
| P. multocida | Second | ✓ | ✓ | ✓ | 61 | 5 | |
| Third | ✓ | ✓ | ✓ | ✓ | 42 | 5 | |
| First | ✓ | ✓ | 37 | 70 | |||
| M. haemolytica | Second | ✓ | ✓ | ✓ | 8 | 58 | |
| Third | ✓ | ✓ | ✓ | ✓ | 8 | 39 | |
| (b) | MAL | Positive | Negative | P value | |||
| 50 | 38 | 4 | |||||
| 100 | 45 | 1 | |||||
| P. multocida | 200 | 15 | 1 | - | |||
| 400 | 3 | 0 | |||||
| 50 | 3 | 16 | 0.058 | ||||
| 100 | 9 | 28 | 0.105 | ||||
| M. haemolytica** | 200 | 12 | 19 | 0.566 | |||
| 400 | 11 | 7 | 0.009** | ||||
| 800 | 2 | 0 | 0.050* | ||||

Fig. 1
BMI of the positive and negative group calves at the primary and booster immunisation in the first experiment. * – P < 0.05; ** – P < 0.01; # – P = 0.062
Table 2
The nutritional status in the second experiment (a) and oxidative stress marker values in the third experiment (b)
| Positive | Negative | Positive | Negative | Positive | Negative | ||
|---|---|---|---|---|---|---|---|
| Total cholesterol | P | 93.6 ± 5.3 | 98.5 ± 5.1 | 96.1 ± 4.0 | 88.2 ± 13.4 | 79.3 ± 8.3 | 97.7 ± 4.1 |
| (mg/dL) | B | 118.3 ± 5.2 | 118.6 ± 4.6 | 118.7 ± 3.8 | 114.4 ± 12.8 | 113.8 ± 10.0 | 119.0 ± 3.9 |
| Blood urea nitrogen | P | 12.1 ± 0.7 | 10.9 ± 0.4 | 11.7 ± 0.5 | 10.4 ± 0.6 | 13.3 ± 2.3 | 11.4 ± 0.5 |
| (mg/dL) | B | 9.3 ± 0.3 | 10.4 ± 0.4 | 9.6 ± 0.2 | 11.4 ± 0.4 | 9.3 ± 0.6 | 9.8 ± 0.2 |
| Total protein | P | 5.8 ± 0.1* | 5.6 ± 0.1 | 5.7 ± 0.1 | 5.5 ± 0.2 | 6.0 ± 0.2 | 5.7 ± 0.1 |
| (g/dL) | B | 6.0 ± 0.1 | 5.9 ± 0.1 | 6.0 ± 0.0 | 6.1 ± 0.2 | 6.0 ± 0.1 | 6.0 ± 0.0 |
| Albumin/globulin | P | 1.04 ± 0.03 | 1.08 ± 0.04 | 1.05 ± 0.03 | 1.11 ± 0.10 | 0.91 ± 0.08* | 1.08 ± 0.02 |
| ratio | B | 1.15 ± 0.03 | 1.17 ± 0.03 | 1.16 ± 0.02 | 1.14 ± 0.08 | 1.07 ± 0.03 | 1.17 ± 0.02 |
| Albumin | P | 2.90 ± 0.04 | 2.87 ± 0.05 | 2.89 ± 0.03 | 2.87 ± 0.10 | 2.76 ± 0.08 | 2.91 ± 0.04 |
| (g/dL) | B | 3.19 ± 0.03 | 3.16 ± 0.04 | 3.18 ± 0.03 | 3.25 ± 0.09 | 3.11 ± 0.06 | 3.19 ± 0.03 |
| Alpha globulin | P | 1.06 ± 0.02 | 1.07 ± 0.03 | 1.06 ± 0.02 | 1.11 ± 0.07 | 1.15 ± 0.08 | 1.06 ± 0.02 |
| (g/dL) | B | 0.97 ± 0.02 | 0.99 ± 0.02 | 0.97 ± 0.02 | 1.04 ± 0.05 | 0.99 ± 0.03 | 0.97 ± 0.02 |
| Beta globulin | P | 1.00 ± 0.03 | 0.99 ± 0.03 | 1.00 ± 0.02 | 0.91 ± 0.06 | 1.05 ± 0.07 | 0.99 ± 0.02 |
| (g/dL) | B | 1.01 ± 0.02 | 1.01 ± 0.02 | 1.01 ± 0.01 | 1.04 ± 0.05 | 1.01 ± 0.05 | 1.01 ± 0.01 |
| Gamma globulin | P | 0.81 ± 0.05* | 0.65 ± 0.06 | 0.76 ± 0.04 | 0.63 ± 0.12 | 0.98 ± 0.15* | 0.72 ± 0.04 |
| (g/dL) | B | 0.83 ± 0.03* | 0.75 ± 0.04 | 0.80 ± 0.03 | 0.79 ± 0.07 | 0.92 ± 0.09 | 0.78 ± 0.03 |
| Positive | Negative | Positive | Negative | Positive | Negative | ||
|---|---|---|---|---|---|---|---|
| d-ROMs | P | 77.2 ± 2.8 | 83.4 ± 2.7 | 80.3 ± 2.2 | 78.4 ± 3.4 | 77.0 ± 5.7 | 80.8 ± 2.1 |
| (Carr U) | B | 76.0 ± 1.7 | 78.1 ± 2.5 | 76.7 ± 1.6 | 79.4 ± 5.1 | 74.8 ± 2.9 | 77.5 ± 1.7 |
| BAP | P | 2,934 ± 50 | 2,985 ± 52 | 2,959 ± 38 | 2,951 ±114 | 2,862 ± 83 | 2,978 ± 40 |
| (μM) | B | 2,843 ± 39 | 2,802 ± 52 | 2,825 ± 33 | 2,816 ± 122 | 2,933 ± 85 | 2,802 ± 33 |
| P | 2.64 ± 0.10 | 2.81 ± 0.10 | 2.73 ± 0.08 | 2.66 ± 0.04 | 2.69 ± 0.19 | 2.73 ± 0.08 | |
| OSI | B | 2.69 ± 0.08 | 2.82 ± 0.11 | 2.74 ± 0.07 | 2.85 ± 0.24 | 2.57 ± 0.15 | 2.79 ± 0.07 |
[ii] H. somni – Histophilus somni; P. multocida – Pasteurella multocida; M. haemolytica – Mannheimia haemolytica; P – at the time of primary immunisation; B– at the time of booster immunisation; d-ROMs – diacron reactive oxygen metabolites; Carr U – Carratelli units; BAP – biological antioxidant potential; OSI – oxidative stress index
Table 3
Pearson’s correlation analysis
| H. | P. | M. | At | At | H. | P. | M. | ||
|---|---|---|---|---|---|---|---|---|---|
| somni | multocida | haemolytica | primary | booster | somni | multocida | haemolytica | ||
| Maternal antibody titre | H. somni | - | |||||||
| P. multocida | 0.530** | - | |||||||
| M. haemolytica | 0.438** | 0.492** | - | ||||||
| At primary | 0.182 | 0.048 | 0.198* | - | |||||
| Body mass index | At booster | 0.362** | 0.298** | 0.208* | 0.446** | - | |||
| H. somni | 0.132 | 0.152 | 0.142 | 0.316** | 0.383** | - | |||
| Post-immunisation | P. multocida | −0.033 | 0.132 | 0.085 | 0.370** | 0.347** | 0.452** | - | |
| titre | M. haemolytica | 0.061 | 0.227* | 0.264** | 0.389** | 0.278** | 0.357** | 0.510** | - |
| H. somni | P. multocida | M. haemolytica | |
|---|---|---|---|
| Total cholesterol | −0.171 | −0.093 | −0.145 |
| Blood urea nitrogen | 0.142 | 0.101 | −0.043 |
| Total protein | 0.593** | 0.539** | 0.306* |
| Albumin/globulin ratio | −0.610** | −0.485** | −0.418** |
| Albumin | −0.068 | −0.009 | −0.119 |
| Alpha globulin | 0.003 | 0.092 | 0.000 |
| Beta globulin | 0.485** | 0.303* | 0.158 |
| Gamma globulin | 0.766** | 0.683** | 0.512** |

Fig. 2
Relationship between body mass index at primary immunisation and maternal antibody titre against Histophilus somni at primary immunisation; post-immunisation titre and maternal antibody titre at primary immunisation against H. somni; post-immunisation titre against H. somni and body mass index at primary immunisation; and post-immunisation titre against H. somni and body mass index at booster vaccination in the first experiment (1) and between maternal antibody titre and serum total protein or gamma globulin at the primary immunisation in the second experiment (2). ** – P < 0.01; # – P < 0.10