Table 7. Logistic model for abnormal appearance (≥2)1, diarrhea (≥3)2, and pneumonia occurrences before weaning (d 1 to 60) as influenced by feeding pasteurized waste milk (WM) and a blend of WM with milk replacer powder (WM+MR) or transition milk (WM+TM) as liquid feeds to cold-stressed newborn Holstein calves (n = 17 per treatment).
Variable and comparison | Coefficient | SE | OR3 | 95% CI4 | P-value |
---|---|---|---|---|---|
Abnormal appearance | |||||
WM+MR vs. WM | −0.3303 | 0.154 | 0.71 | 0.53, 0.97 | 0.032 |
WM+TM vs. WM | −0.3718 | 0.156 | 0.69 | 0.50, 0.93 | 0.017 |
WM+MR vs. WM+TM | 0.0414 | 0.166 | 1.04 | 0.75, 1.44 | 0.803 |
Diarrhea occurrence | |||||
WM+MR vs. WM | −0.0986 | 0.134 | 0.90 | 0.69, 1.17 | 0.461 |
WM+TM vs. WM | −0.0986 | 0.134 | 0.90 | 0.69, 1.17 | 0.461 |
WM+MR vs. WM+TM | 0.0000 | 0.136 | 1.00 | 0.76, 1.30 | 1.000 |
Pneumonia occurrence | |||||
WM+MR vs. WM | −0.9068 | 0.398 | 0.40 | 0.18, 0.88 | 0.022 |
WM+TM vs. WM | −1.0255 | 0.415 | 0.35 | 0.15, 0.81 | 0.013 |
WM+MR vs. WM+TM | 0.1188 | 0.487 | 1.12 | 0.43, 2.93 | 0.807 |
11 = normal and alert; 2 = ears drooped; 3 = head and ears drooped, dull eyes, and slightly lethargic; 4 = head and ears drooped, dull eyes, and lethargic; and 5 = severely lethargic; based on the scoring system described by [56].
21 = normal; 2 = soft to loose; 3 = loose to watery; 4 = watery, mucous, and slightly bloody; and 5 = watery, mucous, and bloody; based on the scoring system described by [56].
3The odds ratio (OR) indicates the probability of having abnormal or elevated general appearance (≥2), diarrhea (≥3) or pneumonia for the experimental treatments (WM+MR vs. WM; WM+TM vs. WM; and WM+MR vs. WM+TM). If the OR is >1, a given liquid feed in the comparison is more likely to have elevated general appearance, diarrhea, or pneumonia than the other liquid feed by a factor of the difference above 1. If the OR is <1, a given liquid feed has a lower probability of occurrence than the other liquid feed.
4Confidence interval.