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Table 1 Distribution of calves according to clinical bovine respiratory disease (cBRD) and thoracic ultrasonography score

From: Association between clinical respiratory signs, lung lesions detected by thoracic ultrasonography and growth performance in pre‐weaned dairy calves

TUSSa TUS14b TUS30c
cBRD-d cBRD +e TOTAL cBRD-d cBRD +e TOTAL
TUSS1 22 6 28 15 4 19
TUSS2 3 8 11 9 8 17
TUSS3 2 5 7 3 6 9
TUSS4 3 4 7 3 5 8
Sum of TUSS 1 to 4 30 23 53 30 23 53
  1. aThoracic ultrasonography score (from 1 to 4) (TUSS1 (normal lung or comet tails); TUSS2 (Lung lesion < 2cm2; TUSS3 Lung lesions ≥ 2cm2; TUSS4 Consolidated lung lobe and or/emphysema)
  2. bClassification of calves considering the ultrasound evaluations performed from arrival to day 14
  3. cClassification of calves considering the ultrasound evaluations performed from arrival to day 30
  4. dcBRD- calves that had no BRD treatment from arrival until weaning
  5. ecBRD+ calves that had BRD treatment from arrival until weaning