@inproceedings{01HWWXADDFSX72A4X0YDBA7X2H,
  abstract     = {{Background : 
Specific hemoglobin cut offs for calve are mandated by the legislation of the European Union. There is a lack of evidence concerning the association between these cut off values and parameters of animal welfare. As respiratory tract disease in veal production is one of the main contributors to animal welfare issues, we analysed the association between arrival hemoglobin values and development of pneumonia.

Methods : 
A total of 320 calves were weighed and sampled for hemoglobin (Hb) upon arrival to the veal farm by jugular vein puncture. Quick thoracic ultrasound was performed on the day of arrival and every two days for 8 days thereafter to monitor the development of respiratory tract disease. Calves exhibiting signs of pneumonia were treated according to an on farm protocol. Hb values were divided by incidence and chronicity of pneumonia as well as response to treatment and compared using Student's T test.

Results : 
Median [Min-Max] age was 21 [14-43] days and arrival weight 48 [34-78] kg. Mean +/- SD of Hb was 6.1 +/- 1.2 mmol/L. On arrival 137/320 calves had Hb values <6 mmol/L. 31 calves had pneumonia on arrival to the farm. Hb values were higher for calves with pneumonia on arrival compared to calves without pneumonia 6.5 +/- 1.1 mmol/L vs. 6.0 +/- 1.2 mmol/L, P = 0.36. Over the entire period 101 calves did not develop pneumonia. These showed no difference to in arrival HB 6.1 +/- 0.1 mmol/L compared to calves that did develop pneumonia 6.1 +/- 0.1 mmol/L, P>0.05. Of the 219 calves developing pneumonia, 164 did not cure until day 8. These calves had Hb values of 6.1 +/- 0.1 compared to calves thad did cure 6.2 +/- 0.2 mmol/cL, P>0.05.}},
  articleno    = {{43}},
  author       = {{Golbeck, Lennart and Jourquin, Stan and Boone, Randy and Pardon, Bart}},
  booktitle    = {{Proceedings of the 23rd Middle-European buiatrics congress}},
  keywords     = {{hemoglobin,pneumonia,veal calf,dairy}},
  language     = {{eng}},
  location     = {{Brno}},
  pages        = {{43:131--43:131}},
  title        = {{Blood hemoglobin values in veal calves in relation to development of respiratory tract disease}},
  year         = {{2024}},
}