Association of lung lesions measured by thoracic ultrasonography at first diagnosis of bronchopneumonia with relapse rate and growth performance in feedlot cattle.
average daily gain
bovine respiratory disease
lung consolidation
prognosis
shipping fever
Journal
Journal of veterinary internal medicine
ISSN: 1939-1676
Titre abrégé: J Vet Intern Med
Pays: United States
ID NLM: 8708660
Informations de publication
Date de publication:
May 2019
May 2019
Historique:
received:
16
11
2018
accepted:
06
03
2019
pubmed:
23
3
2019
medline:
10
9
2019
entrez:
23
3
2019
Statut:
ppublish
Résumé
Severity of lung lesions quantified by thoracic ultrasonography (TUS) at time of bronchopneumonia (BP) diagnosis predicted death among steers not treated for this condition. Further research is needed to confirm that lung lesions detected by TUS can be associated with negative outcomes in cattle with BP that subsequently were treated. To quantify the effects on relapse rate and average daily gain (ADG) of lung lesions detected by TUS at first BP diagnosis in feedlot cattle. Prospective cohort of mixed beef-breed steers (n = 93; 243 ± 36 kg) and heifers (n = 51; 227 ± 42 kg) with BP at 4 feedlots. Thoracic ultrasonography was performed by the same clinician and 16-second TUS videos were evaluated offline for maximal depth and area of lung consolidation, maximum number of comet tails, and maximal depth of pleural fluid. Individual ADG was calculated between 1 and 120 days after arrival. Effects of lesions on relapse rate and ADG were investigated using mixed regression models. Maximal depth of lung consolidation was associated with a higher risk of relapse (odds ratio [OR], 1.337/cm; 95% confidence interval [CI], 1.042-1.714) and lower ADG (- 34 g/cm; -64 to -4). Maximal area of lung consolidation also was associated with a higher relapse risk (OR, 1.052/cm Quantifying maximal depth and area of lung consolidation by TUS at first BP diagnosis can provide useful prognostic information in feedlot cattle.
Sections du résumé
BACKGROUND
BACKGROUND
Severity of lung lesions quantified by thoracic ultrasonography (TUS) at time of bronchopneumonia (BP) diagnosis predicted death among steers not treated for this condition. Further research is needed to confirm that lung lesions detected by TUS can be associated with negative outcomes in cattle with BP that subsequently were treated.
OBJECTIVE
OBJECTIVE
To quantify the effects on relapse rate and average daily gain (ADG) of lung lesions detected by TUS at first BP diagnosis in feedlot cattle.
ANIMALS
METHODS
Prospective cohort of mixed beef-breed steers (n = 93; 243 ± 36 kg) and heifers (n = 51; 227 ± 42 kg) with BP at 4 feedlots.
METHODS
METHODS
Thoracic ultrasonography was performed by the same clinician and 16-second TUS videos were evaluated offline for maximal depth and area of lung consolidation, maximum number of comet tails, and maximal depth of pleural fluid. Individual ADG was calculated between 1 and 120 days after arrival. Effects of lesions on relapse rate and ADG were investigated using mixed regression models.
RESULTS
RESULTS
Maximal depth of lung consolidation was associated with a higher risk of relapse (odds ratio [OR], 1.337/cm; 95% confidence interval [CI], 1.042-1.714) and lower ADG (- 34 g/cm; -64 to -4). Maximal area of lung consolidation also was associated with a higher relapse risk (OR, 1.052/cm
CONCLUSIONS AND CLINICAL IMPORTANCE
CONCLUSIONS
Quantifying maximal depth and area of lung consolidation by TUS at first BP diagnosis can provide useful prognostic information in feedlot cattle.
Identifiants
pubmed: 30901138
doi: 10.1111/jvim.15483
pmc: PMC6524390
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
1540-1546Subventions
Organisme : University of Calgary, Faculty of Veterinary Medicine
ID : 10004657
Informations de copyright
© 2019 The Authors. Journal of Veterinary Internal Medicine published by Wiley Periodicals, Inc. on behalf of the American College of Veterinary Internal Medicine.
Références
Can J Vet Res. 2012 Jan;76(1):23-32
pubmed: 22754091
Vet Clin North Am Food Anim Pract. 2016 Mar;32(1):19-35
pubmed: 26922110
J Am Vet Med Assoc. 2014 Dec 1;245(11):1279-85
pubmed: 25406709
Prev Vet Med. 2016 Dec 1;135:67-73
pubmed: 27931931
J Vet Intern Med. 2016 Jul;30(4):1396-401
pubmed: 27305277
J Vet Intern Med. 2019 May;33(3):1540-1546
pubmed: 30901138
J Vet Intern Med. 2018 Sep;32(5):1787-1792
pubmed: 30133838
Vet Clin North Am Food Anim Pract. 2015 Nov;31(3):351-65, v-vi
pubmed: 26210764
J Am Vet Med Assoc. 2018 Jun 1;252(11):1362-1366
pubmed: 29772968
AJR Am J Roentgenol. 2001 Apr;176(4):855-60
pubmed: 11264064
J Vet Intern Med. 2015 Nov-Dec;29(6):1728-34
pubmed: 26332345
J Vet Intern Med. 2014 Jan-Feb;28(1):234-42
pubmed: 24236441