A study published online on 10 October 2026 in The Veterinary Journal evaluates thoracic ultrasound as a diagnostic tool for lower respiratoryatory tract disorders in sheep — a species in which respiratory disease remains a major cause of losses but where advanced imaging has historically seen far less use than in cattle or companion animals.

The paper, titled "Assessment of Thoracic Ultrasound as a Diagnostic Tool for Lower Respiratory Tract Disorders in Sheep," comes from a research group with deep roots in small ruminant medicine. The author list spans institutions and disciplines: Pablo Quílez, Marta Ruiz de Arcaute, Aurora Ortín, Sergio Villanueva-Saz, José María González, Joel Bueso-Ródenas, Pierre Chaulier, Marcelo de las Heras, Cristina Baselga, David Guallar and Delia Lacasta.

Why does this matter at the flock level?

Respiratory disease in sheep is typically assessed through history, auscultation, and response to treatment. Those tools have real limits in a barn setting: lung pathology in small ruminants often progresses before clinical signs become specific, and auscultation frequently underestimates the extent of lesions. Producers and veterinarians often learn the true picture only at necropsy or slaughter.

Thoracic ultrasound has changed that equation in cattle practice. Portable machines now let practitioners visualize consolidated lung lobes at the chute or in the pen, guiding treatment decisions and antimicrobial use in real time. The question this study addresses is whether the same imaging logic holds for sheep — animals with different thoracic anatomy, fleece interference, and husbandry conditions.

The research team draws on combined expertise in small ruminant clinical work, imaging, and pathology. Delia Lacasta's group at the University of Zaragoza has a long track record in ovine respiratory infectious disease, including the pneumonia complexes that drive morbidity in Spanish flocks. That clinical base matters for a diagnostic study: the value of any imaging tool depends on whether findings map onto disease that practitioners actually encounter.

What is the study about?

The paper sets out to assess how thoracic ultrasound performs as a diagnostic instrument for disorders of the lower respiratory tract in sheep. According to the publication record, the work appeared online in The Veterinary Journal on 10 October 2026, with the author team listed above.

Readers should consult the full text for the specific methodology — the sample of animals examined, the reference standards used for comparison, and the imaging protocol applied. Those design details determine how far the conclusions travel: findings from animals with naturally occurring disease in a flock setting carry different weight than experimental models, and the ultrasound findings' correlation with pathology or other diagnostics is the crux of any validation.

How could this change practice?

For food-animal practitioners, a validated ultrasound approach in sheep would offer several practical gains:

• Earlier and more accurate identification of lung pathology than auscultation alone
• Better targeting of treatment, potentially reducing unnecessary antimicrobial administration in flocks
• A non-invasive monitoring tool for tracking lesion resolution or progression
• A screening method usable on-farm with portable equipment already common in cattle work

For the small ruminant sector specifically — where respiratory disease complexes including enzootic pneumonia and other infectious causes reduce productivity and welfare — an accessible imaging diagnostic would strengthen both individual-animal medicine and flock-level health planning.

There are also public-health and stewardship implications. Respiratory disease is one of the main reasons antimicrobials are administered in sheep production. If ultrasound lets veterinarians distinguish animals with consolidating pneumonia from those without significant lung lesions, treatment decisions can rest on visible pathology rather than empirical guesswork — a concrete step toward more judicious antimicrobial use in food-producing animals.

What comes next?

The full paper, available through The Veterinary Journal, reports the study's findings on ultrasound performance in this population. Practitioners working with sheep will want to review the imaging technique described and judge its feasibility under their own field conditions, where restraint, shearing status, and flock size shape what is practical.