Clinical Context Peer-reviewed veterinary literature continues to shape everyday decision-making for production animal practice, especially when new evidence clarifies diagnosis, treatment selection, monitoring, or clinical outcomes.

What the Study Evaluated A study published in The veterinary quarterly in 2026 evaluated effects on health and antioxidant status of oral supplementation of hazelnut skin extract in dairy calves with neonatal diarrhea: a randomized clinical trial in hospitalized patients..

Key Findings Neonatal calf diarrhea (NCD) is a major contributor to morbidity and mortality in calves. Growing concern about antimicrobial resistance has spurred interest in phytotherapeutic alternatives, particularly polyphenol-rich extracts. Hazelnut skin (HS), a by-product of the confectionery sector, is a sustainable and underutilized source of polyphenols; however, its therapeutic…