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Mastitis in a neonatal filly
Rebecca Gilday1, Danyse Lewis1, Katharina L Lohmann1
1Western College of Veterinary Medicine (Gilday), Department of Small Animal Clinical Sciences (Lewis), Department of Large Animal Clinical Sciences (Lohmann), Western College of Veterinary Medicine, University of Saskatchewan, 52 Campus Drive, Saskatoon, Saskatchewan S7N 5B4.
Summary
Neonatal mastitis is rare in horses. A case study details mastitis in a 1-week-old Paint filly caused by Streptococcus dysgalactiae.
Area of Science:
- Veterinary Medicine
- Equine Health
- Neonatal Care
Background:
- Neonatal mastitis is an uncommon condition in foals.
- Prompt diagnosis and treatment are crucial for foal survival and mammary health.
Observation:
- A 1-week-old Paint filly presented with clinical signs of mastitis.
- Physical examination revealed mammary gland inflammation and discomfort.
Findings:
- Bacterial culture identified an organism belonging to the Streptococcus dysgalactiae group as the causative agent.
- This specific bacterial group is an infrequent cause of mastitis in neonatal foals.
Implications:
- This case highlights the importance of considering Streptococcus dysgalactiae in equine neonatal mastitis.
- Understanding causative agents aids in targeted antimicrobial therapy and improved treatment outcomes.
- Further research into the prevalence and risk factors for Streptococcus dysgalactiae-associated neonatal mastitis in horses is warranted.

