Hepatogenous Photosensitization in a Neonatal Calf Raised on Brachiaria Decumbens Pasture

The study describes a case of hepatogenic photosensitization in a 22-day-old Tabapuã calf, caused by its mother's consumption of Brachiaria decumbens pasture. The calf showed symptoms including skin erythema, alopecia, corneal ulcers, and diarrhea. Treatment involved removing the calf and mother from the pasture and sunlight, and administering vitamins, amino acids, anti-inflammatory drugs, and antibiotics, along with ophthalmic treatments for corneal ulcers. After 54 days, the calf fully recovered with significant hair regrowth. The study emphasizes the need for early diagnosis, intervention, and preventive measures such as dietary changes to manage and prevent this condition in cattle.