Banca de DEFESA: PATRICIA SOARES DEPONTI

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : PATRICIA SOARES DEPONTI
DATE: 24/02/2026
TIME: 14:30
LOCAL: Auditório Prof. Dr. Hans Merkt - Clínica de Bovinos de Garanhuns-UFRPE
TITLE:

CLINICAL, EPIDEMIOLOGICAL AND ANATOMOPATHOLOGICAL STUDY OF CATTLE AFFECTED BY TYPE 5 ABOMASAL ULCER

KEY WORDS:

dairy cattle; omental bursitis; perforated ulcers; fungal abomasitis.

PAGES: 92
BIG AREA: Ciências Agrárias
AREA: Medicina Veterinária
SUBÁREA: Clínica e Cirurgia Animal
SPECIALTY: Clínica Veterinária
SUMMARY:

Abomasal ulcers are an important digestive disorder in cattle, negatively affecting health, welfare, and productivity, especially in dairy herds. Lesions range from superficial ulcers limited to the mucosa and muscular layer to complete perforations of the organ wall, with potentially fatal clinical consequences. Classified into five types (1 to 5), type 5 abomasal ulcer is characterized by perforation of the left lateral wall, leakage of abomasal contents into the omental bursa, and development of omental bursitis, which may progress to diffuse peritonitis. Despite its severity, this condition is rarely reported in the literature and presents nonspecific clinical signs, highlighting the need for detailed studies to support early diagnosis. Therefore, the present study aimed to identify the main clinical, epidemiological, and anatomopathological aspects of cattle diagnosed with type 5 abomasal ulcer treated at the Bovine Clinic of Garanhuns/UFRPE between 2014 and 2026. Thirteen dairy cattle were included (30% males, 70% females; 37.6 ± 17.7 months of age), most females being in the last third of gestation or up to 60 days postpartum. All animals presented comorbidities. Clinical findings included anorexia, apathy, tachycardia, reduced ruminal motility, and increased abdominal wall tension. On auscultation combined with ballottement and percussion of the right flank, abdominal fluid and tympanic resonance were detected. Fecal alterations were also observed, including decreased volume, darkened feces, and melena, as well as abdominal pain in more than half of the animals. Laboratory abnormalities included leukocytosis, increased plasma fibrinogen concentration, and hypoproteinemia. Ultrasonography revealed peritonitis in several cases, suggesting omental bursitis and type 5 abomasal ulcer in one animal, whereas abdominocentesis confirmed abdominal inflammation in all cattle. Negative outcomes (death or euthanasia) were observed in all cases, and diagnosis was confirmed at necropsy. Macroscopically, findings included focal or diffuse peritonitis, a distended omental bursa with thickened walls filled with brownish fluid containing feed particles and inflammatory exudate, and a perforated ulcer on the left abomasal wall. Histologically, marked fibrinonecrotic abomasitis was observed, with fungal involvement in two cases. The findings confirm the severe and highly lethal nature of this condition, whose nonspecific clinical and laboratory manifestations hinder antemortem diagnosis, reinforcing the importance of complementary diagnostic methods for confirmation. In this context, further studies are essential to explore the use of these tools as an early diagnostic strategy, enabling more effective clinical decision-making, reducing costs, and preventing animal suffering.

COMMITTEE MEMBERS:
Interno - ***.964.864-** - RODOLFO JOSE CAVALCANTI SOUTO - UFRPE
Externo à Instituição - ADONY QUERUBINO DE ANDRADE NETO - UFRB
Externo à Instituição - ELIAS JORGE FACURY FILHO - UFMG