Timpanismo ruminal crônico secundário à hipoplasia de pregas de omaso em dois bovinos / Chronic ruminal bloat secondary to omasal laminae hypoplasia in two cattle

Um novilho normando e outro charolês apresentando distensão abdominal, diarreia intermitente e timpanismo ruminal crônico, que iniciaram após desmame, foram enviados para necropsia. Observou-se ausência de pregas omasais associada à hipoplasia do órgão, assim como redução de tamanho das papilas ruminais e reticulares. Com base nas lesões e histórico, conclui-se que o timpanismo ruminal foi ocasionado pela falha no desenvolvimento do omaso...

Two emaciated juvenile steers, one Normande and one Charolaise breed with abdominal distension, intermittent diarrhea and chronic ruminal bloat that had begun at weaning were necropsied. Absence of the omasal laminae with omasal hypoplasia were found together with loss of ruminal papillae and reticular folds. Based on the lesions and history we concluded that the ruminal bloat was due to a development failure of the omasum...

Left Paramedian Abomasopexy in Cattle

Aims of surgery of left displacement of the abomasum (LDA) are to return the abomasum to its original position and create a permanent attachment in the position to prevent recurrence. Left paramedian abomasopexy was performed on six Holstein cows with LDA because normal position of the fundus of the abomasum is located in the left of the midline and the displacement initially only involves the fundus of the abomasum. All cows were recovered without recurrence of LDA. It is considered that the left paramedian abomasopexy could be a major alternative as a surgical treatment of LDA.

[ case report of atrial fibrillation associated with left displacement of abomasum in a cow]

A three years old Holestein cow was admitted to large animal clinic of Tehran faculty of veterinary medicine with inappetence and decreased milk yield. Physical examination showed increased respiratory rate and irregular heart beats. The rumen was hypotonic and tympanitic resonance sound [ping] was heard on the upper half of 11-13 ribs in the left side. Left side displacement of abomasums was diagnosed and because of irregular heart beats, ECG was recorded by using a base apex lead. Irregular R-R intervals absence of P waves and presence of F waves were seen on the ECG. Atrial fibrillation as a secondary complication to displaced abomasums was diagnosed. The displaced abomasums corrected by bilateral laparatomy. Atrial fibrillation is usually a secondary condition due to gastrointestinal disorders in cattle and treatment of primary disease can eliminate atrial fibrillation