CAMPOS, E. M.; http://lattes.cnpq.br/9818453143725127; CAMPOS, Édipo Moreira.
Resumen:
This dissertation consists of two articles. The first one describes an outbreak of Senna
obtusifolia poisoning in sheep of a semi-extensive breeding in the city of São Bento-PB.
In a picket severely invaded by S. obtusifolia, ten of sixty sheep showed muscle
weakness, one survived and nine died after 24-76 h of clinical evolution. The observed
clinical signs were followed by difficulty staying in season, reluctance to move, muscle
tremors, walking with rigid pelvic limbs, regurgitation, and dark brown urine. Serum
creatinine phosphokinase was increased in all sheep examined. At necropsy of four
sheep that died, only one animal was observed a pale area in the femoral biceps muscle.
Histologically, various degrees of necrosis and polyphasic segmental degeneration were
observed in the skeletal muscles of all sheep examined. Although the plant is common
in northeastern Brazil, spontaneous intoxication it has not been described in sheep,
probably because animals do not ingest it or due to variations in toxicity. In the second
article we describe an outbreak of Senna occidentalis poisoning in sheep of a semiextensive
breeding in the city of São José de Espinharas-PB. The sheep grazed on
pickets severely infested by S. occidentalis and with low availability of forage. Of 240
sheep, twenty were affected. The affected animals had difficulty to stand and to move,
muscle tremors, rigids pelvic members, regurgitation, and dark brown urine. Serum
levels of creatine kinase, aspartate aminotransferase and lactate dehydrogenase are
increased. At the necropsy of three sheep that died, only one animal was observed a pale
area in the longissimus lumbar muscle. The histopathological findings were multifocal
polyphasic segmental degeneration and necrosis of skeletal muscles fibers. The
diagnosis of poisoning was based on the epidemiological, clinical-pathological and
biochemistry findings.