RESUMEN
Mycotoxicoses involving horses, rabbits and cattle have been studied. Fusarium tricinctum and T-2 toxin were isolated from all incriminated feedstuffs. Other isolated trichothecenes from the feed included HT-2, verrucarins and roridin. The toxins were separated, identified and quantitated using thin-layer chromatography, gas-liquid chromatography and mass spectrometry. T-2 toxin was detected in amounts varying from 0.5-204 ppm. The contaminated feedstuffs in connection with the affected horses and rabbits, included cereal grains (corn, cornstalks, bran and barley), whereas fescue hay was associated with the mucocutaneous findings in the bovine episode. The effects of the toxin(s) seemed to be host specific and varied according to the different animal species. Horses and rabbits developed primarily central nervous disorders with conspicuous pathological findings in the brain. Hepatitis and nephritis were also seen in naturally intoxicated horses and experimentally fed rats. Affected cattle developed mucocutaneous eruptions around the mouth and nostrils. In addition, dermonecrotic findings were observed involving the extremities, ear and tail. Fusariotoxicoses are toxic conditions of farm animals and man caused by the ingestion of cereal grains and forages contaminated by different fungal species of the genus Fusarium. A variety of clinical and pathological findings have been reported (5,6,10,13,15,17,31). This study concerns neuropathic findings in horses and rabbits and mucocutaneous lesions in cattle in association with T-2 toxin contamination.
Asunto(s)
Enfermedades de los Bovinos/etiología , Encefalomalacia/veterinaria , Enfermedades Transmitidas por los Alimentos/veterinaria , Enfermedades de los Caballos/etiología , Intoxicación por Setas/veterinaria , Conejos , Sesquiterpenos/análisis , Tricotecenos/análisis , Enfermedades de los Animales/etiología , Alimentación Animal/análisis , Animales , Bovinos , Caballos , Micotoxinas/análisis , Toxina T-2/envenenamientoRESUMEN
In a serologic survey on equine leptospirosis in Egypt, the following incidences of leptospiral serosensitivity were found: 1. Hospitalised horses 65/113 (57.5 %). 2. Hospitalised donkeys 90/125 (72.0 %). 3. Apparently healthy horses 21/72 (29.1 %). Sera of these animals were mostly reacting to serotypes butembo, pomona, icterohemorragiae, and grippotyphosa. Equine in Egypt are close animals to humans and may constitute a potential source of leptospiral infection. From the clinical point of view, it is very possible that ocular, hoof lesions and icterus in equines would be expected with leptospiral titres.
Asunto(s)
Anticuerpos Antibacterianos/análisis , Enfermedades de los Caballos/inmunología , Leptospirosis/veterinaria , Animales , Egipto , Enfermedades de los Caballos/patología , Caballos , Leptospira/inmunología , Leptospirosis/inmunología , Leptospirosis/patología , PerisodáctilosRESUMEN
Out of 500 dairy buffaloes examined for traumatic reticulitis in two farms, 51 buffaloes (10.2 %) were diagnosed as having the syndrome in its subacute and chronic forms. Of this 51 diseased animals, 39 had idiopathic mastitis (76.5 %). This high percentage of mastitis cases associated with traumatic reticulitis is considered as being four times the incidence of primary mastitis (20 %) in cattle. It is most likely that secondary mastitis is due to the contiguous spread of bacteria from the infected focus favoured by the devitalising effect of the foreign body syndrome.