RESUMO
The significance of coccidiosis in the cat is discussed and the clinical signs of infection are described. The occurrence of subclinical infection with Isospora felis in 49 of 58 cats in a colony is reported. Treatment with a 20% solution of sulphadimethoxine at a dose rate of 50 mg per kg bodyweight, administered in the food daily for 14 days, was successful in eradicating the infection. Sulphadimidine appeared to have no effect on the number of oocysts in the faeces of one cat. Ancillary hygienic measures included the use of disposable feeding and drinking utensils, frequent removal and destruction of faeces and scrubbing of sanitary trays and cages with hot 5% sodium carbonate solution.
Assuntos
Doenças do Gato , Coccidiose/veterinária , Animais , Doenças do Gato/tratamento farmacológico , Doenças do Gato/parasitologia , Gatos , Coccidiose/tratamento farmacológico , Coccidiose/parasitologia , Fezes/parasitologia , Abrigo para Animais , Sulfadimetoxina/uso terapêuticoRESUMO
The mercury levels in 69 muscle samples from fish weighing from 0.3 to 200 kg caught in Moreton Bay, Queensland, in the latter half of 1976 ranged from less than 10 to 2,030 ng/g. Mercury levels in blood samples from 53 humans and 100 dogs in Brisbane almost all contained less than 10 ng/ml while the level in 162 cats sampled ranged from less than 10 to 329 ng/ml. Chronic methylmercurialism developed in 2 cats dosed daily with methylmercury, bound to cysteine, at the rate of 0.6 mg/kg body weight for 74 and 77 days respectively. Terminal clinical signs included anorexia, weight loss, knuckling over at the carpus and tarsus, hypermetria initially involving the forelegs and later the hindlegs, sluggish reflexes, paresis involving all limbs, persistent crying, apparent blindness, tonic and clonic convulsions and salivation. Pathological changes were confined to the nervous system and included degeneration of neurones and perivascular cuffing in the cerebrocortical grey matter, focal atrophy of the granular layer, focal spongiosus of the molecular layer and degeneration and loss of Purkinje cells in the cerebellum and demyelination in the fibre tracts of the dorsal funiculus, mainly the fasciculus cuneatus and in the lateral and ventral corticospinal tracts. Terminal blood methylmercury levels were in excess of 18 microgram/ml, while brain methylmercury levels ranged from 21.0 to 28.4 microgram/g. The liver and kidney contained the highest total levels of mercury of 50 to 80 microgram/g, of which 23 to 37% was inorganic.