RESUMO
Oral malignancy is rare in chimpanzees. A 34-year-old female chimpanzee (Pan troglodytes) at Kumamoto Sanctuary, Japan, had developed it. Treatment is technically difficult for chimpanzees while malignant neoplasm is seemingly rising in captive populations. Widespread expert discussion, guidelines for treatment, especially for great apes in terminal stages is urgently needed.
Assuntos
Animais de Zoológico , Doenças dos Símios Antropoides/diagnóstico , Neoplasias Bucais/veterinária , Pan troglodytes , Sarcoma/veterinária , Animais , Doenças dos Símios Antropoides/patologia , Doenças dos Símios Antropoides/terapia , Evolução Fatal , Feminino , Hepacivirus/isolamento & purificação , Japão , Neoplasias Bucais/diagnóstico , Neoplasias Bucais/terapia , Sarcoma/diagnóstico , Sarcoma/terapiaRESUMO
The administration of cadmium, as food supplement, its bioaccumulation, and the effects on the development of tilapia Oreochromis niloticus were investigated. The average size and weight and its behavior compared with controls were investigated during the period January 31, 1997, until March 31, 1999. At intervals of 60 days the measurements of size and weight were performed, and the concentration of cadmium in feces, water, muscular tissue, and viscera were determined by atomic absorption spectroscopy. The initial average cadmium concentration in food was 5 mg small middle dotkg(-1) and only after 6 months a small effect on size and weight could be observed. With increases in cadmium concentration to 50 mg small middle dotkg(-1), beginning after the 7th month, and 100 mg small middle dotkg(-1) after the 16th month, a clear difference in size and weight and also in behavior could be observed. An LC(50) value of 40 mg small middle dotkg(-1) was observed after the 23rd month.