Philander frenatus is an important marsupial for the maintenance and conservation of the Atlantic Rainforest, however, it has biological characteristics that are still little explored. The study of the reproductive biology is an important key to understand the species reproductive strategies and to improve the development of conservation and management activities. The present study aimed to conduct a histological and morphometric investigation of the testis structure and function of P. frenatus. The average body and testicular weight were 445 g and 0.74 g, respectively, with a gonadosomatic index of 0.17%. The seminiferous tubules occupying 64.95% of the organ, totalising 9.26 m per gram of testis. The tubulesomatic and epitheliumsomatic indexes were 0.10% and 0.07%, respectively. Philander frenatus showed cell loss of approximately 98% during the proliferative phase and the spermatogenic yield was 10.3 cells. The high loss during the mitotic phase contributed to the low spermatogenic yield. The testicular parenchyma was composed of 35% of intertubular components, one of the highest proportions observed in mammals. Leydig cells were responsible for approximately 25% of the testes, followed by lymphatic space (6.44%), blood vessels and connective tissue (4% together). The organisation of the intertubular components resembles the Fawcett III category. The volume and number of Leydig cell per gram of testis were 2,627.12 µm3 and 91.28 × 106 cells, respectively. High investment in the intertubular compartment, specifically number and volume of Leydig cells in P. frenatus is consistent with territorial behaviour and polygynic mating system, which have greater androgenic capacity.
RESUMO.Conforme demonstram vários estudos, a nutrição de cães hospitalizados é de extrema importância para a recuperação do paciente. Porém, infelizmente, muitas vezes esse aspecto é negligenciado na Medicina Veterinária. Assim, desenvolveu-se este trabalho com o objetivo de esclarecer a importância da implementação de suporte nutricional adequado para cães internados e sua relação com os quadros clínicos mais comumente encontrados na rotina.Palavras chave: Canino, enteral, metabolismo, parenteral, patologias Hospitalized dogs clinical nutrition: ReviewABSTRACT. Several studies show that nutrition of hospitalized dogs is important for patient recovery. However this aspect is often neglected in veterinary medicine. Thus, this work was developed with the purpose of clarifying the importance of the adequate nutritional support implementation for hospitalized dogs and its relation with the most commonly found in the clinical routine.Keywords: Canine, enteral, metabolism, parenteral, pathologies Nutrición clínica de perros hospitalizados: Revisión REUMEN. Como demuestran varios estudios, la nutrición de perros hospitalizados es de extrema importancia para la recuperación del paciente. Sin embargo, muchas veces ese aspecto es descuidado en la Medicina Veterinaria. Así, se desarrolló este trabajo con el objetivo de esclarecer la importancia de la implementación de suporte nutricional adecuado para perros internados y su relación con los cuadros clínicos más comúnmente encontrados en la rutina. Palabras clave: Canino, enteral, metabolismo, parenteral, patologías IntroduçãoA maioria dos animais que necessitam de internação em clínicas e hospitais veterinários apresentam quadro clínico grave e alguma alteração sistêmica que pode expor o mesmo a risco de morte, exigindo intervenção imediata do médico veterinário. Para agravar o quadro clínico, anorexia ou desnutrição estão associadas a esses distúrbios sistêmicos em boa parte dos casos ou ainda podem se desenvolver em animais criticamente doentes (Chan and Freeman, 2006). Na prática veterinária o suporte nutricional ainda possui prioridade pequena e não faz parte da rotina médica de clínicas e hospitais. É importante lembrar que, durante os períodos de privação de nutrientes, um paciente doente ou traumatizado, preferencialmente, irá catabolizar massa magra quando o fornecimento de calorias for
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