Contribuição ao estudo das doenças respiratórias em caprinos

Abstract

This work was conducted in a farm livestock property located in the urban area of Rio de Janeiro with creation of horses, cattle, buffalo, sheep, ostriches, poultry and about 400 goats of different ages and the presence of wild animals (opossum, alligator, capybaras and birds) viewed the environment. The goats were destined for dairy holding, confined in shed, without separation by age category and gender. In the first phase of the study, which consisted of visits to the property, we proceeded to evaluation of this, which showed high morbidity and mortality (approximately 50% in this latter), which were related not only to the etiologic agents in herds, considering the conjunct creation several animal species, but especially due to poor hygiene and management of the animals. In the second phase of the study, seven animals were selected and transferred to the Federal Rural University of Rio de Janeiro, where they were fed controlled and management proper of hygiene and sanitary and underwent daily clinical evaluation during the seven days that were kept in stalls for goats with ratings hematologic, serum biochemical, radiographic and ultrasonography periodics. Studies were also conducted on oxidative stress related to iron metabolism in selected animals, seeking to reproduce the basic treatments of supplementation indiscriminate with iron dextran or even with veterinary recommendation, trying to observe biochemical, cellular and antioxidants. Were also performed macroscopic and histopathological examinations of selected animals after euthanasia, aiming to correlate to the phases of the study. Based on the evaluation of the property, evidenced clinical signs and inexistence of effective control and prevention of diseases in the herd was suspected high prevalence of diseases, although parasitological examination of fecal samples was inconsistent with the clinical findings and management of animals. The results of the hemogram and serological tests confirm in part the clinical findings. In addition, the environmental challenges to which animals were undergone may aggravate or precipitate respiratory, locomotor and reproductive problems observed. The application of iron aggravated clinical condition of the animals with respiratory disease, causing hematological and biochemical alterations. Was also observed that the production of thiobarbituric acid reactive species (TBARS) increased markedly in diseased animals, confirming the effect of iron on lipid peroxidation, which is greater in animals with infections