Comparação de manejo de hamster sírio em micro isolador e em gaiola aberta

Abstract

Male and female Syrian hamsters were used to investigate the influence of two husbandry systems on their physiological aspects. The hypothesis is that there may be physiological, behavioral and final results differences in a litter that is managed in different housing systems (open cage or micro isolator). For the present study, 5 male and 5 female hamsters were kept separately in open cages and 5 male hamsters and 5 females separately in micro isolators from the age of 28 to reproductive age (60 days). Animal management was controlled by monitoring the supply and consumption of water, feed and environmental enrichment provided, with the micro isolator group receiving sterilized water and management carried out exclusively at a changing station. To evaluate metabolic changes caused by water supply, urine tests were carried out on dipstick in sample pools. After reaching reproductive age, ten couples were formed, 5 of them in micro isolators and the other 5 in open cages, uniting a male with a female from the same experimental group to evaluate reproductive data. The animals were weighed until the week of the females' birth, followed by counting and sexing the puppies for data analysis. The groups demonstrated through growth curves that the environment in which the animals are housed has an influence on the animal's physiology. The study showed differences in weight gain in addition to a lower rate of stress in the female, resulting in less aggression towards the male after mating. of couples when comparing the two experimental groups. It also showed a difference in the number of puppies per female between the groups. In addition to providing evidence that housing conditions can influence the hamster's physiology, there is evidence that it also influences the animals' aggressive behavior. This study aims to assist peers in breeding the species in breeding and experimental animal facilities, in addition to ensuring confidence in the reproducibility of future studies, since there is currently not enough information for the correct management of the biomodel.