881 resultados para Correlation between traits
Resumo:
Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
Resumo:
Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
Resumo:
Includes bibliography.
Resumo:
Pós-graduação em Ciência Florestal - FCA
Resumo:
Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
Resumo:
Pós-graduação em Genética e Melhoramento Animal - FCAV
Resumo:
Pós-graduação em Zootecnia - FMVZ
Resumo:
Pós-graduação em Agronomia (Proteção de Plantas) - FCA
Resumo:
INTRODUCTION: Biological age is an important parameter for growth and development assessment. It can be evaluated through the observation of radiographic changes in skeletal maturation of cervical vertebrae. OBJECTIVE: This study aims to: a) verify if there is correlation between growth curve and the stages of bone age of animals used in laboratories, by evaluating radiographs of the cervical vertebrae; b) correlate these stages with their correspondents in humans. METHODS: 35 Wistar rats were evaluated for a period of 160 days, starting at day 22nd (weaning), with cross sections for periodic weighing, length measurement and digital radiography. Radiographs of the cervical vertebrae (C2 and C3) were measured by means of a computer program (Radio IMP). Data were submitted to statistical analysis (ANOVA) and Pearson correlation. RESULTS: Growth spurt was characterized by fast increasing in weight and length. Through ANOVA, differences were observed in the cervical measurements between days 22, 97, 127, 157, 187 and 217 (p <0.001). A high correlation was found between increasing in body length and weight, as well as in cervical vertebrae height (r = 0.86). Increments in concavities of vertebrae were also observed, similar to humans. CONCLUSIONS: There is correlation between body growth and maturation of cervical vertebrae in rats. Despite the continuous development of concavities, it was not possible to clearly identify the 5/6 stages as in studies of cervical vertebrae maturation in humans.
Resumo:
Pós-graduação em Agronomia (Genética e Melhoramento de Plantas) - FCAV
Resumo:
Pós-graduação em Genética e Melhoramento Animal - FCAV
Resumo:
Pós-graduação em Agronomia (Agricultura) - FCA
Resumo:
Pós-graduação em Ciência Florestal - FCA
Resumo:
Pós-graduação em Ciências Biológicas (Botânica) - IBB
Resumo:
Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)