Histogenesis Study of Metanephros Kidney in Goat Fetus

The aim ofthis study was to investigate the differentiation of nephron and other structures of metanephric kidney in goat fetuses. The study was descriptive which was conducted in 2013 at the Islamic Azad University of Tabriz. The approximate age of the embryos was determined based on the formula presented by Gal et al (1994) in order to estimate the age of the goat fetus. Taking into account the age of the fetus, they were divided into 4 groups of 25 fetuses in each. The first, second, third, and fourth groups were on 38-60, 61-90, 91-120, and 121-150 days of pregnancy, respectively. The kidneys of the fetus were isolated following autopsy of the baby's abdominal cavity in order to examine the metanephros tissue differentiation. Isolated samples were placed in 10% buffered formalin solution. They were examined under the optical microscope after the preparing of tissue sections. Data analysis among the groups was conducted using ANOVA and Tukey's multiple comparison tests as well as SPSS 10 software. According to the results there was a significant difference between the four groups since 30-days old until birth in terms of the mean length (p