Histological characteristics of the gonads of pig fetuses and their relationship with fetal anatomical measurements

Histological characteristics of the gonads of pig fetuses and their relationship with fetal anatomical measurements

Author Pontelo, Thais Preisser Google Scholar
Miranda, Jose Rafael Google Scholar
Felix, Matheus Augusto Rodrigues Google Scholar
Pereira, Barbara Azevedo Google Scholar
Silva, William Eduardo da Google Scholar
Avelar, Gleide Fernandes Google Scholar
Mariano, Flavia Cristina Martins Queiroz Autor UNIFESP Google Scholar
Guimaraes, Gregorio Correa Google Scholar
Zangeronimo, Marcio Gilberto Google Scholar
Abstract The objective was to evaluate the histomorphometric characteristics of the testis and ovaries of pig fetuses at different gestational ages, as well as their correlation with some fetus measurements. Forty-four fetuses were separated for gender (male and female) and gestational age (50, 80 and 106 days of gestation). After slaughter, fetuses had their body length, head and thoracic perimeters measured and their gonads submitted to histomorphometric analyses. The gonadal characteristics at different gestational ages were statistically compared, correlations with the fetal measurements were performed and equations to predict the gonadal characteristics from the fetal measurements were obtained. The testis weight logarithmically increased along pregnancy, whereas ovary weight increased in a linear manner. The cordonal length and number of Sertoli cells were positively correlated with the fetal measurements, being higher at 106 days gestation, while the nuclear volume of these cells were negatively correlated. The total number of follicles was higher at day 80 and 106 of pregnancy. The number of oogonia decreased along the pregnancy, however, their nucleus size was increased. The number of follicles and volume of oogonia were positively correlated with the fetal measurements, while the number of oogonia was negatively correlated. Equations were obtained for the prediction of gonadal characteristics of fetuses. We concluded that in pigs testis cell proliferation, ovary development and histological organization was more pronounced during the final third of pregnancy. Fetal weight and size were strongly related to gonadal development, and can be used to estimate the histological characteristics of gonads.
Keywords Embryology
Follicles
Morphology
Oogonia
Sertoli cells
Swine
Testis
xmlui.dri2xhtml.METS-1.0.item-coverage Oxford
Language English
Sponsor CAPES (PNPD Institucional)
FAPEMIG
CNPq Minitub do Brasil
Fazenda Sao Paulo (Oliveira-MG, Brazil)
Postgraduate Program in Veterinary Sciences UFLA
Grant number CAPES: 2457/2011
FAPEMIG: PPM- 00359-14
FAPEMIG: CVZ - APQ - 04446-10
CNPq: 446288/2014-4
Date 2018
Published in Research In Veterinary Science. Oxford, v. 117, p. 28-36, 2018.
ISSN 0034-5288 (Sherpa/Romeo, impact factor)
Publisher Elsevier Sci Ltd
Extent 28-36
Origin http://dx.doi.org/10.1016/j.rvsc.2017.11.005
Access rights Closed access
Type Article
Web of Science ID WOS:000430646300004
URI https://repositorio.unifesp.br/handle/11600/55700

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