HISTOLOGICAL FEATURES OF UTERUS, OVIDUCTS AND OVARIES OF NEWBORN, PAY-PUBESCENT, AND PUBESCENT MIXED-BREED SOWS (Sus scrofa domestica ? L. 1758).

C. M. R. MONTEIRO, R. G. CARVALHO

Abstract


The aim of this study was to investigate the histological changes occuring during the development of the swine reproductive organs. Ten samples of right and left uterine horns, oviducts and ovaries of newborn, pay-pubescent (4 months old), and pubescent (8 months old) sows were analyzed. The material was processed routinely, stained with Haematoxylin and Eosin and examined under the light microscope. The endometrium of newborn females? uterus was coated by pseudoestratified epithelium and absence of glands, whereas in the miometrium only the internal circular layer was observed, badly delimited of the proper blade and the perimetrium was typical. The mucosa of oviducts (ampolar region) presented small folds without ramifications, coated with pseudostratified epithelium. The muscular consisted of thin inner and outer circular layer and the serous was discrete. The ovaries were coated with cubical simple epithelium, the cortex showed no albuginea tunic and many primordial follicles, and the medulla was formed by dense connective tissue with small blood vassels. Thick connective layer and discrete glands were seen in the endometrium of the pay-pubescent females? uterus, whose miometrium was formed by two thick stratus, the inner circulate and the outer longitudinal, and the perimetrium was discrete. Oviducts? ucosa showed high folds with primary and secondary ramifications, coated with pseudostratified and ciliate cylindrical simple epithelium, whereas the muscular showed only one layer, the inner circulate and the serous was typical. The ovaries were coated by cubical and pavimentous simple epitheliums. The cortex presented thick albuginea tunic, primordial, primary, secondary and Graaf follicles, and a lot of cicatricial corpus luteum and the medulla was formed by connective tissue with dilated lymphatic and blood vassels. In the pubescent females, the uterus and the oviducts presented the same morphology with few variations, although coiled epithelial cells involved by concentric connective tissue in the medulla were observed in the ovaries. It was concluded that differences existed in the evolution of the organs in newborn and pay-pubescent females, not occurring the same between the pay-pubescent and pubescent sows.
KEY-WORDS: Histology Uterus. Oviducts. Swine.



DOI: http://dx.doi.org/10.15361/2175-0106.2006v22n3p223-228