Variação sazonal na morfologia dos ductos eferentes distais em codorna doméstica mantida em cativeiro experimental

Abstract

Variação sazonal na morfologia dos ductos eferentes distais em codorna doméstica mantida em cativeiro experimental.Ciência Rural, v.38, n.6, set, 2008. Ciência Rural, Santa Maria, v.38, n.6, p.1643-1649, set, 2008 ISSN 0103-8478

Histomorphometry of the epididymal region of domestic quail (Coturnix coturnix) of the italian variety

“…The PED were preceded by the extratesticular rete testis (RT), as well as the vas deferens succeeded the DE. This pattern from epidydimal region (ER) tubules had been characterized in several species of birds (TINGARI, 1972(TINGARI, , 1973HESS et al, 1976;AIRE, 1979aAIRE, , 1979bAIRE, , 1980LAKE, 1981;STEFANINI et al, 1999aSTEFANINI et al, , 1999b, including the Coturnix coturnix japonica (AIRE, 1979b;JONES, 1982JONES, , 1988, and Coturnix coturnix (ORSI et al, 2007a(ORSI et al, , 2007b(ORSI et al, , 2008.…”

“…Nevertheless, in the Italian quail variety the spermatogenesis kinetics showed a seasonal "circum-annual" cyclic pattern from the testis histology (ORSI et al, 2005). Seminiferous tubules behavior (ORSI et al, 2005), showed a similar pattern verified along the excurrent ducts of the testis, including the entire ER (ORSI et al, 2007a(ORSI et al, , 2007b(ORSI et al, , 2008, and into the epithelium lining and luminal compartment of the vas deferens (VIEGAS et al, 2011). Also, the testis somatic index from the Italian quail (ORSI et al, 2005), reinforced those concept of a "semi cyclic" annual testicular cycle occurring in this species (ORSI et al, 2005).…”

“…Although, in previous papers had been characterized that the main physiologic role from the epithelium cells HERMO, 1988), and in some birds (STEFANINI et al, 1996(STEFANINI et al, , 1999a(STEFANINI et al, , 1999bOZEGEB et al, 2006;ORSI et al, 2007aORSI et al, , 2007bORSI et al, , 2008VIEGAS et al, 2011). A cyclic pattern from the male sexual activity in the domestic quail of Italian variety (Coturnix coturnix) was described, having base on the spermatogenesis kinetics of this bird (BARALDI-ARTONI et al, 1997, 1999.…”

“…Four distinct phases had been characterized for the quail male sexual cycle being identified as an active or proliferative phase observed in the spring, a regressive phase verified in summer, a quiescent or recessive phase noted in autumn and a recrudescent phase reported in winter with tropical altitude climate in the Brazil (ORSI et al, 2005;ORSI et al, 2007aORSI et al, , 2007bORSI et al, , 2008. On the other hand, the quiescent phase observed on the fall presented small durability, comprising approximately 30 days distributed between the last fifteen days of March and the first fifteen days of April.…”

“…On the other hand, the quiescent phase observed on the fall presented small durability, comprising approximately 30 days distributed between the last fifteen days of March and the first fifteen days of April. During the other days of the autumn and in the other seasons the spermatogenesis kinetic was preserved (ORSI et al, 2005(ORSI et al, , 2007a(ORSI et al, , 2007b(ORSI et al, , 2008.…”