Development, Cellular Growth, and Function of the Avian Oviduct. II. A Comparative Study on the Changes of Cellular Components in each Region of the Domestic Fow1 (Gallus domesticus) Oviduct during a Reproductive Cycle

• DOI: 10.1139/y72-100
• Publication Date: 2017-10-15T14:42:08Z
• Authors: John Y.-L. Yu; R. R. Marquardt; G. C. Hodgson
• Keywords: Oviduct; Infundibulum

The levels of cellular components in each region the domestic fowl (Gallus domesticus) oviduct at various stages a reproductive cycle (developing, laying, and regressing) were compared. There differential growth patterns (infundibulum, magnum, isthmus, uterus, vagina) during cycle. magnum weight, relative to other regions oviduct, increased most rapidly development growth, decreased similar manner regression oviduct. Development primarily associated with hyperplasia (increase total DNA), lesser extent hypertrophy (dry matter/DNA). Regression was essentially reversal developing oviduct: both DNA ratios dry matter/DNA decreased.The highest RNA/DNA protein/DNA found laying-hen particularly isthmus. isthmus laying hen, being actively involved formation secretory soluble insoluble proteins, respectively, also had respective protein/DNA. infundibulum, vagina, consisting mainly connective tissue musculature, are not proteins. These low All functionally quiescent regressing oviducts protein/DNA.The nonprotein nitrogen, when expressed on cell unit basis, tended parallel those protein while lipid remained relatively constant for all throughout