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Macroscopic and Morphometric Evaluation of Japanese Quail (Coturnix coturnix japonica) Oviduct When Fed Diets With Different Protein Levels

SMB Artoni APM Carneiro G Giacomini VMB Moraes CSS Araújo LF Araújo About the authors

The twelve domestic quail used in this study were divided into three groups, each with four birds. The groups received each a different treatment using standard feed containing three different levels of protein (16%, 20% and 24%). The treatments were continued for a period of fifteen weeks, after which the quails were immediately weighed and then killed. After opening the abdominal cavity and eviscerating the gastrointestinal tract, the ovaries and oviducts were dissected and weighed. Using a packymeter, the different parts of the oviducts were measured: infundibulum, magnum, isthmus, uterus and vagina. The number of folds present in the magnum and the isthmus were evaluated. Histologic sections of the magnum, isthmus and uterus were used to measure the thickness of their epithelial and glandular layers. The data obtained was statistically analysed using a Variance analysis (entirely casual distribution). It was concluded that there were no significative differences on body weight, ovary weigth, oviduct weigth and between the lengths of the different parts of the oviduct as well as regarding the number of folds in the magnum and the isthmus. It was concluded that there was significative differences were also found regarding the thickness of the epithelial layer of the isthmus in the birds treated with the feed containing 20% protein. Moreover there was a significative difference between the thickness of the glandular layer of the magnum, the isthmus and that of the uterus in the birds treated with 24% protein feed when compared to the quails that were given a 16% and 20% protein feed. Diet with 24% protein increased the glandular layer thickness of the magnum, isthmus and uterus that it could result in improvement in the weight of the eggs and in the shell quality.

morphometry; oviduct; protein levels; quail

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