Ovarian radiographic and direct measurements of Japanese Quail ( Coturnix coturnix japonica ) submitted to light restriction

Author:

Albuquerque M.1,Guedes R.2,Dornbusch P.2,Laskoski L.3,Mangini P.4,Lange R.2

Affiliation:

1. Universidade Federal do Paraná, Brazil; Vida Livre Medicina de Animais Selvagens, Brazil

2. Universidade Federal do Paraná, Brazil

3. Universidade Federal do Acre, Brazil

4. Vida Livre Medicina de Animais Selvagens, Brazil

Abstract

ABSTRACT Often, in pet birds, any stimulus to lay eggs is unwanted in order to reduce reproductive diseases and disorders. The objectives of this study were: to determine the time necessary to promote ovary involution after an eight hour photoperiod using laying Japanese quails (Coturnix coturnix japonica); to connect the ovarian radiographic measurements with egg production; and to compare these measurements with direct ovary data obtained at necropsy. Birds were separated into three groups: 12h/24d (control group - 12h photoperiod for 24 days), 8h/24d and 8h/36d (8h photoperiod for 24 and 36 days). After euthanasia, all cadavers were x-rayed to measure ovary length and height. Birds were necropsied to measure ovarian length and weight. Results: radiographic ovary length demonstrated strong and positive correlation (r=0.96) with direct ovary length of all three groups; laying quails showed higher ovary height (p=0.025) and length (p=0.009) than non-laying quails; eight hours of artificial light per day promotes ovary length (p=0.025) and weight (p=0.009) reduction. Conclusions: radiography can estimate the ovary measure and indicate posture; an eight hour photoperiod of 24 days is not enough to promote ovarian regression, while the use of reduced photoperiod for 36 days promotes significant ovary involution.

Publisher

FapUNIFESP (SciELO)

Subject

General Veterinary

Reference19 articles.

1. Reproductive diseases of pet bird species;BOWLES H.L.;Vet. Clin. N. Am. Exot. Anim. Pract.,2002

2. Avian circadian organization: a chorus of clocks;CASSONE V.M.;Front. Neuroendocrinol.,2015

3. Atlas de medicina, terapêutica e patologia de animais exóticos;CUBAS Z.S.,2007

4. Artificial light at night advances avian reproductive physiology;DOMINONI D.;Proc. R. Soc. A.: Biol. Sci.,2013

5. Surgery of the avian reproductive tract;ECHOLS M.S.;Semin. Avian Exotic Pet Med,2002

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3