Although conventional battery hen cages are still prevalent in the global market, the movement towards greener methods is gaining momentum beyond Europe. However, egg quality and the degree to which it is affected by the different systems of production remains a controversial subject and there is still no consensus among researchers. Using PRISMA guidelines the literature reporting the housing systems effects of egg quality was systematically investigated. The related studies with different eggs production systems by databases including Web of Science, PubMed, and Scopus (between 1992 and 2020) were retrieved. Were adopted inclusion criteria, accepting studies that discussed measurable effects related to the topic that was written in English, Portuguese and Spanish. The search results which met the inclusion criteria were evaluated and included in the review In this regard, out of 3380 explored articles in the identification stage, 50 studies were used in the systematic review. Hen housing systems from different countries were recapped in this study. A brief outline of published scientific evidence demonstrates that the production system can change the egg quality. The overall rank order considering the type of system studied was cage (88%) > free-range (32%) > floor (30%) > organic (22%) and aviary (8%). Among the continents researched, Europe proved to have the most developed research relating to the subject. Egg weight was the most studied quality response. This study summarizes the housing system types used in egg production and provides a roadmap for future research regarding egg production. Robust trials evaluating different housing systems in the same conditions, and evaluating the interaction of factors such as genetics and age of animals, evaluating more responses of internal and external quality of eggs are lacking.

尽管传统的电池鸡笼在全球市场上仍然很普遍，但在欧洲以外，采用更环保方法的运动正在获得动力。然而，鸡蛋质量及其受不同生产系统影响的程度仍然是一个有争议的话题，研究人员之间仍然没有达成共识。使用 PRISMA 指南，系统地研究了报告鸡舍系统对鸡蛋质量影响的文献。检索了 Web of Science、PubMed 和 Scopus（1992 年至 2020 年之间）数据库中不同产蛋系统的相关研究。采用纳入标准，接受讨论与用英语、葡萄牙语和西班牙语撰写的主题相关的可衡量影响的研究。对符合纳入标准的检索结果进行评价并纳入系统评价为此，在识别阶段的3380篇探索文章中，系统评价使用了50篇研究。本研究回顾了来自不同国家的鸡舍系统。已发表的科学证据的简要概述表明，生产系统可以改变鸡蛋质量。考虑到所研究系统类型的总体排名顺序是笼子 (88%) > 自由放养 (32%) > 地板 (30%) > 有机 (22%) 和鸟舍 (8%)。在所研究的大陆中，欧洲被证明拥有与该主题相关的最发达的研究。蛋重是研究最多的质量响应。本研究总结了鸡蛋生产中使用的鸡舍系统类型，并为未来关于鸡蛋生产的研究提供了路线图。