Egg storage and breeder age are between the most important factors affecting egg lipids, chicken quality, and posthatch performance. To evaluate these factors, including their interaction, the impact of egg storage duration (5, 12, and 19 D), and breeder age (47 and 67 wk) was investigated in Arbor Acres broiler eggs and chickens. Total yolk fat content, chicken organ development at hatch and at 6 D of age, and posthatch performance (at 7 D and 35 D of age) were determined. Total fat content in fresh yolk was lower in 12 and 19 D stored eggs than in 5 D stored eggs (Δ = -2.42% on average). In hatchlings, the heart percentage was not affected by storage duration in the younger flock but was higher after 19 D than after 5 and 12 D of storage in the old flock (Δ = +0.09% on average). Residual yolk weight was higher after 12 D egg storage than after 5 D egg storage (Δ = +1.7 g), with 19 D egg storage in between. Liver and intestine percentage decreased with storage duration. Residual yolk weight (Δ = +1.09 g) and liver percentage (Δ = +0.18%) were higher in old breeders than in younger breeders. At day 6, chicken BW, yolk free body mass, liver percentage, and intestine percentage interacted between egg storage duration and breeder age with the strongest effects in chickens from older breeder after 19 D of storage. Heart percentage was lower after 19 D compared with 5 and 12 D of storage (Δ = -0.05% on average). Feed intake and feed conversion ratio were higher between day 0 to 7 and 0 to 35 after 19 D than after 5 D egg storage (Δ19-5 D = +12 g and +199 g; +0.11 points and +0.09 points, respectively). It can be concluded that when it is needed, eggs from younger breeders should be stored for a prolonged period (≥12 D) rather than those from older breeders.

中文翻译：

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鸡蛋储存时间和肉鸡育种年龄之间的相互作用对鸡蛋脂肪含量，鸡肉器官重量和生长性能的影响。

卵的储存和育种年龄是影响卵脂，鸡肉质量和孵化后性能的最重要因素之间。为了评估这些因素，包括它们之间的相互作用，在Arbor Acres肉鸡和鸡中研究了鸡蛋储存时间（5、12和19 D）和育种年龄（47和67 wk）的影响。测定总卵黄脂肪含量，孵化时和6日龄时的鸡器官发育以及孵化后的表现（7日龄和35日龄时）。12和19 D储存鸡蛋中的新鲜蛋黄总脂肪含量低于5 D储存鸡蛋中的平均脂肪含量（平均Δ= -2.42％）。在孵化场中，年轻鸡群的心脏百分比不受贮藏时间的影响，但在19 D之后比在老鸡群中贮藏5和12 D后更高（平均Δ= + 0.09％）。储存12 D鸡蛋后的蛋黄残留重量高于储存5 D鸡蛋后的蛋黄重量（Δ= +1.7 g），中间有19 D鸡蛋。肝和肠的百分比随储存时间的延长而降低。老种鸡的剩余蛋黄重量（Δ= +1.09 g）和肝脏百分比（Δ= + 0.18％）高于年轻种鸡。在第6天，鸡的体重，蛋黄游离体重，肝脏百分比和肠百分比在蛋的储存时间和育种年龄之间相互作用，在储存19天后，对年长的种鸡的影响最大。19 D后的心脏百分比低于5 D和12 D的存储百分比（平均Δ= -0.05％）。19天后0至7天和0至35天之间的采食量和饲料转化率高于5天储蛋后（Δ19-5D = +12 g和+199 g；分别为+0.11点和+0.09点） 。