The aim of the study was to examine the effects of age of broiler breeders and storage duration on quality traits and blastoderm of eggs obtained from Marshall broiler breeders. A total of 320 eggs were collected from 2 flocks, 43 wk and 65 wk of age. Eggs were sampled immediately after collection and subjected to a storage duration of 0 (control), 4, 7, and 10 D at 16°C and 80% RH. Extended storage of eggs until 10 D from 65-wk-old breeders resulted in significant deterioration of egg quality traits. Egg weights decreased, whereas egg weight loss increased with storage duration for both breeder ages. Egg traits such as yolk diameter increased with interaction effects, whereas yolk heights declined. However, yolk weight and yolk percentage were observed to increase with age of breeders during egg storage. With a storage of 10 D, albumen diameter, albumen weight, and albumen percentage were higher with 43-wk-old breeders. Albumen pH rapidly turned alkaline from 4 D of storage period for both breeder ages and increased until about 9.85 at 10 D of storage. Haugh units declined with age and storage effects and were higher for eggs from 43-wk-old breeders. Blastoderm diameter was also affected as it decreased with storage for 65-wk-old breeders especially at day 7 of eggs storage. The results suggest that breeder's age and storage duration significantly influenced important egg quality traits and blastoderm expansion of Marshall broiler breeder eggs especially from older breeders.

该研究的目的是检验肉鸡育种家的年龄和贮藏时间对从马歇尔肉种鸡获得的蛋的品质性状和胚盘的影响。从2个鸡群（43周龄和65周龄）中总共收集了320个卵。鸡蛋在收集后立即取样，并在16°C和80％RH下的储存时间为0（对照），4、7和10D。从65周龄的种鸡开始将卵长期储存直至10 D，会导致卵品质性状的显着恶化。在两个育种年龄中，鸡蛋的重量减少，而鸡蛋的重量减少则随着储存时间的增加而增加。蛋性状如蛋黄直径随着相互作用的影响而增加，而蛋黄高度却下降。但是，观察到蛋的重量和蛋黄百分比随着种鸡年龄的增长而增加。储存10 D，蛋白直径 43周龄育种者的蛋白重量和蛋白百分比更高。在两个育种年龄中，蛋白的pH从存储期4 D迅速变为碱性，并在存储10 D时升高至约9.85。霍夫单位随着年龄和储藏效果的下降而下降，而来自43周龄育种者的卵的单位更高。对于65周龄的种鸡来说，胚芽直径也受到影响，因为它随着存卵的减少而减小，尤其是在卵存留的第7天。结果表明，育种者的年龄和储存时间显着影响了重要的蛋品质性状和马歇尔肉鸡育种蛋的胚盘膨胀，尤其是来自较早育种者。霍夫单位随着年龄和储藏效果的下降而下降，而来自43周龄育种者的卵的单位更高。对于65周龄的种鸡来说，胚芽直径也受到影响，因为胚芽直径会减小，尤其是在卵的第七天。结果表明，育种者的年龄和储存时间显着影响了重要的蛋品质性状和马歇尔肉鸡育种蛋的胚盘膨胀，尤其是来自较早育种者。霍夫单位随着年龄和储藏效果的下降而下降，而来自43周龄育种者的卵的单位更高。对于65周龄的种鸡来说，胚芽直径也受到影响，因为它随着存卵的减少而减小，尤其是在卵存留的第7天。结果表明，育种者的年龄和储存时间显着影响了重要的蛋品质性状和马歇尔肉鸡育种蛋的胚盘膨胀，尤其是来自较早育种者。