The effect of breederʼs strain (Hy-line Brown and Hy-line White W36) flock aged (28, 36, 46, 55, 66 weeks of age) and breeding season on some physiological measurements in egg, demand organs, dead supply organs and lymphoid organs were examined. At each age, 10 unhatched eggs from each genotype were examined on embryo weight percentage, Chorioallotoic weight , albumen pH , yolk pH , residual yolk , pectoral muscles weight , hatch muscles weight , heart, liver, lunges, spleen, burse weight percentage. There was a significant difference between layer breeder genotypes for lunges weight percentage the brown was higher (0.84) than the white (0.62). The breeding season had a significant effect on heart, liver, lunges weight percentages in winter higher than summer but yolk pH and residual yolk the summer higher than the winter. Breeder's age significant effect on embryo weight percentage, Chorioallotoic weight , albumen pH , yolk pH, residual yolk , hatch muscles weight heart, liver, lunges and burse weight percentage. It could be observed that the genetic differences among layer breeder strain and age of breeders can affect the hatchery performance. Additionally, handling of hatching eggs and incubation management can play a major role to overcome numerous hatching problems. In turn, increasing the production of table eggs and achieves the balance between supply and demand of that strategic commodity in Egyptian market.
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机译：研究了种猪品系（Hy-line Brown 和 Hy-line White W36）龄（28、36、46、55、66 周龄）鸡群和繁殖季节对鸡蛋、需求器官、死亡供应器官和淋巴器官部分生理测量的影响。在每个年龄，对来自每种基因型的 10 个未孵化卵进行胚胎重量百分比、绒毛膜同种异体重量、蛋白 pH 值、蛋黄 pH 值、残余卵黄、胸肌重量、孵化肌肉重量、心脏、肝脏、弓步、脾脏、车囊重量百分比。蛋鸡种鸽基因型在弓步体重百分比方面存在显著差异，棕色（0.84）高于白色（0.62）。繁殖季节对心脏、肝脏、弓步体重百分比有显著影响，冬季高于夏季，但卵黄pH值和残余卵黄在夏季高于冬季。种鸡的年龄对胚胎重量百分比、绒毛膜同种异体重量、蛋白 pH 值、蛋黄 pH 值、残余卵黄、孵化肌肉重量百分比、心脏、肝脏、弓步和滑囊重量百分比有显着影响。可以看出，蛋鸡种系和种鸡年龄之间的遗传差异会影响孵化场的性能。此外，孵化蛋的处理和孵化管理可以在克服许多孵化问题方面发挥重要作用。反过来，增加食用鸡蛋的产量，并在埃及市场实现该战略商品的供需平衡。
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