The Effect Of Age Of Bird On Shell Quality And Component Yield Of Eggs

Abstract

The effect or age of birds on shell quality and yield components of egg was studied. The birds' age were 25, 30, 58 or. 78 weeks. The eggs' weight increased by 9.92%, 26.43% and 31.46% for birds at 30, 58 and 78 weeks,
respectively. While the shell weight was found to increase by 15.10, 34.55 and 30.44% for birds at 30, 58 and 78 weeks, respectively. The yolk and albumen weights were found to increase by 4.05%, 11.39%, 44.72%, 18.06% and 44.72%, 26.41%. for hens .at 30, 58 and 78 week.s old respectively. The yolk: albumen ratio was highest (0.478 ±0.12) with eggs laid by 58 weeks old birds. Albumen pH decreased with increase in the age of birds.

Keywords: Shell quality, component yield of egg