Evaluation of physical traits and morphological composition of Peking duck eggs from P44 reserve flock
2007
Kokoszynski, D. | Korytkowska, H. | Korytkowski, B.,Uniwersytet Technologiczno-Przyrodniczy, Bydgoszcz (Poland). Katedra Hodowli Drobiu
Research was conducted on Peking duck eggs from the reserve flock 44. Egg quality evaluation was carried out in the 28th, 36th and 44th week of ducks life, in other words in the 5th, 13th and 21st reproduction week. At each date 30 eggs were evaluated, 90 eggs in total, always 24 hours from laying. With the ducks age the following vales have increased: egg weight (from 77.8 to 86.8 g), egg length (from 63.5 to 64.8 mm), egg width (from 46.4 to 48.9 mm) and the shell surface (from 86.3 to 92.8 square cm). The egg shape became slightly rounder and its shell colour darkened. Egg albumen content has decresed from 60.4 to 57.1 percent, while yolk content has increased - from 29.7 to 33.1 percent. Both the quality of thick albumen, determined by Haugh units, and the quality of yolk, described by its diameter, have deteriorated
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