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Effects of breeder age on mineral contents and weight of yolk sac, embryo development, and hatchability in Pekin ducks
(Oxford Univ Press, 2014)
The current study was carried out to investigate the effects of breeder age on egg composition, changes of embryo, yolk sac, and yolk minerals during incubation and hatchability in Pekin ducks. A total of 495 freshly laid ...
Effect of spraying Pekin duck eggs obtained from different breeder age on hatchability
(Eugen Ulmer Gmbh Co, 2014)
The objective of this study was to determine the effect of spraying Pekin duck eggs obtained from different breeder age on hatchability. Hatching eggs used in this study were obtained from Pekin breeder flock. A total of ...
Body weight and body measurements of male and female Pekin ducks obtained from breeder flocks of different age
(Eugen Ulmer Gmbh Co, 2011)
In total, 144 Pekin ducklings (72 male and 72 female) obtained from breeder flocks of different ages (37 and 135 wks) were used to evaluate body weight and body measurements until 42 days of life. Ducklings were leg-banded ...