57

13A

13A

IRAN AGRICULTURAL RESEARCH

V.5

(1986)

P.21-30

Egg quality,Native chicken,Haugh unit,Shell color,Yolk index,Albumine height,Shell thicknen

Eggs were collected over a 15-day period from a flock of native Fars chickens kept on deep litter at the Animal research Station,College of Agriculture,Shiraz University,Iran.Albumen height,Haugh unit,Youlk index,shape index and shell thickness were determind,using published metods.The degree of translucent areas and the shell color were evaluated by subjective scoring.The number of eggs with blood spots was also recorded.Albumen height,Haugh unit and Yolk index averaged 5.82 mm,80.5 and 48.0, respectively.Mean shape index was 73.7 and the shell thickness was 0.37 mm.Mean score for translucent areas (1:no translucent area to 5:many translucent areas) and shell color (1:white to 5:brown) were 2.6and 1.9, respectively.About 7,of all eggs examined contained blood spots.regressions of the egg quality characteristics on the egg weight were calculated and the equations of best fit have presented.There were wide variations in the quality measures under investigation indicating the need for production of uniform eggs of high quality.

چ

76/05

Ghasemi

13A