Determination of The Egg Quality Characteristics with Mathematical Formulas in Pekin Ducks Grown in Public Farms

Abstract

This study was carried out with the aim of determining some internal and external quality characteristics of pekin duck eggs grown by families living in rural Hatay province by using mathematical formulas. In the study, 417 pekin duck eggs were used and with the help of mathematical formulas based on individual egg weight values, egg length and width, egg surface area, egg shell weight and thickness, pore number, egg yolk ratio values were calculated. Average egg length calculated according to egg weight were determined as 62,48 mm, egg width 43.76 mm, egg shell thickness 0.358 mm, egg shell weight 6.03 g, egg surface area 81.23 cm2, pore number-1 8.915.29, pore number-2 7.993.13 and pore number-3 8.934.70 units and egg yolk ratio 37.68%. In addition, shape index of egg external quality characteristics 69.69%, elongasyon 1.436, egg volume 66.38 cm3, pore density-1 109.89, pore density-2 98.34, pore density-3 109.74 pore number/cm2 and egg shell ratio 8.48%, the yolk weight of egg internal quality characteristics 26.78 g, albumen weight 38.26 and albumen ratio were calculated as 53.85%. As a result, the characteristics of the external and internal quality of the pekin duck eggs raised at the public hand within the Hatay province were revealed without deteriorating the egg integrity.