The influence of genotype and age of hens on the egg shell quality
2008
Rajicic, V., Centar za strna zita d.o.o, Kragujevac (Serbia) | Mitrovic, S., Poljoprivredni fakultet, Beograd - Zemun (Serbia) | Tolimir, N., Institut za primenu nauke u poljoprivredi, Beograd (Serbia) | Peric, L., Poljoprivredni fakultet, Novi Sad (Serbia)
In this paper the results of examination of eggs quality in two light line hybrids of chickens (Hisex Brown and Shaver 579) are presented. At the end of every four-week period an examination of external and internal qualities of eggs was carried out. For every egg we examined following external quality traits: colour, deformation and cleanliness of egg shell. From internal qualities we measured mass of raw shell and thickness of egg shell. Concerning external qualities of eggs, the layers of Hisex Brown had somewhat darker colour of egg shell. The layers of Shaver 579 has somewhat bigger deformation of egg shell and clearer egg shell. The chickens of provenience Shaver 579 had better internal qualities of eggs, as well as mass of raw shell and thickness of egg shell. High degree of correspondence and statistically very significant correlation was found between age and mass of an egg shell and age and thickness of egg shell in Shaver 579. Generally, the both examined hybrids gave satisfying results of external and internal qualities of eggs. For most of monitored qualities we determined strong or middle strong correlation dependence between age and examined qualities.
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