Some physical and biochemical egg quality characteristics of Oravka breed
2002
Csuka, J. (Univerzita Konstantina Filozofa, Nitra (Slovak Republic)) | Benkova, J. | Baumgartner, J.
The Oravka is the youngest autochthonous breed of chickens, which behind other his advantages is a good layer in the winter season. The new knowledge about the composition of eggs cause the necessity to analyse the biochemical characteristics of Oravka breed egg quality, as it is realised in this papers, too. The eggs of Oravka breed originated from Poultry Research Station Ivanka pri Dunaji. At the age of 18 weeks, the chickens were selected and transported from deep litter to the cages. During rearing and reproduction period they were fed with standard mashes (from Hyd-07 to Hyd-11) completed by Plastin and Aquavit, during 5-7 days in a week. At the time of third months of egg production thirty standard eggs were collected and analysed for several parameters. The following averaged quantitative parameters were detected: egg weight 54.67 g, egg yolk weight 18.72 g, volume of egg yolk 16.98 ml, egg yolk refraction 1.4180, content of yolk very-low-density proteins 8.092 SH-units, total egg yolk cholesterol content 1486.2 mg per 100 g triacylglycerols of egg yolk 261.2 mg per g, volume of thin egg white 13.61 ml, refraction of thin egg white 1.3531, volume of thick egg white 13.61 ml and his refraction 1.3529. Between several egg characteristics, significant or highly significant phenotypic correlation were detected, namely the highest between the refraction of thin egg white and thick egg white
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