Comparative analysis of fatty acid profile and cholesterol content in table eggs from different genotype hens
2011
Pavlovski, Z., Institute for Animal Husbandry, Belgrade - Zemun (Serbia) | Škrbić, Z., Institute for Animal Husbandry, Belgrade - Zemun (Serbia) | Lukić, M., Institute for Animal Husbandry, Belgrade - Zemun (Serbia) | Lilić, S., Institute of Meat Hygiene and Technology, Belgrade (Serbia) | Krnjaja, V., Institute for Animal Husbandry, Belgrade - Zemun (Serbia) | Stanišić, N., Institute for Animal Husbandry, Belgrade - Zemun (Serbia) | Petričević, V., Institute for Animal Husbandry, Belgrade - Zemun (Serbia)
Alternative (non-conventional) poultry housing systems are introduced into production, on the one hand for the benefit of poultry welfare and, on the other hand because of the quality of eggs, i.e. the association/correlation between quality of life of hens and quality of product is established. Data obtained in the comparative analysis for proximate composition, fatty acid profile and cholesterol content of whole egg of genotype (Hy line and Naked N) housed in different systems (cage and free range) are presented in this study. Eggs from Naked Neck hens reared in free range system had statistically significantly higher content of dry matter, fat, protein and ash compared to genotype Hy line housed in both systems. Eggs obtained from genotype Hy line hens reared in free range system, in comparison to cage system, had higher content of dry matter, fat and ash, although the differences were not statistically significant, whereas the difference in the protein/albumen content in Hy line hens housed in cages compared to free range was statistically significant. Significantly lower content of n-6 fatty acids was established in eggs from Naked Neck hens (13.32) compared to eggs obtained from Hy-line hens housed on free range (17.46) and Hy-line hens housed in cage system (18.02). Content of toxic elements (Cd is less than 0.001 mg/kg; Pb is less than 0.05 mg/kg; As is less than 0.01 mg/kg; Hg is less than 0.005 mg/kg) in all three groups of eggs was in compliance with standards stipulated in the Article 9a, Annex 5, Rulebook on maximum residue limits for plant protective compounds in food and feed for which maximum reside limits are established.
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