References
- Cherian, G., Holsonbake, T. B., Goeger, M. P., 2002, Fatty acid content and egg components of specialty eggs, Poult. Sci., 81, 30-33. https://doi.org/10.1093/ps/81.1.30
- Folch, J., Lees, M., Sloane-Stanletys, G. H., 1957, A simple method for isolation and purification of total lipids from animal tissues, J. Bio. Chem., 226, 497-507.
- Food and Agriculture Organisation of United States, 2009, FAO, FaoStat, Livestock primary, Available on the Internet, Cited 01.03.2009, http://www.fao.org.
- Hidalgo, A., Rossi, M., Clerici, F., Ratti, S., 2008, A market study on the quality characteristics of eggs from different housing systems, Food Chem., 106, 1031-1038. https://doi.org/10.1016/j.foodchem.2007.07.019
- Huopalahti, R., Lopez-F, R., Anton, M., Schade, R., 2007, Bioactive egg compounds, Springer-Verlag, Heidelberg, 298.
- Jones, S. D., Ma, W., Robinson, F. E., Field, C. J., Clandinin, M. T., 2000, Isomer of conjugated linoleic acid (CLA) are incorporated into egg yolk lipids by CLA-fed laying hens, J. Nutr., 130, 2002-2005. https://doi.org/10.1093/jn/130.8.2002
- Kim, G. H., Park, B. S., 2006, Effects of dietary fats on the changes of egg lipid composition in laying hens, Ann. Anim Resour. Sci., 17, 1-9.
- Kim, H. J., Yoo, J. S., Shin, S. O., Cho, J. H., Chen, Y. J., Huang, Y., Kim, Y. J., Whang, K. Y., Yang, M. S., Kim, D. J., Kim, I. H., 2008, Effects of dietary conjugated linoleic acid (CLA) and oil containing unsaturated fatty acid supplementation on egg production rate and quality in laying hens, Korean J. Poult. Sci., 35, 131-136. https://doi.org/10.5536/KJPS.2008.35.2.131
- Korean Poultry Association, 2012, Supply and demand statistics for livestock products, http://www.poultry.or.kr.
- Lee, K. N., Storkson, J. M., Pariza, M. W., 1995, Dietary conjugated linoleic acid changes fatty acid composition in different tissues by decreasing monounsaturated fatty acids, p.183, In: IFT Annual Meeting Book of Abstracts, Anaheim, CA.
-
Lopez-Bote, C. J. R., Sanz Arias, R., Rey, A. I., Castano, A., Isabel, B., Thos, J., 1998, Effect of free-range feeding on omega-3 fatty acid and
$\alpha$ -tocopherol content and oxidative stability of eggs, Anim. Feed Sci. Technol., 72, 33-40. https://doi.org/10.1016/S0377-8401(97)00180-6 - Matt, D., Veromann, E., Luik, A., 2009, Effect of housing systems on biochemical composition of chicken eggs, Agro Res (Special issue II), 7, 662-667.
- Minelli, G., Sirri, F., Folegatti, E., Meluzzi, A., Franchini, A., 2007, Egg quality traits of laying hens reared in organic and conventional systems, Ital. J. Anim. Sci., 6, 728-730.
- SAS Institute, 2000, SAS User's guide: Statistics, Version 8 edition SAS Institute Inc., Cary, NC, USA.
- Ternes, W., Leitsch, S., 1997, Chemistry of egg yolk. In: Proceedings of the VII European Symposium on the Quality of Eggs and Egg Products. Poznan, Poland. WPSA Polish branch, Poznan, Poland, 127-144.