Al-Nasser , A. Y.; Al-Saffar, A. E.; Abdullah, F. K.; Al-Bahouh, M. E.; Ragheb, G.; Mashaly, M. M. Effect of Adding Flaxseed in the Diet of Laying Hens on Both Production of Omega-3 Enriched Eggs and on Production Performance. Int. J. Poult. Sci. 2011, 10 (10), 825–831. https://doi.org/10.3923/ijps.2011.825.831.