Arshami, J., et al. “Effects of Long-Term Feeding Flaxseed on Growth and Carcass Parameters, Ovarian Morphology and Egg Production of Pullets”. International Journal of Poultry Science, vol. 9, no. 1, Dec. 2009, pp. 82–87, https://doi.org/10.3923/ijps.2010.82.87.