Ahammed, M, S Sharmin, A Khatun, and KMS Islam. 2018. “Supplementation of Spirulina (Spirulina Platensis) on Yolk Colour, Egg Quality and Production Performance of Laying Hens”. Bangladesh Veterinarian 34 (2), 71-78. https://doi.org/10.3329/bvet.v34i2.49890.