Akter, F., Howlader, M., Hossain, M., Hasan, M., Islam, S. and Begum, S. 2016. Effects of commercial layer feed supplementation on haematological and reproductive parameters of indigenous duck in rural area. International Journal of Natural Sciences. 5, 1 (Jul. 2016), 35–40. DOI:https://doi.org/10.3329/ijns.v5i1.28609.