Kubiƛ, M., Lewko, L., Kaczmarek, S. A., Nowaczewski, S., & Andrzej Rutkowski, M. H. (2019, May 17). The effect of enzyme and protein source on laying hens performance, eggshell and bone traits. Emirates Journal of Food and Agriculture, 31(5), 353-360. https://doi.org/https://doi.org/10.9755/ejfa.2019.v31.i5.1953