Eyng, C., Murakami, A. E., Pedroso, R. B., Silveira, T. G. V., Lourenço, D. A. L., & Garcia, A. F. Q. M. (2013). Crude propolis as an immunostimulating agent in broiler feed during the first stage. Semina: Ciências Agrárias, 34(5), 2511–2522. https://doi.org/10.5433/1679-0359.2013v34n5p2511