“…A number of researchers have evaluated performance and meat quality of broilers given plant extracts (Akbarian et al, 2013;Sharifi et al, 2013;Cho et al, 2014;Park et al, 2014;Starčević et al, 2015) and OEO (Hong et al, 2012;Khattak et al, 2014;Kırkpınar et al, 2014;Küçükyılmaz et al, 2014;Ghazi et al, 2015;Silva-Vázquez et al, 2015;Sun et al, 2015;Ghazanfari et al, 2015;Hashemipour et al, 2016;Peng et al, 2016;Reyer et al 2017;Chowdhury et al, 2018), demonstrating their influence on feed intake, growth enhancement, blood parameters, and meat quality. Silva-Vazquez et al (2017) indicated that Greek (Origanum vulgare L. ssp.…”