Effect of feed supplementation with a thymol plus carvacrol mixture, in combination or not with an NSP-degrading enzyme, on productive and physiological parameters of broilers fed on wheat-based diets

Effects of two sources of Mexican oregano oil on performance, blood profile, carcass variables, and meat of broilers

“…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.…”

Performance, blood parameters, and carcass yield of broiler chickens supplemented with Mexican oregano oil

“…Similar effects were found by Cho et al (2014) when phytogenic additives were included in the diet of chickens. Other studies showed improvements in BW at 21 and 42 days when the chickens were fed peppermint, thyme leaves, and thymol with cinnamaldehyde or carvacrol (Ocak et al, 2008;Tiihonen et al, 2010;Mohiti-Asli and Ghanaatparast-Rashti, 2015;Hashemipour et al, 2016). In the present study, feed intake was different at days 21 and 1-42 (P<0.01), as well as at 28 and 35 days (P<0.05), in which the oxytetracycline treatment group consumed less feed, followed by MOO treatment group, while control group had the highest FI throughout the study (1-42 days) ( Table 2).…”

“…However, the European Union has banned antibiotic use in animal feed production out of concerns for bacterial resistance and hazards to public health (Hong et al, 2012). The ban has prompted researchers to study natural additives for growth promoter, antibiotic, and antioxidant properties in animal production (Adil et al, 2011;Hong et al, 2012;Cho et al, 2014;Park et al, 2014;Mohiti-Asli and Ghanaatparast-Rashti, 2015;Hashemipour et al, 2016). Hippenstiel et al (2011) stated that oregano essential oil (OEO) has antimicrobial and antioxidant properties and stimulate the secretion of digestive enzymes.…”

“…Oil extracts of Origanum vulgare L. tested in broiler diets improve body weight and feed intake at 1,000 ppm (Bozkurt et al, 2009), 500 ppm (MohitiAsli and Ghanaatparast-Rashti, 2015), 100 and 250 ppm (Symeon et al, 2009), 150 and 300 ppm (Kırkpınar et al, 2011), while 200 ppm of thymol and carvacrol (Lee et al, 2003;Hassanpour et al, 2013;Silva Vázquez et al, 2015;Hashemipour et al, 2016) Park et al, 2014;Mohiti-Asli and Ghanaatparast-Rashti, 2015;Hashemipour et al, 2016). Moreover, little attention has been given to Mexican oregano oil (MOO), prepared from Lippia berlandieri Schauer, in broiler production, and its use in broilers in Mexico and other countries has not been documented extensively.…”

“…The main active components of OEO are thymol and carvacrol, which can improve feed digestibility, due to positive effects on nutrient digestibility (Jamroz et al, 2005), and induce a higher secretion of bile acids (Hashemipour et al, 2016). Oil extracts of Origanum vulgare L. tested in broiler diets improve body weight and feed intake at 1,000 ppm (Bozkurt et al, 2009), 500 ppm (MohitiAsli and Ghanaatparast-Rashti, 2015), 100 and 250 ppm (Symeon et al, 2009), 150 and 300 ppm (Kırkpınar et al, 2011), while 200 ppm of thymol and carvacrol (Lee et al, 2003;Hassanpour et al, 2013;Silva Vázquez et al, 2015;Hashemipour et al, 2016) Park et al, 2014;Mohiti-Asli and Ghanaatparast-Rashti, 2015;Hashemipour et al, 2016).…”