“…Studies also report other methods for hatching egg disinfection, including ultraviolet light (Coufal et al, 2003;Al-Shammari et al, 2015), electrolyzed oxidizing water (Russell, 2003;Bialka et al, 2004;Keita et al, 2016), application of low and high frequency ultrasound (Yildirimet al, 2015;Al-Shammari et al, 2015), ozone (Hrcncar et al, 2012), and glutaraldehyde surfactant solution (Proudfoot et al, 1985). Natural products have been tested as alternatives to the use of formaldehyde, such as etheric thyme oil (Origanum vulgare), which has antimicrobial properties (Yildirim et al, 2003;Baydar et al, 2004;Copur et al, 2010;Debes & Basyony, 2011), propolis (Aygun et al, 2013) and allicin (Copur et al, 2011).…”