The proposed mechanisms by which probiotics decrease yolk cholesterol content include the ability of probiotics to produce bile salt hydrolase enzyme (BSH) (EC 3.5.1.24) for bile salt deconjugation in the enterohepatic circulation (Klaver and van der Meer 1993), the assimilation of cholesterol by probiotics to incorporate dietary cholesterol into their cellular membrane (St-Onge and others 2000), the retardation of cholesterol synthesis via the inhibition of hydroxymethylglutaryl coenzyme A (HMG CoA) reductase (Fukushima and Nakano 1995), and the conversion of cholesterol by probiotics in the intestine into coprostanol, which is directly excreted with the feces (Ooi and Liong 2010). The postulated mechanisms by which prebiotics decrease yolk cholesterol might be attributed to the production of short-chain fatty acids (SCFA), upon fermentation by the probiotic organisms (Hara and others 1999) and the deconjugation and fecal excretion of bile acids due to the stimulation of growth of probiotics that occurs because prebiotics are the food sources of probiotics (Shang and others2010), SCFA has been proposed to be able to suppress hepatic cholesterol synthesis (Hara and others 1999) and to stimulate bile acid synthesis (Imaizumi and others 1992).