“…On the other hand, several studies have been conducted to estimate concentrations of PCDD/Fs and DL-PCBs in poultry, beef and pork, based on exposure through dietary intake (Thorpe et al 2001, Hoogenboom et al 2004, Spitaler et al 2005, Guruge et al 2005, van Eijkeren et al 2006, Brambilla et al 2008. Samsing et al (2011) have developed a model to estimate the individual contributions of the raw materials that are used in intensive pig farming in Chile as potential sources of contamination, taking into consideration dietary variations during breeding, raising and fattening.…”