Fasting of male mink after mating and its influence on liver fat content and blood ketone bodies

Earlier investigations at pelting have shown that liver fat content is dependent on the feed used (Clausen & Sandbøl, 2005; Clausen et al., 2007b; Damgaard et al., 1998a; Damgaard et al., 1998b; Damgaard et al., 1994). Liver fat content also depends on how long before investigation the mink is fasted (Clausen & Sandbøl, 2005; Clausen et al., 2007a; Clausen, 1992; Bjørnvad et al., 2004; Mustonen et al., 2005). In cats, liver fat infiltration also increases with increasing fasting time (Biourge et al, 1994). Both in cats with IFHL (Idiopatisk Felin Hepatisk Lipidose) (Pazak et al, 1998) and in cats with fasting induced fat infiltration in the liver (Biourge et al, 1994) there is a high content of ketone bodies (β- hydroxybutyrate) in the blood. In mink there also seems to be a higher blood ketone concentration when the liver fat percent is high (Clausen et al., 2007a; Clausen & Sandbøl, 2005).
The purpose of this investigation was to evaluate whether fasting male mink in normal body condition right after mating, can provoke a fat infiltration in the liver, and whether there is a correlation between liver fat content and blood ketone bodies.