The total OLIG content in SBM is 12–15%, with sucrose (6–7%),
stachyose (5–6%) and raffinose (1–2%) being the primary OLIG present
(Francis et al., 2001; Russett, 2002). The effects of OLIG on fish have not
beenwell established. Kaushik et al. (1995) reported that rainbowtrout
fed a soy protein concentrate with less than 2% soluble carbohydrates
exhibited production characteristics similar to fish fed a fish meal
control,whereas trout fed a SBMdietwith 18% OLIG gained lessweight.
Extraction of OLIG from lupin meal and enzyme pre-treatment of OLIG
containing lupin meal increased the nutritional value of diets fed to
rainbow trout (Glencross et al., 2003). However, there have been no
formal evaluations of the constituent components of OLIG in diets fed to
trout. There have also been no formal evaluations of interactive effects of
ANF in salmonids, despite the fact that interactions have been identified
in other animals (Douglas et al., 1999).