7DeRouchey J M.Comparison of spray-dried blood meal and blood cells in diets for nursery pigs[J].Animal Science,2002,80:2879 - 2886.
8Radecki S V,Jubland M R,Miller E R.Fumnanic and citric acids as feed additives in starter pig diets:Effect on perpormance and nutrient balance[J].Animal Science,1998,66:2598 - 2605.
9Siriwan P,Bryden W L,Gollah Y,et al.Measurement of endogenous amino acid losses in poultry[J].Br Poult Sci,1993,34:939 - 949.
