To measure the apparent digestibility of dry matter (DM) and crude protein (CP) of different ingredients for blue foxes, one hundred and twenty healthy male blue foxes in replacement period with similar body weight and age, were selected and randomly divided into 12 groups of 10 each. The ingredients with better palatability (trash fish, chicken carcasses, egg, beef, and chicken) were measured the digestibility of DM and CP in blue foxes by the method of feeding directly, while the ingredients with common palatability (bitterling, silver carp, chicken giblets, chicken liver, cow liver and yellow croaker) were measured by a difference method. The results showed that: 1) The apparent digestibility of DM in ingredients measured by the method of feeding directly had a significant difference （P<0.05）, however, the apparent digestibility of CP had no significant difference （P>0.05）, and the apparent digestibility of DM in trash fish, chicken carcasses, egg in the shell, beef and chicken were 84.39%, 87.24%, 61.14%, 94.64% and 88.12%, respectively; the apparent digestibility of CP in those feedstuffs were 94.60%, 91.19%, 91.24%, 97.25% and 96.69%, respectively. 2) The apparent digestibility of DM and CP in ingredients measured by the difference method had a significant difference （P<0.05）, and the apparent digestibility of DM in bitterling, silver carp, chicken giblets, cow liver, chicken liver and yellow croaker were 70.39%, 59.82%, 71.63%, 70.56%, 79.17% and 75.27%, respectively; the apparent digestibility of CP in those feedstuffs were 83.06%, 77.28%, 89.88%, 68.26%, 75.58%, 69.13% and 94.60%, respectively. In conclusion, blue foxes have good digestive ability to the experimental ingredients, and the trash fish, chicken carcasses, egg, beef, chicken, bitterling and chicken giblets are of high quality protein ingredients for blue foxes. Moreover, for silver carp, chicken liver, cow liver and yellow croaker, their proper supplemental proportions in diets of blue foxes depend on their palatability, nutrients digestibility and their influence on animal health.［Chinese Journal of Animal Nutrition, 2011, 23（9）：1519 -1526］
SUN Weili,LI Guangyu,LIU Fenghua,BAO Kun,ZHONG Wei,CHANG Zhongjuan,LIU Baiyang
. Apparent Digestibility of Dry Matter and Crude Protein of 11 Kinds of Fresh Ingredients in Blue Foxes[J]. Chinese Journal of Animal Nutrition, 2011
, 23(09)
: 1519
-1526
.
DOI: 10.3969/j.issn.1006-267x.2011.09.010
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