Apparent digestibility of selected feedstuffs by mud crab, Scylla serrata
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A feeding experiment was conducted to determine apparent digestibility coefficients for dry matter (ADMD), crude protein (ACPD), crude fat (ACFD), crude fiber (ACFbD), nitrogen-free extract or NFE (ANFED), and crude ash (AAD) of selected feed ingredients for mud crab, Scylla serrata. The nine feed ingredients were Peruvian fish meal, squid meal, Acetes sp., meat and bone meal, copra meal, wheat flour, rice bran, corn meal, and defatted soybean meal. A reference diet (RF) and test diets (consisted of 70% RF diet and 30% of the feedstuff) were used with Cr2O3 as external indicator. The ADMD of the RF and test diets were high except for diet with meat and bone meal. Crude protein, crude fiber, and ash of feedstuffs were digestible in mud crab. Nutrients in squid meal, corn meal, and defatted soybean meal were digested well (ACFbD>95%; ANFED>92%; AAD>71%) compared with nutrients in the meat and bone meal. The AAD of copra meal, wheat flour, rice bran, and meat and bone meal were similar. The ACFD in carbohydrate-rich plant feedstuffs were significantly higher than that in protein-rich animal feedstuffs. For this species, the relative amounts of dietary protein and NFE in feedstuffs had an effect on the ACFD but not on ADMD.
Suggested CitationCatacutan, M. R., Eusebio, P. S., & Teshima, S. (2003). Apparent digestibility of selected feedstuffs by mud crab, Scylla serrata.
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