These differences in APD values could be due to the high ash content of green seaweed, which contain an average of 49 % compared to 32 % for brown seaweed and secondly to a lower content of NFE in green seaweed, which on average is 32 versus 50 % for brown seaweed.
the dry matter digestibility of feed ingredients consumed by L. vannamei tends to decrease as the fiber and ash content of the ingredients increases.