Fig. 2

Fat deposition in Pekin ducks in Met-deficient and Met-adequate groups. a Hematoxylin and Eosin (H&E) staining of liver and abdominal fat. Photomicrographs are shown at 400× and 200× for liver and for abdominal fat, respectively. b The average number, diameter, and area of adipocytes in abdominal fat. Results are presented as means with plus error bars (standard deviation). Differences were assessed by Student’s t test (n = 6) and denoted as follows: *** P < 0.001, **** P < 0.0001. Met-D, Met-deficient; Met-A, Met-adequate