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. 2022 May 19;10:249–260. doi: 10.1016/j.aninu.2022.05.001

Table 2.

Effects of dietary cholesterol level on growth, molting performance and feed utilization (%, wet weight) of juvenile swimming crabs (Portunus trituberculatus)1.

Item Dietary cholesterol level, %
0.12 0.43 0.79 1.00 1.30 2.50
IBW, g 1.47 ± 0.04 1.34 ± 0.05 1.41 ± 0.07 1.43 ± 0.07 1.42 ± 0.06 1.47 ± 0.08
FBW, g 27.56 ± 1.08b 29.58 ± 2.25ab 30.44 ± 1.62ab 35.34 ± 1.50a 34.46 ± 1.44a 34.2 ± 0.16a
PWG2, % 1,790.06 ± 51.68b 1,867.91 ± 120.10b 2,185.29 ± 89.41ab 2,482.33 ± 123.01a 2,406.82 ± 85.17a 2,374.32 ± 101.49a
SGR3, %/day 5.24 ± 0.04c 5.30 ± 0.08c 5.51 ± 0.08bc 5.80 ± 0.07a 5.76 ± 0.06ab 5.72 ± 0.06ab
FCR4 1.28 ± 0.06a 1.26 ± 0.07ab 1.23 ± 0.06ab 1.18 ± 0.05ab 1.06 ± 0.06ab 1.03 ± 0.05b
Survival5, % 90.63 ± 4.57 90.63 ± 4.57 87.5 ± 4.72 89.29 ± 4.34 96.88 ± 3.12 87.5 ± 4.72
MR6 3.60 ± 0.05c 3.64 ± 0.04c 3.69 ± 0.03bc 4.00 ± 0.08a 3.88 ± 0.05ab 3.79 ± 0.03bc

IBW = initial body weight; FBW = final body weight; PWG = percent weight gain; SGR = specific growth ratio; FCR = feed conversion ration; MR = molting ratio.

a,b,c Different letters in the same line show a significant difference between treatments (P < 0.05).

1

Data are expressed as mean and SEM (n = 4).

2

PWG (%) = 100 × (FBW - IBW)/IBW.

3

SGR (%/day) = 100 × (ln FBW - ln IBW)/culturing days.

4

FCR = feed intake/(FBW - IBW + dead crabs' weight).

5

Survival (%) = 100 × final crabs' number/initial crabs' number.

6

Molting ratio (MR) = 2 × the number of molting/(final crabs' number + initial crabs' number).