Research Article
Dietary Niacin Requirement of Juvenile Chinese Mitten Crab, Eriocheir sinensis
Figure 4
The intestine micromorphology of Eriocheir sinensis fed with different levels of niacin. (a) NF: number of folds; (b) HF: height of fold; (c) HMV: height of microvillus; (d) TM: thickness of muscularis. The values are the  (). Different letters indicate significant differences (). : ANOVA; : linear trend; : quadratic trend.
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