Fig. 1

Phenotype observation of laying hens with FLS. A Body weight, liver weight and liver index of hens. B Hepatic morphological analysis as well as TG and TC detection (magnification:10 × 20). C Determinations of serum biochemical parameters. All data are expressed as mean ± SEM (n = 7). The asterisks on the bars are statistically significant (* means P < 0.05 and ** means P < 0.01)