Evaluation of Moringa oleifera leaf in laying hens: effects on laying performance, egg quality, plasma biochemistry and organ histopathological indices
Wei Lu | J. Wang | H. J. Zhang | S. G. Wu | G. H. Qi
This experiment was conducted to evaluate the effects of supplementary Moringa oleifera leaf (MOL) on performance, egg quality, plasma parameters and organ histopathological indices of layers. A total of 360 27-week-old Hy-Line Grey commercial layers were randomly allotted to four groups. Each group consisted of six replicates with 15 birds and 3 birds were placed in one cage. The control group was fed a corn-soybean meal based diet and the experimental groups were fed on control diet supplemented with 5%, 10% or 15% MOL (MOL5, MOL10 and MOL15 group). The experiment lasted for 8 weeks. No significant differences were observed in egg weight or feed intake among all groups (p > .05). The birds in MOL15 group had higher feed conversation ratio and lower egg production compared with those in control group (p < .05). Layers in MOL5 had a deeper yolk colour than those in control group (p < .05). The albumen height and Haugh unit increased with increasing level of MOL when eggs were stored at 4 °C and 28 °C for 4 weeks (p < .05). Layers in MOL15 group had higher aspartate aminotransferase activity and lower uric acid concentration than other groups (p < .05). Layers in MOL10 and MOL15 groups had higher malondialdehyde content than those in control group (p < .05). Supplementary MOL increased the activity of glutathione peroxidase (p < .05). In conclusion, dietary supplementation with 5% MOL could improve yolk colour value and protein absorption without adverse effects on laying performance and egg quality.
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