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  • Title: Effects of feeding diets with processed Moringa oleifera stem meal on growth and laying performance, and immunological and antioxidant activities in laying ducks.
    Author: Yang SL, Yang RC, Zhou X, Yang SH, Luo LL, Zhu YC, Boonanuntan S.
    Journal: Poult Sci; 2020 Jul; 99(7):3445-3451. PubMed ID: 32616238.
    Abstract:
    This study was conducted to determine the effect of Moringa oleifera stem (MOS) meal in ducks. A total of 225 ducklings at 1 D of age were randomly assigned to 3 dietary treatment groups with 3 replicates of 25 each. The growth experiment lasted 63 D . The egg experiment started from 23 to 27 wk of age. Ducks were randomly divided into 3 treatment groups with 3 replications of 15 each. The following dietary treatments were applied: 1) Control (CON), basal diet + 0% MOS meal; 2) basal diet + 2% MOS meal; 3) basal diet + 4% MOS meal. During 0 to 4 wk of age, ducks fed 2% MOS diet showed significantly increase in average daily feed intake (ADFI) and average daily gain (ADG; P < 0.05) and ducks fed 4% MOS diet had a significant improvement in feed conversion rate (FCR; P < 0.05). However, ADFI, ADG, and FCR were not affected significantly during 5 to 9 wk of age (P > 0.05). In egg production experiment, ADFI, average egg weight, laying rate, and FCR showed significant increase in 4% MOS diets (P < 0.05). Laying ducks fed 4% MOS diet had a higher egg shape index, whereas a lower yolk color compared with CON (P < 0.05). The proportion of broken shell eggs were zero in experimental diets, whereas 3% of which occurred in CON (P < 0.05). However, no significant effects in proportion of soft shell eggs, proportion of abnormal-shape eggs, albumen height, haugh unit, and eggshell thickness were observed among all treatments (P > 0.05). For serum biochemical parameters, total protein and albumin were increased in MOS diets during 0 to 4 wk of age, but decreased during 5 to 9 wk of age. For serum antioxidant index, superoxide dismutase and glutathione peroxidase values were increased whereas malondialdehyde values were decreased in MOS diets from 0 to 9 wk of age. The results suggest that MOS positively affects early growth performance and laying performane of duckling but partially affects egg quality. The antioxidative activity and immunological index may be improved.
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