Effects of Dietary Level of Corn Bran on Laying Performance and Cecum Microbial Communities in Laying Ducks
文献类型: 外文期刊
作者: Hou, Jia 1 ; Zeng, Qiufeng 1 ; Ding, Xuemei 1 ; Bai, Shiping 1 ; Wang, Jianping 1 ; Peng, Huanwei 1 ; Lv, Li 1 ; Xuan, Yue 1 ; Zeng, Tao 2 ; Tian, Yong 2 ; Lu, Lizhi 2 ; Zhang, Keying 1 ;
作者机构: 1.Sichuan Agr Univ, Minist Educ, Key Lab Anim Dis Resistance Nutr, Anim Nutr Inst, 211 Huimin Rd, Chengdu 611130, Sichuan, Peoples R China
2.Zhejiang Acad Agr Sci, Inst Anim Husb & Vet Sci, Hangzhou 310021, Peoples R China
关键词: corn bran; laying duck; laying performance; microbial communities
期刊名称:ANIMALS ( 影响因子:3.0; 五年影响因子:3.2 )
ISSN: 2076-2615
年卷期: 2023 年 13 卷 23 期
页码:
收录情况: SCI
摘要: Simple Summary: Increasing numbers of livestock and aquaculture are resulting in insufficient feed. As a result, the use of unconventional raw materials is receiving increased attention. Corn bran (CB) is a by-product of corn starch production, which is high in yield and dietary fiber but low in price. Whether CB can be used in laying ducks' diet and its maximum level remain unknown. In this study, the highest dietary CB level was set at 12%, which is double its maximum level in the laying duck industry. The results showed that the inclusion of 3%, 6%, 9%, and 12% CB in laying ducks' diet under iso-energy and iso-nitrogen conditions had no adverse impacts on laying performance. Feeding ducks a 12% CB diet also improved digestive organ development, cecal beneficial bacterium population and beneficial metabolite production, albumen height, Haugh unit, and yolk color of eggs. The data suggested that the level of CB can reach up to 12% in a laying duck diet under iso-energy and iso-nitrogen conditions. The application of corn bran (CB) to laying ducks via iso-energy and iso-nitrogen diets is rarely reported. Six hundred laying ducks (49 weeks) were equally assigned to five treatments: the control group with 0% CB and the other four groups with 3%, 6%, 9%, and 12% CB. The experiment lasted for 11 weeks. With the increase in CB, the relative weight of the proventriculus, gizzard, and ileum and the content and proportion of butyric acid in the cecal digesta were quadratically changed (p < 0.05), and the highest value was observed in the 12% CB group. Compared with the control, the 12% CB group showed decreased Deferribacteres, Spirochaetota, and Fusobacteriota at the phyla level and showed increased Pediococcus and decreased Bifidobacterium and Rikenellaceae_RC9_gut_group at the genus level (p < 0.10); the 12% CB group also showed 46 different metabolites, which are related to Lactobacillus and Pediococcus (p < 0.05). The 12% CB group showed increased (p < 0.05) albumen height at week 8 and yolk color at weeks 4 and 8 compared with the control. Overall, dietary inclusion of 3% to 12% CB is a possible feeding strategy for laying ducks under iso-energy and iso-nitrogen conditions, and the 12% CB group was more effective.
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