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A Multi-Enzyme Complex That Mitigates Hepatotoxicity, Improves Egg Production and Quality, and Enhances Gut and Liver Health in Laying Hens Exposed to Trace Aflatoxin B1

文献类型： 外文期刊

作者： Chen, Zhuo 1 ; Chen, Rui 2 ; Ma, Xin 1 ; Wu, Wenzi 2 ; Huang, Qixin 1 ; Ye, Wenxin 2 ; Wu, Chulong 2 ; Yao, Bin 3 ; Xu, Jianhong 4 ; Qian, Lichun 1 ;

作者机构： 1.Zhejiang Univ, Coll Anim Sci, Key Lab Anim Nutr & Feed Sci East China, Minist Agr, Hangzhou 310058, Peoples R China

2.Zhejiang Univ, Hainan Inst, Sanya 572025, Peoples R China

3.Chinese Acad Agr Sci, Inst Anim Sci, State Key Lab Anim Nutr, 2 West Yuanmingyuan Rd, Beijing 100193, Peoples R China

4.Jiangsu Acad Agr Sci, Inst Food Safety & Nutr, Nanjing 210014, Peoples R China

关键词： AFB1; production; liver damage; gut health; gut microbiota; liver metabolites

期刊名称：TOXINS （ 影响因子：4.0； 五年影响因子：4.5 ）

ISSN：

年卷期： 2024 年 16 卷 12 期

页码：

收录情况： SCI

摘要： Aflatoxin B1 is a prevalent secondary hazardous metabolite generated by fungus present in feed ingredients and the surrounding environment: enzymes are currently being recognized as an efficient and promising approach to reducing the associated risks. The objective of this study was to assess the effects of varying doses of enzyme complexes on several parameters in laying hens that were exposed to aflatoxin. During an 8-week experiment, a total of 288 Yukou Jingfen No.6 laying hens were placed into four groups. These groups included a group treated with toxins (CON group) and groups supplemented with compound enzyme complexes at doses of 250 g/t (E1 group), 500 g/t (E2 group), and 1000 g/t (E3 group). The E2 and E3 groups exhibited a statistically significant 2.6% increase in egg production rate compared to the CON group (p < 0.05). In addition, the E2 group showed significant improvements in both the feed-to-egg ratio and egg weight (p < 0.05). In addition, the E2 and E3 groups showed improved hutch unit and egg white height compared to the control group (p < 0.05). The E2 and E3 groups showed a substantial rise in liver health indicators, namely serum alanine transaminase (ALT) and alkaline phosphatase (ALP) activity. On the other hand, malondialdehyde (MDA) was lowered, and total superoxide dismutase (T-SOD) and total antioxidant capacity (T-AOC) were raised. These findings were statistically significant (p < 0.05). The E2 and E3 groups showed notable enhancements in intestinal morphology, as evidenced by a rise in villus height and a decrease in crypt depth in all segments of the intestine (p < 0.05). Furthermore, analysis of 16S rRNA sequencing revealed that these participants had a higher prevalence and variety of microorganisms in their gut microbiota. More precisely, there was a significant rise in the abundance of Bacteroidota and a decline in Firmicutes at the level of the phylum. In general, the inclusion of the enzyme complex had advantageous impacts on performance, egg quality, intestinal morphology, intestinal barrier function, and intestinal flora in laying hens. Our results indicate that toxin-degrading enzymes, when used as feed additives, play a significant role in mitigating AFB1 contamination in diets and improving the production performance of laying hens.

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