The Influence of Increasing Roughage Content in the Diet on the Growth Performance and Intestinal Flora of Jinwu and Duroc x Landrace x Yorkshire Pigs

文献类型： 外文期刊

第一作者： Xu, Gaili

作者： Xu, Gaili;Chen, Wenduo;Zhao, Ayong;Xu, Gaili;Chen, Wenduo;Zhao, Ayong;Huang, Jing;Pan, Jianzhi;Yu, Fuxian

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关键词： roughage diet; Jinwu pig; Duroc x Landrace x Yorkshire pig; roughage tolerance; gut microbiota

期刊名称：ANIMALS （ 影响因子：2.7； 五年影响因子：3.0 ）

ISSN： 2076-2615

年卷期： 2024 年 14 卷 13 期

页码：

收录情况： SCI

摘要： Simple Summary High-fiber unconventional feed, an alternative to conventional feed, is gaining attention as a breakthrough in alleviating the conflict between human and livestock food resources. Incorporating an appropriate amount of crude fiber into the diet can enhance the high-fiber tolerance of the pig gut microbiota, thereby improving the cellulose digesting ability, affecting pig growth performance and gut microbiota, and reducing livestock feed costs. However, there are differences in the tolerance and utilization efficiency of roughage feed among the different breeds. This study aimed to evaluate the changes in Jinwu pigs and Duroc pigs after feeding them diets with an increased roughage content. The results showed that while increasing the roughage content in the diet had a certain impact on the growth rate and feed conversion ratio, it could reduce feed costs and modify the gut microbiota structure. This preliminary study sheds light on the tolerance of Jinwu pigs to roughage and its underlying mechanisms, providing a scientific basis for optimizing feed formulations and improving pig growth performance.Abstract The Jinwu pig (JW) is a hybrid breed originating from the Chinese indigenous Jinhua pig and Duroc pig, boasting excellent meat quality and fast growth rates. This study aimed to verify the tolerance of JW to roughage, similar to most Chinese indigenous pigs. In this research, two types of feed were provided to JW and Duroc x Landrace x Yorkshire pigs (DLY): a basal diet and a roughage diet (increasing the rice bran and wheat bran content in the basal diet from 23% to 40%) for a 65-day experimental period. The roughage diet showed an increasing trend in the feed conversion ratio (F/G), with a 17.61% increase in feed consumption per unit weight gain for DLY, while the increase for JW was only 4.26%. A 16S rRNA sequencing analysis revealed that the roughage diet increased the relative abundance of beneficial bacteria, such as Lactobacillus and Clostridium, while reducing the relative abundance of some potential pathogens, thus improving the gut microbiota environment. After being fed with the roughage diet, the abundance of bacterial genera, such as Treponema, Terrisporobacter, Coprococcus, and Ruminococcaceae, which aid in the digestion and utilization of dietary fiber, were significantly higher in Jinwu compared to DLY, indicating that these bacterial genera confer Jinwu with a higher tolerance to roughage than DLY.

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