Zai Xueying, Ma Xianyong, Weng Guangying, Song Min, Lu Yusheng, Yang Liyi, Deng Dun
College of Animal Science & Technology, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China.
State Key Laboratory of Livestock and Poultry Breeding, Key Laboratory of Animal Nutrition and Feed Science in South China, Ministry of Agriculture and Rural Affairs, Guangdong Provincial Key Laboratory of Animal Breeding and Nutrition, Guangdong Engineering Technology Research Center of Animal Meat quality and Safety Control and Evaluation, Institute of Animal Science, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China.
Foods. 2025 Feb 8;14(4):561. doi: 10.3390/foods14040561.
(Chinese name Baixiangguo, BXG) is a by-product with a high nutritional and economic value of Passiflora edulis Sims. In this study, corn was partly replaced with BXG to make feed for finishing pigs and the effects on the carcass traits, meat quality, muscle amino acid profile, and gene expression of finishing pigs were evaluated. A total of 20 healthy finishing pigs (Duroc × Landrace × Large) were randomly divided into two groups. The control group (CON) was fed the basal diet, and the experimental group (BXG) was fed a basal diet with BXG instead of 10% corn for a period of 43 d. Compared to the CON group, the carcass weight, intramuscular fat content, and marbling score were significantly increased, while the drip loss, b value, and shear force of the BXG group were significantly reduced ( < 0.05). Gene expression analysis showed that the mRNA expression of lipid synthesis and oxidative-type fiber related genes was significantly increased in the BXG group ( < 0.05). Proteomic research revealed that the metabolic pathways of the BXG and CON groups differed significantly. A total of 36 differentially expressed proteins were identified, mainly related to energy metabolism, fatty acid degradation, and endocrine regulation pathways. However, the contents of glutamine, glutamate, proline, and other amino acids in the BXG group were significantly reduced ( < 0.05). Overall, this study has a positive effect on improving meat quality, but the specific mechanism needs to be further explored, which offers practical guidance for the application of BXG in producing higher-quality pork and further promotes its commercial application.
（中文名百香果，BXG）是西番莲的一种具有高营养价值和经济价值的副产品。在本研究中，用百香果部分替代玉米来制作育肥猪饲料，并评估其对育肥猪胴体性状、肉质、肌肉氨基酸谱和基因表达的影响。总共20头健康的育肥猪（杜洛克×长白×大白）被随机分为两组。对照组（CON）饲喂基础日粮，实验组（BXG）饲喂用百香果替代10%玉米的基础日粮，为期43天。与CON组相比，BXG组的胴体重、肌内脂肪含量和大理石纹评分显著增加，而滴水损失、b值和剪切力显著降低（P<0.05）。基因表达分析表明，BXG组中脂质合成和氧化型纤维相关基因的mRNA表达显著增加（P<0.05）。蛋白质组学研究表明，BXG组和CON组的代谢途径存在显著差异。共鉴定出36种差异表达蛋白，主要与能量代谢、脂肪酸降解和内分泌调节途径有关。然而，BXG组中谷氨酰胺、谷氨酸、脯氨酸等氨基酸的含量显著降低（P<0.05）。总体而言，本研究对改善肉质有积极作用，但具体机制有待进一步探索，这为百香果在生产高品质猪肉中的应用提供了实践指导，并进一步促进其商业应用。
