补充 metionin 影响 便 细菌 社区 和 生产 性能 在 Sika 鹿 (Cervus nippon)
Yan Wu1,2, Yongzhen Zhu1, Xiaolan Guo1,2
1Innovation Center for Feeding and Utilization of Special Animals in Jilin Province, Institute of Special Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, Changchun 130000, China.
Animals : an open access journal from MDPI
|August 26, 2023
概括
在Sika鹿的饮食中补充 metionin,通过增加营养消化能力和蛋白质含量,改善了料利用率和角质量. 它还改变了肠道细菌的组成,有利于整体动物健康,减少了对环境的影响.
科学领域:
- 动物营养 动物营养
- 动物生理学 动物生理学
- 微生物组研究 微生物组研究
背景情况:
- 氨基酸平衡对于料蛋白的利用和减少农业造成的环境污染至关重要.
- 补充限制性氨基酸可以提高动物的营养物质利用率和性能.
- 氨酸是一种必需的氨基酸,对动物的新陈代谢和健康有重大影响.
研究的目的:
- 为了研究食中补充 metionin 对营养消化能力,角质量和角质生长的西卡鹿的肠道微生物群的影响.
- 确定最佳的氨酸水平,以提高料的效率和角的发展.
- 了解 metionin 对乳头和肠道微生物群落的影响.
主要方法:
- 赛卡鹿被随机分配到三个饮食组:CON (0克/天氨酸),LMet (4克/天氨酸) 和HMet (6克/天氨酸).
- 分析了营养物质的明显消化能力,角的营养成分,液氨基酸概况,便挥发性脂肪酸和肠道细菌.
- 微生物组分析包括主要坐标分析 (PCoA) 和阿多尼斯分析社区结构差异.
主要成果:
- 氨酸补充剂显著增加了有机物,NDF和ADF的明显消化能力.
- 马角中的原蛋白和原蛋白在补充 metionin时显著增加,而含量在较高水平下降.
- 氨酸改变了液的氨基酸组成,并显著改变了肠道菌群的组成,减少了未识别的细菌,并改变了特定的属,如Rikenellaceae_RC9_gut_group和Lachnospiraceae_UCG-010.
结论:
- 食氨酸补充剂可以提高料利用效率,并改善Sika鹿的角质量.
- 氨酸影响肠道微生物组合,这表明它在宿主微生物相互作用中的作用.
- 这些发现支持 metionin 作为优化 Sika 鹿产量和健康的关键营养素.
相关概念视频
01:27Microorganisms in Agriculture and Food industry
Microorganisms play a crucial role in agriculture and the food industry, contributing to soil fertility, crop protection, and food production. Their functions range from nitrogen fixation and biopesticide production to fermentation and food preservation, making them indispensable to sustainable farming and food safety.Role in AgricultureNitrogen-fixing bacteria, such as Rhizobium (symbiotic) and Azotobacter (free-living), convert atmospheric nitrogen into ammonia through biological nitrogen...
01:29Microbes in Food Production
Microbial fermentation is central to food biotechnology, enhancing flavor, texture, preservation, and stability. Fermentative microorganisms metabolize carbohydrates into organic acids, alcohols, and other metabolites that inhibit spoilage organisms and improve digestibility while contributing distinctive sensory qualities.In baking, amylases naturally present in flour hydrolyze starch into monosaccharides such as glucose, which Saccharomyces cerevisiae ferments anaerobically. Through...
01:27Microbes in the Production of Fermented Foods
Lactic acid bacteria (LAB) and molds are instrumental in fermenting plant-based foods to enhance preservation and ensure year-round availability. These microbial processes convert plant carbohydrates into organic acids and other metabolites that inhibit spoilage organisms and contribute to the sensory qualities of the final product.In sauerkraut production, cabbage goes through a microbial succession that starts with cocci such as Leuconostoc mesenteroides. These microbes begin fermentation by...
01:27Production of Antibiotics
Penicillin, one of the earliest and most widely used antibiotics, is produced industrially by the filamentous fungus Penicillium chrysogenum. Large stirred-tank bioreactors ranging from tens to hundreds of thousands of liters maintain tightly controlled temperature, pH, and dissolved oxygen conditions to support fungal metabolism and maximize antibiotic yield. Penicillin is a secondary metabolite, synthesized primarily during the stationary growth phase, which requires a carefully managed...
01:21Microbiota Modulation by Antibiotics
Antibiotics have revolutionized modern medicine by saving countless lives from bacterial infections. However, their widespread use has inadvertently harmed the delicate balance of the human gut microbiota. The gut microbiota, a complex community of bacteria, archaea, viruses, and fungi, plays a vital role in regulating metabolism, immune responses, and maintaining intestinal health. Antibiotics, especially broad-spectrum types, disrupt this ecosystem by eradicating both harmful and beneficial...
01:25Clinical Significance of Antibiotic Resistance
Methicillin-resistant Staphylococcus aureus (MRSA) presents a critical public health threat, arising from its capacity to resist β-lactam antibiotics due to acquisition of the mecA gene within the staphylococcal cassette chromosome mec (SCCmec). This gene encodes penicillin-binding protein 2a (PBP2a), which impairs binding efficacy of methicillin and other β-lactams. MRSA has evolved into distinct clonal lineages impacting humans and animals alike, reinforcing its significance within the One...