商业益生菌补充剂诱导的基于年龄的差异性反应在放牧山羊中的放牧山羊
Eunice Ndegwa1, Doaa E Elhadedy2, Caitlyn Richey3
1Agricultural Research Station, Virginia State University, Petersburg, VA, USA. endegwa@vsu.edu.
Probiotics and antimicrobial proteins
|August 4, 2024
概括
这项研究发现,幼山羊的益生菌可以提高免疫力和蛋白质水平,但不能改善生长. 在老山羊中,益生菌补充显示出混合的结果,增长减少和不清楚的益处,这表明需要进一步的研究.
科学领域:
- 动物科学动物科学
- 微生物学 微生物学
- 免疫学 免疫学 免疫学
背景情况:
- 在小反动物生产中益生菌的益处尚未得到充分研究.
- 了解益生菌对山羊健康和表现的影响对于生产系统至关重要.
研究的目的:
- 评估商业益生菌对牧场山羊从出生到10个月的健康和绩效指标的影响.
- 评估益生菌补充的山羊的免疫反应,生长率和肠道微生物特征.
主要方法:
- 26只新生的山羊羔被随机分配到对照 (盐水) 或益生菌治疗组.
- 监测了健康指标,体重,免疫力 (IgA,IgG,先天性),总蛋白质,血红素 (HCT) 和肠道细菌 (LAB,大肠杆菌,大肠杆菌病毒性基因).
- 分析了数据,以比较实验期间各组之间的结果.
主要成果:
- 没有观察到一般健康状况,LAB或总大肠杆菌计数的显著差异.
- 益生菌组在特定时间点显示大肠杆菌病毒性基因 (stx1,stx2) 的流行率增加.
- 补充剂后总蛋白质和IgA增加,以及先天性免疫标志物在断奶后升高.
- 在断奶后1-2个月,益生菌组的血红素水平更高.
- 哺乳期前的生长率没有受到影响,但在4个月以上的山羊中,生长率下降.
结论:
- 早期的益生菌补充剂可能会在未断奶的山羊中提供免疫刺激的好处.
- 健康山羊的断奶后净益处尚不清楚,观察到对生长的一些负面影响.
- 建议进行进一步的研究,以澄清益生菌在山羊生产中的长期影响和最佳使用.
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