基于牧场的层母系统下的蛋营养成分季节性变化:对可持续农业的影响
Rachel Van Duinen1, Selin Sergin1, Shreya Chavva1
1Department of Food Science and Human Nutrition, Michigan State University, East Lansing, Michigan, United States of America.
PloS one
|September 25, 2025
概括
牧场养的蛋表现出季节性营养变化. 维生素A和E,欧米茄-3和有利的n-6:n-3比率的最佳水平发生在9月至11月期间,突出显示管理需要始终保持质量.
科学领域:
- 可持续农业和动物科学.
- 禽类产品的营养生物化学.
- 环境对食品质量的影响.
背景情况:
- 基于牧场的家禽系统通过改善土壤健康,生物多样性和动物福利来提高可持续性.
- 自由放养的料消费可以增加蛋的营养价值.
- 季节性环境变化可能会影响蛋的营养成分和系统的弹性.
研究的目的:
- 评估季节性变化对料质量,土壤和气候对蛋营养特征的影响,以再生的牧场为基础的系统.
- 为了确定牧场养的蛋最佳营养质量的特定时期.
- 为提高全年蛋营养质量的管理实践提供信息.
主要方法:
- 在俄俄州南部,每月从5月到12月收集料和蛋.
- 脂肪酸的分析 (气相色谱-质谱),胡卜素和 (颜色测量),维生素 (液相色谱) 和矿物质 (诱导合的等离子体光辐射光谱).
- 通过总可消化营养素 (TDN) 和统计分析评估牧场质量,包括稀疏的部分最小方程歧视和随机森林模型.
主要成果:
- 牧场质量 (TDN) 在10月达到顶峰;蛋蛋白符合美国农业部的"AA级"标准,除了8月.
- 黄色素,维生素A,维生素E和胡卜素度随着季节的变化而显著变化,在不同的时间达到峰值.
- 从9月到11月的蛋含有更高的维生素A和E,必需的欧米茄-3脂肪酸,以及更有利的n-6:n-3比率.
结论:
- 季节性变化显著影响牧场养的蛋的营养成分.
- 在特定季节的有针对性的管理策略可以优化蛋的营养质量.
- 了解这些动态对于增强消费者健康益处和可持续家禽生产的弹性至关重要.
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