Collaborative Research: Plant Phenolics and Ruminant DietaryChoices

合作研究：植物酚类物质和反刍动物饮食选择

• 批准号: 8810244
• 负责人: Charles Robbins
• 金额: $ 6.07万
• 依托单位: Washington State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1988
• 资助国家: 美国
• 起止时间: 1988-06-01 至 1991-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8810244&HistoricalAwards=false
• 关键词: Collaborative; Research; Plant; Phenolics; Ruminant

The manner in which plant phenolics determine dietary choices of ruminants and foragine strategies of ruminants govern the phenolic chemistry of plants will be investigated. Plants have adapted differently to the stresses of browsing and grazing ruminants. While the grazing interaction can be mutualistic, the browsing interaction is an evolutionary struggle of allelochemicals and detoxification pathways. Ecologically important allelochemicals in the browsing interaction include phenolics. This interdisciplinary study of the ruminant.phenolic interaction will involve feeding trials of captive deer and sheep, nutritional analyses of natural forages, and chemical investigations of plant phenolics and animal metabolism. The hypothesis that condensed tannins primarily affect nitrogen economy, while hydrolyzable tannins predominantly act as toxins will be tested. To test this hypothesis, the effects of tannins on grazers will be compared with the effects on browsers with emphasis on the role of salivary proteins in tannin detoxification. In addition, the effect of absorable phenolics on diet selection in ruminants will be explored. Rather than attempt to determine the metabolic fates of all phenolics, the phenolic profile of various plants using a simple fractionation scheme based on the polarity and solubility of phenolics will be established. Single forage feeding trials will be used to correlate phenolic profiles with intake suppression, and multiple forage feeding trials will be used to test the predictive power of our method. It is anticipated that with this scheme, it will be possible to predict which forages have complementary allelochemical profiles, and which will be selected as complementary dietary components by browsing ruminants.

植物酚类物质决定膳食的方式 反刍动物的选择和觅食策略决定了 将研究植物的酚类化学。 植物 对啃食和放牧的压力有着不同的适应 反刍动物 虽然放牧的相互作用可以是互利的， 浏览交互是一个进化的斗争， 化感物质和解毒途径。 生态 在浏览互动中重要的化感物质包括 酚醛树脂 这项反刍动物的跨学科研究。 互动将涉及圈养鹿的喂养试验， 绵羊，天然牧草的营养分析， 植物酚类物质和动物代谢的研究。 缩合单宁主要影响 氮经济，而水解单宁主要作为 将进行毒素测试。 为了验证这一假设， 单宁对食草动物的影响将与对浏览器的影响进行比较 重点是唾液蛋白在单宁中的作用 解毒 此外，可溶解的酚类化合物 对反刍动物饮食选择的影响。 而不是 试图确定所有酚类物质的代谢命运， 使用简单分级分离的各种植物的酚类分布图 基于酚类化合物的极性和溶解度的方案将是 确立了习 单一饲料喂养试验将用于 将酚类物质与摄入抑制相关联， 饲料喂养试验将用于测试预测能力 我们的方法。 预计通过这一计划， 可以预测哪些牧草具有互补性 化感物质谱，并且将被选择为 通过浏览反刍动物补充膳食成分。