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首页> 外文会议>International Symposium on the Nutrition of Herbivores(ISNH-7); 20070917-22; Beijing(CN) >Transdisciplinary studies of plant secondary metabolites: lessons from ecology for animal science and vice versa
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Transdisciplinary studies of plant secondary metabolites: lessons from ecology for animal science and vice versa

机译：植物次生代谢产物的跨学科研究：来自动物科学生态学的课程，反之亦然

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摘要

Plant secondary metabolites (PSM) occur widely in the plants eaten by domestic livestock and wild herbivores and are the subject of much research by both animal scientists focussed on improving production, and ecologists interested in the evolution and functioning of natural ecosystems. Surprisingly there Is little cross-fertilization between these two research areas.In this paper we highlight some of the recent major themes in research on PSM and emphasise where animal science can learn from ecology and vice versa. Ecologists have tended to regard PSM as entirely negative, but there is good evidence of positive effects in ruminant herbivores from low concentrations of tannins and saponins. A major focus for ecologists has been the potential for a limited detoxification capacity to restrict diet choice and recent evidence has linked detoxification processes to diet mixing. For livestock, the major focus on detoxification has been on microbial transformations in the rumen and new techniques promise a better understanding of the potential for manipulating the rumen ecosystem for ameliorating the negative effects of ingested PSM. A major challenge for the future is in translating the results of laboratory studies to free-ranging animals. Field studies must take into account the frequency and spatial distributions of PSM and we should not expect there to be simple relationships between diet choices of animals and concentrations of these compounds.
机译：植物次生代谢物（PSM）广泛存在于家畜和野生食草动物食用的植物中，这是专注于提高产量的动物科学家和对自然生态系统的演化和功能感兴趣的生态学家的众多研究的主题。令人惊讶的是，这两个研究领域之间几乎没有交叉应用。在本文中，我们重点介绍了PSM研究中的一些最新主题，并强调了动物科学可以向生态学学习的领域，反之亦然。生态学家倾向于将PSM视为完全阴性，但是有充分的证据证明低浓度的单宁和皂苷对反刍动物的草食动物具有积极作用。生态学家的主要关注点是排毒能力有限以限制饮食选择，而最近的证据表明排毒过程与饮食混合有关。对于牲畜而言，排毒的重点一直放在瘤胃中的微生物转化上，而新技术有望更好地理解操纵瘤胃生态系统以减轻摄入的PSM的负面影响的潜力。未来的主要挑战是将实验室研究的结果转化为放养动物。实地研究必须考虑PSM的频率和空间分布，我们不应期望动物的饮食选择与这些化合物的浓度之间存在简单的关系。

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