Future of NSP-degrading enzymes to improve nutrient utilization of co-products and gut health in pigs
Future of NSP-degrading enzymes to improve nutrient utilization of co-products and gut health in pigs
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DOI：
10.1016/j.livsci.2010.07.017
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发表时间：
2010-09-01
影响因子：
1.8
通讯作者：
Simmins, P. H.
中科院分区：
文献类型：
--
作者：
Zijlstra, R. T.;Owusu-Asiedu, A.;Simmins, P. H.
在全球范围内，预计猪饲料中的副产品量将继续增加，导致饲喂非淀粉多糖（NSP）含量高于传统谷物饲料的饲料。这种饮食可能为NSP降解酶提供机会，以改善营养消化率和自愿采食量，从而降低饲喂副产品含量高的饮食的风险。补充酶和营养物消化率之间的联系是可以理解的;然而，与消化生理学中的其他潜在机制的联系，例如，肠道微生物种群和有益于肠道健康和自愿采食量的Pasta的物理特性还没有得到很好的理解。七位演讲者强调了NSP，酶和消化生理学之间联系的独特组成部分。提出的关键知识差距是：更好地了解加工过程中酶底物的变化，饲料成分而不是营养素和NSP（抗生素残留，真菌毒素），以及副产品可能对改变肠道健康和饲料摄入量的影响。总之，正确组合和比例的补充酶可能在猪日粮中有效利用副产品的营养方面发挥重要作用，但其对肠道健康的影响需要进一步研究。(C)2010 Elsevier B. V.保留所有权利。
Globally, the amount of co-products in swine diets is expected to continue to increase, resulting in the feeding of diets with a higher content of non-starch polysaccharides (NSP) than traditional cereal-based diets. Such diets may open up opportunities for NSP-degrading enzyme to improve nutrient digestibility and voluntary feed intake and thereby reduce the risk of feeding diets high in co-products. The link between supplemental enzymes and nutrient digestibility is understood; however, links to other underlying mechanisms in digestive physiology, e.g., intestinal microbial populations and physical characteristics of digesta to benefit gut health and voluntary feed intake are not well understood. Seven presenters highlighted unique components of these links between NSP, enzymes, and digestive physiology. Suggested critical gaps in knowledge were: a better understanding of the changes in enzyme substrates during processing, feedstuff components other than nutrients and NSP (antibiotic residues, mycotoxins), and the impact that co-products may play on altering gut health and feed intake. In conclusion, supplemental enzymes in the correct combination and proportions may play an important role in efficient and effective nutrient use of co-products in swine diets, but their effects on gut health warrant further investigation. (C) 2010 Elsevier B.V. All rights reserved.