Benefits of Condensed Tannins in Forage Legumes Fed to Ruminants: Importance of Structure, Concentration, and Diet Composition

Crop Science

Bee, Giuseppe^2¹  Smith, Lydia M.J.^10²  Hoste, Hervé^3³  Skøt, Leif^9⁴  Kölliker, Roland^5⁵  Pellikaan, Wilbert F.^8⁶  Lüscher, Andreas^6⁷  Dohme-Meier, Frigga^2⁸  Totterdell, Paul^12⁹  Thamsborg, Stig M.^11^1,10  Karonen, Maarit^4^1,11  Salminen, Juha-Pekka^4^1,12  Mueller-Harvey, Irene^1^1,13  Niderkorn, Vincent^7^1,14 

[1]Agroscope-Posieux, CP 64, 1725 Posieux, Switzerland^2

[2]Cotswold Seeds, London Rd., Moreton-in-Marsh GL56 0JQ, UK^12

[3]Dep. of Chemistry, Univ. of Turku, 20014 Turku, Finland^4

[4]Dep. of Veterinary Disease Biology, Univ. of Copenhagen, Dyrlægevej 100, Frederiksberg C 1870, Denmark^11

[5]Forage Production and Grassland Systems, Agroscope, 8046 Zürich, Switzerland^6

[6]IBERS, Aberystwyth SY23 3EB, UK^9

[7]INRA UMR1213 Herbivores, 63122 St-Genès-Champanelle, France^7

[8]INRA, UMR 1225 IHAP, BP 87614, Toulouse 31076, France^3

[9]Institute of Veterinary and Biomedical Sciences, Massey Univ., Private Bag 11222, Palmerston North 4474, New Zealand^14

[10]Molecular Ecology, Agroscope, 8046 Zürich, Switzerland^13

[11]Molecular Plant Breeding, ETH Zürich, 8092 Zürich, Switzerland^5

[12]NIAB, Huntingdon Rd., Cambridge CB3 0LE, UK^10

[13]School of Agriculture, Policy and Development, Univ. of Reading, PO Box 236, Reading RG6 6AT, UK^1

[14]Wageningen Univ. and Research, Animal Nutrition Group, PO Box 338, 6700 AH Wageningen, the Netherlands^8

关键词: BSA;    bovine serum albumin;    CT;    condensed tannin;    mDP;    mean degree of polymerization;    MYB;    myeloblastosis;    NIRS;    near-infrared reflectance spectroscopy;    PC;    procyanidin;    PD;    prodelphinidin;    PEG;    polyethylene glycol;    RuBisCo;    ribulose-1;    5-bisphosphate carboxylase/oxygenase;    SSR;    simple sequence repeat;   

DOI  :  10.2135/cropsci2017.06.0369

学科分类：农业科学（综合）

来源: Crop Science

【 摘 要 】

Condensed tannins (CTs) account for up to 20% of the dry matter in forage legumes used as ruminant feeds. Beneficial animal responses to CTs have included improved growth, milk and wool production, fertility, and reduced methane emissions and ammonia volatilization from dung or urine. Most important is the ability of such forages to combat the effects of gastrointestinal parasitic nematodes. Inconsistent animal responses to CTs were initially attributed to concentration in the diet, but recent research has highlighted the importance of their molecular structures, as well as concentration, and also the composition of the diet containing the CTs. The importance of CT structural traits cannot be underestimated. Interdisciplinary research is the key to unraveling the relationships between CT traits and bioactivities and will enable future on-farm exploitation of these natural plant compounds. Research is also needed to provide plant breeders with guidelines and screening tools to optimize CT traits, in both the forage and the whole diet. In addition, improvements are needed in the competitiveness and agronomic traits of CT-containing legumes and our understanding of options for their inclusion in ruminant diets. Farmers need varieties that are competitive in mixed swards and have predictable bioactivities. This review covers recent results from multidisciplinary research on sainfoin (Onobrychis Mill. spp.) and provides an overview of current developments with several other tanniniferous forages. Tannin chemistry is now being linked with agronomy, plant breeding, animal nutrition, and parasitology. The past decade has yielded considerable progress but also generated more questions—an enviable consequence of new knowledge!

【 授权许可】

CC BY