Condensed Tannins in Sainfoin: Composition, Concentration, and Effects on Nutritive and Feeding Value of Sainfoin Forage
2014/12/22 by Yuxi Wang, Tim A. McAllister, Surya Acharya +1 · 18 citations
Agricultural and Biological Sciences · #Ruminant Nutrition and Digestive Physiology #Plant and fungal interactions #Botanical Research and Chemistry
paper · doi:10.2135/cropsci2014.07.0489
Abstract
ABSTRACT Legume forage is the most economical source of nutrients for ruminants. Sainfoin ( Onobrychis viciifolia Scop.) is high nutritive forage growing worldwide and possesses polyphenolics including condensed tannins (CT) that contribute to some of its superior nutritional properties such as improved protein utilization, bloat‐free, and anthelmintic characteristics. This review attempts to capture the latest research in characterizing the impact of polyphenolics on the feeding value of sainfoin with an emphasis on CT. Sainfoin contains a diverse array of polyphenolics and its CT content declines as the plant matures, with an increase in the degree of polymerization and a decreasing proportion of prodelphinidins, resulting in a reduction in biological activity. This forage is best to be utilized between bud to flowering stage to balance the biological activity of CT and biomass yield. Incorporation of sainfoin into alfalfa ( Medicago sativa L.) pasture has been effective in reducing alfalfa pasture bloat due to the presence of CT. New sainfoin populations suitable for survival in high‐performance grazing systems have been developed and have demonstrated superior anti bloat activity due to the increased grazing persistence. Fresh sainfoin is the best feed for cattle for maximum effect of CT, but if it needs to be preserved then hay would be better than silage in terms of preservation of the biological activity of CT. Although greater CT content is desirable for this forage in terms of antibloat and antiparasitic activity, sainfoin with CT concentration at about 50 g kg −1 dry matter (DM) offer the best feed value.
Citations
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- Large Variability of Proanthocyanidin Content and Composition in Sainfoin (Onobrychis viciifolia). [europepmc]
- The Use of Gene Modification and Advanced Molecular Structure Analyses towards Improving Alfalfa Forage. [europepmc]
- Characterization of Condensed Tannins from Purple Prairie Clover (Dalea purpurea Vent.) Conserved as either Freeze-Dried Forage, Sun-Cured Hay or Silage. [europepmc]
- Effect of tannin-containing hays on enteric methane emissions and nitrogen partitioning in beef cattle1. [europepmc]
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- Pasture chemoscapes and their ecological services. [europepmc]
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- Effect of Intrinsic Tannins on the Fermentation Quality and Associated with the Bacterial and Fungal Community of Sainfoin Silage. [europepmc]
- Dietary Supplementation of Chestnut Tannins in Prepartum Dairy Cows Improves Antioxidant Defense Mechanisms Interacting with Thyroid Status. [europepmc]
- Recent advances in research in the rumen bloat of ruminant animals fed high-concentrate diets. [europepmc]
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