Forage Quality Analysis of Perennial Legumes-Subterranean Clover Mixtures

Forage quality characteristics of field-grown mixtures of sainfoin with cocksfoot (50:50%), sainfoin with tall fescue (50:50%), and the same with the addition of subterranean clover in their composition (33:33:33%) were measured. Forage biomass from the mixtures of sainfoin with cocksfoot had generally higher forage quality than mixtures with tall fescue. It had higher crude protein content (11.52% of dry matter (with 1.07% units), significantly higher digestibility (61.74%) (with 6.51% units), higher neutral detergent fiber content (53.42%) (with 3.22% units), higher nutritive value (Unité Fourragère Viande – Unité Fourragère Lait, 0.690–0.583) and higher protein feeding value (Total Digestible Protein – Protein digestible dans l’intestine in dependence of nitrogen – Protein digestible dans l’intestine in dependence of energy), 72–70–79 g/kg of dry matter. Forage biomass showed more balanced basic chemical composition after the addition of subterranean clover, i.e.: higher crude protein content (with 0.30% units) and lower crude fiber content (with 0.14% units) for mixtures with cocksfoot; higher digestibility (with 0.29% units) for mixtures with cocksfoot; lower neutral detergent fiber content (with 0.45% units) for mixtures with cocksfoot and with 3.15% units for mixtures with tall fescue, higher energy feeding value (Unité Fourragère Viande – Unité Fourragère Lait) (with 0.007–0.012 for mixtures with cocksfoot and with 0.009–0.014 for mixtures with tall fescue), higher protein feeding value for both mixtures with cocksfoot and tall fescue. Forage biomass from mixtures of sainfoin with cocksfoot and Trifolium subterraneum ssp. brachycalicinum had the highest crude protein (11.89% of dry matter), the lowest crude fiber content (27.07% of dry matter) and the highest digestibility (62.81% of dry matter).

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Sustainable Yield Index in Some Mixtures

Vasileva¹,

Ilieva²

2016

(JGIASS

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Sustainable yield index (SYI), nitrogen in dry aboveground mass yield and amount of fixed nitrogen of birdsfoot trefoil, sainfoin and subterranean clover pure grown and in mixtures with tall fescue in the next ratios: birdsfoot trefoil + tall fescue (50:50), sainfoin + tall fescue (50:50), subterranean clover + tall fescue (50:50), birdsfoot trefoil + subterranean clover + tall fescue (33:33:33), sainfoin + subterranean clover + tall fescue (33:33:33) were studied. Pot trial was carried out in the Institute of Forage Crops, Pleven, Bulgaria during 2011-2012. SYI in pure grown birdsfoot trefoil (0.767), sainfoin (0.720) and subterranean clover (0.666) was calculated. Sustainable yield index (SYI) in mixtures was found be higher -from 9.6% (sainfoin+tall fescue) to 18.2% (subterranean clover + tall fescue). Birdsfoot trefoil accumulated the highest amount of fixed nitrogen in dry aboveground biomass (8102 mg N/kg DM), followed by subterranean clover (6730 mg N/kg DM) and sainfoin (5598 mg N/kg DM). On averaged from mixtures studied nitrogen in dry aboveground biomass (7540 mg N/kg DM) was found be higher by 10.7% as compared to pure grown crops (6810 mg N/kg DM). Amount of fixed nitrogen obtained from mixtures (95.64 mg/kg DM) was by 15.2% higher as compared to pure grown forage legumes (81.79 mg/kg DM). Parameters as sustainable yield index, nitrogen in dry aboveground biomass, amount of fixed nitrogen were found be higher in mixtures. Keywords: Sustainable yield index (SYI), nitrogen in dry aboveground mass yield, fixed nitrogen.

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Forage Quality Analysis of Perennial Legumes-Subterranean Clover Mixtures

Cited by 4 publications

References 19 publications

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Nutritive value of forage biomass from sainfoin mixtures

Sustainable Yield Index in Some Mixtures

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