Publication Date
1993
Description
Six harvests were made (at 3-weekly intervals) from spring regrowth of Russell lupin (Lupinus polyphyllus x Lupinus arboreus ) to evaluate changes in yield and nutritive value with plant maturity. Dry matter (DM) yield and neutral detergent fibre (NDF) concentration increased from 40 to 160 g/plant and 24 to 46%, respectively, while nitrogen concentration, in vitro cellulase DM and organic matter digestibility decreased from 4.5-2.4%, 77-56% and 81-55%, respectively, as the lupins matured from late vegetative to hard pod stage. Peak digestible DM (DDM) yields of Russell lupins, at about 90 g/plant, occurred at full bloom and dry pod, The first peak DDM yield had less DDM from dead matter and a greater proportion of DDM from components with >80 % DM digestibility, It was concluded that Russell lupin produces highly digestible DM with high N concentration and maintain these qualities over a long period.
Citation
Kitessa, S M.; Hill, G D.; and Nicol, A M., "Yield, Composition and in vitro Digestibility of Russell Lupin" (2024). IGC Proceedings (1993-2023). 9.
https://uknowledge.uky.edu/igc/1993/session48/9
Included in
Agricultural Science Commons, Agronomy and Crop Sciences Commons, Plant Biology Commons, Plant Pathology Commons, Soil Science Commons, Weed Science Commons
Yield, Composition and in vitro Digestibility of Russell Lupin
Six harvests were made (at 3-weekly intervals) from spring regrowth of Russell lupin (Lupinus polyphyllus x Lupinus arboreus ) to evaluate changes in yield and nutritive value with plant maturity. Dry matter (DM) yield and neutral detergent fibre (NDF) concentration increased from 40 to 160 g/plant and 24 to 46%, respectively, while nitrogen concentration, in vitro cellulase DM and organic matter digestibility decreased from 4.5-2.4%, 77-56% and 81-55%, respectively, as the lupins matured from late vegetative to hard pod stage. Peak digestible DM (DDM) yields of Russell lupins, at about 90 g/plant, occurred at full bloom and dry pod, The first peak DDM yield had less DDM from dead matter and a greater proportion of DDM from components with >80 % DM digestibility, It was concluded that Russell lupin produces highly digestible DM with high N concentration and maintain these qualities over a long period.
