Externally funded project

Ermittlung des Futterwertes und der Verdaulichkeit der Blattmassen von Luzerne und verschiedenen Kleearten (Blattmasse)


Project Details
Project duration: 03/201205/2016


Abstract



Leguminous
plants with small seeds like alfalfa, and various types of clover, are rich
sources of protein, although animals with a single stomach find it hard to
digest the entire plant, due to high levels of fibrous material. However,
separating the leaves from the stems can certainly increase the nutritional
value of feed. In comparison to the stems, the leaves have a high protein
content and much less fibrous plant tissue. Thus, the availability of essential
amino acids rises significantly. In vitro
processing enables ileal digestibility to be assessed properly, providing a
good estimation of the feed value. Separated leaf-matter can be considered as a
really high quality protein source which can contribute to the diets of both
poultry and pigs and which could largely replace imported protein.



Nonetheless,
the competitive ability of this widely available homegrown source of protein is
not only affected by the raw protein content (per kg DM) of the leaves
attained. The yield gained per unit area of essential amino acids, the
digestibility, the costs of preparation and the potential uses of the remaining
stem material are all relevant. The great variation in the yield per unit area,
dependent on plant species, type, location, way cuttings are used and the
differing content of valuable nutrients means that this leafy material cannot
be seen as a standardized protein source such as soy beans. Making use of the
potential in the leafy material is actually much more about synergies. The
variability of the parameters on the different levels means a
process-orientated approach is necessary. The individual steps should thus be
based on quantifying the yields and on NIRS analysis of the intermediate
products, so that the costs and benefits can be weighed up and the leaf- and
stem-matter obtained can each be made use of in the best way possible.


Last updated on 2017-29-08 at 14:47