The content of net energy for lactation, crude protein and crude fibre of fifteen grass species were compared. Samples were collected in field trials during the first, second and third growth cycle of a total of five growth cycles per year. Perennial ryegrass (Lolium perenne L.) produced the forage with the highest content of net energy for lactation at most sampling dates. Meadow fescue (Festuca pratensis Huds.) also had a high energy content as well. During the first growth cycle, Italian ryegrass (Lolium multiflorum Lam.) was comparable to perennial ryegrass. During regrowth cycles the energy content of this species was lower and decreased at a faster rate than the other species. The ranking of energy content of the grass species was different depending when the plants were compared: at the same age or at the same stage of development. Climatological factors influenced the energy content of the grass species, which caused important differences between the years. The ranking order of the grass species was only slightly influenced by climatological factors.
Tall oat grass and golden oat grass are typical hay-meadow grasses that are also suitable for forage mixtures. Of the four tall and three golden oat grass varieties tested, only one new variety of tall oat grass is likely to make it onto the List of Recommended Varieties.
Stevenel P., Wendling M., Brabant C., Suss H., Savoyat C., Dierauer H., Mascher F., Charles R.
FiBL and Agroscope investigated bread wheat varieties to determine their yield and quality stability. The results show that the choice of variety must be adapted to the site and that high yield potential does not go hand-in-hand with a high protein content.
Adapted and high-yielding varieties of forage plants are important for Switzerland as a grassland country. Hybrid ryegrass is a versatile forage grass that, thanks to breeding advances, has become even more persistent, disease-resistant and high-yielding over the past 30 years.