The common reed (Phragmites australis) as a source of roughage in ruminant nutrition
2002
Baran, M. | Varadyova, Z. (Akademia Vied, Kosice (Slovak Republic). Ustav Fyziologie Hospodarskych Zvierat) | Kracmar, S. | Hedbavny, J.
The use of common reed (Phragmites australis) as a potential source of roughage in ruminant nutrition was investigated in vitro. The fermentation parameters of Phragmites australis, meadow hay, wheat straw, barley, amorphous cellulose and glucose were compared. Measurements were made by means of the pressure transducer technique. Phragmites australis had a relatively high concentration of Mg (2.65 g/kg), K (10.9 g/kg) and Mn (97 mg/kg). Dry matter digestibility was 41.8 % (between meadow hay: 50.2 % and wheat straw: 36.6 %. Methane production was significantly higher than that of wheat straw and meadow hay. The total gas production was lower than that of barley, amorphous cellulose and glucose (P0.001). The acetate/propionate ratio (4.4) was high in comparison with other substrates. Our results thus indicate a potential use of Phragmites australis as a new source of roughage with a favourable concentration of nitrogen, K and Mn.
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