In order to evaluation of
wetland plant spices as a forage source in animal nutrition, three species,
Paspalum distichum, Sparganium erectum and Aeloropus litoralis
that has vast cover in Mazandaran wetland was chosen. At the 30%
of flowering, randomly, 3 kg of feed samples were taken and kept on
-20oC, until that defreeze before chemical analysis. Chemical
composition including crud protein (CP), crud fiber (CF), neutral detergent
fiber (NDF), acid detergent fiber (ADF), total digestible nutrients
(TDN), digestible dry matter (DDM), predicted dry matter intake, relative
forage value (RFV) and relative forage quality (RFQ) of feeds were calculated.
Using two ruminal fistulated mature Zel sheep, NDF digestibility (%
of NDF) were measured via in situ techniques. Dry matter, CP,
CF, NDF, ADF, and ash content of three spices were significantly different.
Aeloropus litoralis had the highest dry matter, CP, ADF, and
ash, but Sparganium erectum had the highest CF, NDF. There were
not significant different between NFC and ether extract content of three
plant spices. Digestibility of NDF after 48-h ruminal incubation was
significantly different and the values were 0.65, 0.63, and 0.66 % of
NDF in Paspalum distichum, Sparganium erectum, and Aeloropus
litoralis, respectively. However, digestible NDF (NDFD; % of NDF)
had no difference in Paspalumdistichum, Sparganium erectum, and
Aeloropus litoralis (45.68, 45.51 and 44.10% of NDF, respectively).
TDN, DDM content of three spices and predicted DMI (% of BW) had not
significant differences. The values of RFV and RFQ were significantly
different in Paspalumdistichum, Sparganium erectum, and
Aeloropus litoralis (118.08, 114.73 and 124.23; 143.26,116.32
and 136.27, respectively. It can be concluded that wetland grasses are
high in NDF, but that fiber typically is highly digestible; therefore,
wetland grasses may be evaluated more accurately when tested for RFQ
instead of RFV.