Abstract
In the present study oat hay and silage were compared for their methane (CH4) production and nutrient utilization potential in Murrah buffaloes. Sixteen dry buffaloes (566.5± 12.5 kg live weight) were selected from Livestock Research Centre of the National Dairy Research Institute, Karnal. Animals were distributed randomly into two groups (T1 and T2) based on body weight. Animals in group T1 and T2 were offered oat hay and oat silage, respectively along with supplementation of mineral mixture and salt. After feeding for a duration of 60 days, a digestibility trial was conducted followed by methane emission measurement by SF6 tracer technique. Average daily DM intake was similar in both the groups, whereas, fibre (NDF, ADF) intake was significantly (P<0.05) higher in hay fed group. Digestibility of nutrients (DM, OM, EE, NDF and ADF) except CP was not affected by hay or silage; CP digestibility was higher (60.59%) on silage feeding as compared to hay (58.28%) feeding. Feeding of hay resulted in more (P<0.05) enteric CH4 emissions (341.35 l/d) than silage feeding (317.86 l/d). Total CH4 production was reduced by 6.86% on oat silage than hay. Higher (P<0.05) percent of ME was lost in methane in group T1 (16.41) as compared to T2 (13.97). Thus, Oat could be stored as silage than hay for lowering methane emission from Murrah buffaloes.
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