Effect of Different Feed Additives on In Vitro Total Gas and Methane Production of Maize Hay and Bajra Straw based TMR
DOI:
https://doi.org/10.48165/ijvsbt.20.4.07Keywords:
Feed additives,, Methane production,, Total gas production, , Total mixed ration.Abstract
The present study was conducted to investigate the efficacy of different feed additives in TMR on in vitro total gas production and methane production. Total mixed ration was prepared by mixing of bajra straw, maize hay and concentrate in the ratio of 30:30:40. Feed additives included in TMR on DM basis were Monensin 30 mg/kg (T1), cellulase (10,00,000 IU/g) 0.5% (T2), xylanase (1,50,000 IU/g) 0.5% (T3), chitosan 1% (T4), sodium bicarbonate 1% (T5), magnesium oxide 1% (T6), combination of sodium bicarbonate + magnesium oxide 0.5% each (T7) and combination of cellulase + xylanase 0.5% each (T8). Rumen liquor was collected from two adult Surti goats each 2 h post-feeding of TMR with above additives. Result revealed that in vitro total gas production (mL/200 mg) was significantly (p<0.01) increased in TMRs supplemented with cellulase (28.39±0.51), xylanase (27.33±0.54) and its combination (32.92±0.62) as well as chitosan (26.82±0.99) as compared to control (22.08±0.56). In vitro methane production (%) was significantly (p<0.01) increased in TMRs supplemented with magnesium oxide (18.15±1.02) and its combination with sodium bicarbonate (17.91±0.15) as compared to control (16.59±0.19). Whereas, in vitro methane production (mL/200 mg & mL/100 mg) was significantly (p<0.05) increased in TMR supplemented with combination of cellulase and xylanase (5.13±0.13 & 2.56±0.06) as compared to control (3.66±0.05 & 1.83±0.02). While, ratios of in vitro methane production to fermentation parameters were significantly (p<0.01) improved in combination of cellulase and xylanase as compared to control.
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