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Table 5.

Effect of gas kinetics and accumulated gas output of the concentrate on roughage (C: R) ratio with kefir supplementation

Item align="left" colspan="1" rowspan="1" valign="top">Concentrate feed mixture% Alfalfa hay
100 80 60 40 20
Gas Pro 24h (mL) 67.82a 65.325ab 63.591b 59.71c 55.84d 52.97e
GPDM (mL/200 mg) 75.92a 73.95b 73.80b 72.32b 68.93c 65.54d
GPOM (mL/200 mg) 1979.15a 1926.88b 1877.42c 1839.80c 1768.65d 1697.87e
GPNDF (mL/200 mg) 11.11a 10.93a 10.54b 10.34bc 9.94c 9.54c
GPADF (mL/200 mg) 10.60 8.82 10.30 10.21 9.94 9.66
IVOMD% 66.60a 68.10a 52.29b 38.396c 29.51d 23.60d
ivTDDM224.832 242.21 238.84 249.28 276.46 302.80
PF (mL/mg) 0.747 0.73 0.73 0.72 0.69 0.66
ME (MJ/Kg DM) 1.10 1.11 1.15 1.21 1.23 1.25
Microbial mass (g/kg DM) 11.51 11.18 10.95 10.43 9.91 9.52
SCFA (µM) 598.44a 594.35a 591.84a 588.56a 566.45b 543.05c