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(a) Ratio bacteria/protozoa, (b) methanogens/protozoa and (c) methanogens/bacteria in different rumen protozoal fractions obtained from holotrich-monofaunated (H60 and H20) and totally faunated sheep (F80, F60, F45, F35, F20, F5 and F < 5) using different nylon meshes (80, 60, 45, 35, 20 and 5 μm pore size). Data were log10-transformed to attain normality. Bars with different letters (a, b, c, d, e) of the same colour differ (P < 0.05).
