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Table 3 Effects of different rosemary supplements on select rumen microbial groups (log10 rrs copies/g)

From: Dietary supplementation of Rosmarinus officinalis L. leaves in sheep affects the abundance of rumen methanogens and other microbial populations

  Diet SEM P-value
  CTR RL pellet RL EO   
Total Bacteria 11.03 11.01 10.89 11.01 0.06 0.1994
Archaea 8.86a 8.69b 8.64b 8.80a 0.05 <0.001
Protozoa 8.26ab 7.71b 7.97b 8.75a 0.15 <0.001
Prevotella spp. 9.92a 9.68b 9.72b 9.90a 0.12 <0.01
Fibrobacter succinogenes 6.86b 6.90ab 6.88b 7.00a 0.11 <0.001
Ruminococcus albus 7.62a 7.67a 7.27b 7.64a 0.16 <0.001
Ruminococcus flavefaciens 7.40ab 7.59a 7.59a 7.43ab 0.16 <0.05
Clostridium aminophilum 7.05a 7.16a 6.62b 7.11a 0.37 <0.001
  1. a,bMeans with different letters within a row differ significantly (P ≤ 0.05)
  2. CTR control; RL pellet: CTR plus 10 g/d of dried and ground rosemary leaves pelleted into concentrate; RL: CTR plus 10 g/d of dried and ground rosemary leaves; EO: CTR plus 7 g/d of rosemary essential oil adsorbed on an inert support; NS not significantly