Abstract
The role of microbes in fiber degradation and the relations among the microbes in sheep rumen were explored by in vivo elimination of fungi. The experiment was conducted on 6 Mongolian sheep with fistulae approximately 1.5 years old (35kg). The sheep were randomly divided into two groups, treatment group (n=3) and control group (n=3). The rumen fluids were collected from the rumen though fistulae. The results showed that the total numbers of bacteria, cellulolytic bacteria and protozoa in the rumen were significantly increased (P<0.05) after fungus elimination. Among the three main cellulolytic bacteria, the number of R.flavefaciens and F.succinogenes increased significant (P<0.05). Elimination of fungi significantly reduced the degradation of DM, NDF and ADF, and the activity of CMCase in sheep rumen (P<0.05). The number of total rumen bacteria and fungi detected by real-time PCR were about 10 times and 1,000 times higher than that of the traditional anaerobic culture method, suggesting that real-time PCR is superior to the traditional roller tube culture method.
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