الفهرس 
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Abstract
The present study was carried out at the Nutrition Laboratory, Department of Animal Production, Faculty of Agricultural, Menoufia University in order to study the effect of aerobic fungal (Trichoderma harzianum) and yeast (Saccharomyces cerevisiae D-47) inoculation on silage chemical composition, fermentation characteristics and in vitro digestibility. Results are:
1- Treatments had significant effect on CP. Crude protein content was 8.11, 9.32, 9.15 and 9.08% for control, Y, T and both Y+T, respectively.
2- Ensiling time significantly increased CP content in a positive linear trend with the ensiling times.
3- The treated silages increased CP which means that the ensiling environment was good and silage quality was better.
4- Crude fiber significantly decreased from 21.62 in the control to 19.41, 19.52 and 19.37% in Y, T and Y+T inoculants.
5- Along with time of ensiling CF decreased while no interaction was observed between inoculant and time.
6- Treatments had significant increase in NFE from 61.36% in control up to 63.65, 63.48 and 63.45% for inoculates Y, T and Y+T, respectively. Ensiling time show significantly.
7- Neutral detergent fiber significantly decreased from 47.64 in the control to 46.63, 46.86 and 45.68% in Y, T and Y+T inoculants, respectively.
8- Inoculants decreased pH significantly from 5.09 in control to 4.64, 4.69 and 4.54 for Y, T and Y+T, respectively.
9- Lactic acid concentration in silages of control was 36.75 g/kg DM. Treating silages with inoculant yeast (Y), trichoderma (T) led to an increase (P<0.001) in lactic acid concentration being 39.5 and 38.99 g/kg DM, respectively. The best value was that of Y+T treatment (40.77g/kg DM).
10- There was a significant (P<0.001) effect on total bacteria (log10 cfu/g DM), lactic acid bacteria (log10 cfu/g DM) and total yeasts (log10 cfu/g DM). Treating silages with inoculant increased total bacteria (5.51, 7.69, 7.69 and 7.81 log10 cfu/g DM) for the control, Y, T and Y+T, respectively.
11- Inoculants increased both IVDMD and IVOMD significantly; the best values were that of corn silage inoculated with both yeast + Trichoderma.