In-vitro and in-vivo studies on most common straws in Egypt after differed treatments to improve its nutritive value fed to ossimi rams

الملخص EN

The aim of this study was to determine the in-vitro dry matter disappearance (IN-VDMD % ) of wheat straw (WS), rice straw (RS) and soy bean straw (SBS) before and after treatment with urea (U), molasses (M), yeast(Y) and combinations of these ingredients.

Five treatments nominated as T1 (Control), T2 (T1+U), T3 (T1+U+M), T4 (T1+U+ Y) and T5 (T1+U+M+Y) were conducted on each straw type.

The IN-VDMD% was significantly (P<0.01) higher for SBS than other roughage sources in all treatments.

Treatment T5 showed significantly (P<0.01) higher IN-VDMD% value than other treatments.

The values being 47.49, 46.60 and 49.97% for WS, RS and SBS treated with U+M+Y respectively.

As the IN-VDMD % of SBS had the highest values, it was used in in–vivo digestibility experiment on Ossimi rams.

Results of the SBS digestibility cleared that treatment with urea (U), molasses (M), yeast (Y) and supplemented with fat (F) were significantly higher (P<0.01) than other treatments in digestibility coefficients and feeding value ( TDN).

The TDN values were 37.96, 42.67, 43.84 and 49.92% for SBS untreated, treated with U and M, treated with U, M, Y and treated with U, M, Y and supplemented with fat respectively.

The figures were significantly different (P<0.01).

In conclusion, each treatment tested increased the IN-VDMD % of all roughages used.

Treatment of WS, RS and SBS with U, M and Y was the most effective treatment.

Digestibility coefficients and TDN of SBS treated with U, M, Y and supplemented with fat were Promising for future application.