| Popis: |
Alkali-treated whole rye grain (35 g NaOH/kg grain) and rolled rye grain were given to cows in diets with concentrate roughage ( C R ) ratios of 65:35 and 75:25. Alkali treatment tended to increase intake (by 13% for the 65:35 diet), but non-significantly. Milk yield and composition did not differ significantly among the four treatments. Alkali treatment of rye tended to increase the molar proportion of acetic acid and decrease that of propionic acid, although non-significantly. Apparent digestibility of dry matter, crude protein and energy, determined by the acid-insoluble ash (AIA) technique, did not differ significantly among treatments. In another trial, alkali treatment of rye grain for sheep resulted in no significant improvement in dry matter, energy or cellulose digestion, but alkali treatment of barley increased the digestibility of acid detergent fibre and cellulose. The present studies show a slight tendency for improvement with alkali treatment of whole rye grain, but further investigations are needed. |
