On the intake and digestibility of grain silage
1999
Kaldmae, H. | Metsaalt, M. | Vadi, M. (Estonian Agricultural Univ., Tartu (Estonia). Inst. Of Animalbreeding)
Three trials were carried out during the investigation. In the 1st trial the effect of oat grain silage preserved with Ensimax on intake and productivity were investigated. In the 2nd trial on rams, digestibility of barley grain silage, prepared with AIV 2000 was determined. In the 3rd trial dry matter digestibility of oat and barley grain silage and oat and barley meal was determined in vitro. On the basis of the results of the trials the following conclusions can be drawn: 1. Intake of crushed oat grain silage was good. That silage can substitute compound feedingstuffs in the case sunflower oil meal and minerals are added. 2. Oat grain silage increased milk production, mainly due to the increase of fat and protein content. 3. Increasing the proportion of barley grain silage in the ration favoured the digestibility of the ration. 4. Dry matter digestibility of barley grain silage was 76.5 per cent and that of organic matter was 78.0 per cent. Digestibility of barley grain silage crude protein was 77.8 per cent. 5. When feed digestibility is determined by in vitro methods, the coefficient of digestibility tends to be higher than that gained by in vivo digestion experiments
显示更多 [+] 显示较少 [-]