摘要
Different starch components were added to rations with maize silage measuring the influence of the supplements on the digestibility and energy content of maize silage in cattle (n = 36) and sheep (n = 36). The starch‐rich components maize, wheat, barley, oat, cassava meal and potatoe starch were added to the total rations on average of 33%. All supplements were ground (sieve of 2.5 mm), additionally, wheat was added in extruded or crushed form. All rations including the control ration without starch components were supplemented with soybean meal to an average crude protein content of 12.4% DM. The mean starch content of the total rations was 42% DM. The supplementation of maize silage with the different starch components increased the digestibility of the organic matter of all rations on average only slightly from 77% to 78% in cattle, while the mean digestibility in sheep rised from 74% to 79% more pronounced. However, the influence of the different starch components on the digestibility was similiar for both ruminants. The supplementation with the ground, crushed or extruded wheat, with barley and with oats impaired the digestibility of the crude fibre of the total ration and of the maize silage, respectively. Therefore, the digestibility of the organic matter of maize silage was reduced and the energy content decreased by about 6% in comparison to the control ration without starch supplementation. However, the supplementation with maize, cassava meal or pota‐toe starch had no negative effects on the digestiblity and energy content of maize silage.
摘要译文
将不同的淀粉组分添加到玉米青贮饲料的日粮中，测量补充剂对牛（n = 36）和绵羊（n = 36）中玉米青贮饲料的消化率和能量含量的影响。富含淀粉的成分玉米，小麦，大麦，燕麦，木薯粉和马铃薯淀粉加入到总日粮中平均为33％。将所有补充剂研磨（2.5mm筛），另外，以挤出或压碎的形式加入小麦。包括没有淀粉组分的对照日粮的所有日粮都补充有豆粕，平均粗蛋白质含量为12.4％DM。总日粮的平均淀粉含量为42％DM。玉米青贮饲料与不同淀粉成分的补充使得所有日粮中有机物的消化率平均仅从牛的77％上升到78％，而绵羊的平均消化率从74％上升到79％更为显着。然而，不同淀粉组分对消化率的影响与两种反刍动物相似。用大麦和燕麦补充研磨，压碎或挤压的小麦，分别损害了总日粮和玉米青贮饲料的粗纤维的消化率。因此，与没有淀粉补充的对照日粮相比，玉米青贮饲料的有机物的消化率降低，能量含量降低约6％。然而，补充玉米，木薯粉或pota-toe淀粉对玉米青贮饲料的消化率和能量含量没有负面影响。
F.J. Schwarz [1];E.J. Pex [1];M. Kirchgessner [1]. Influence of starch‐rich feedstuffs on digestibility and energy content of maize silage in cattle and sheep[J]. Archiv für Tierernaehrung, 1996,49(4): 349-362