Boucqué C V, Fiems L O, Cottyn B G
National Institute for Animal Nutrition, Government Agricultural Research Centre-Ghent, Melle-Gontrode, Belgium.
Arch Tierernahr. 1994;46(1):93-101. doi: 10.1080/17450399409381760.
The use of beet for beef production after ensiling together with maize was studied in two experiments involving 112 and 114 White-blue bulls. In the first experiment maize silage (I) was compared with mixed silage of maize and fodder beet (II) or sugar beet (III) (ratio: 2/1, DM-basis). In the second experiment maize silage (I) was compared with mixed silage of 0.67 maize and 0.33 sugar beet (II) or maize silage and fresh sugar beet (ratio: 2/1, DM basis) (III) or fresh sugar beet and potatoes afterwards at 4% of the live weight and maize silage (IV). From day 113 onwards, mixed silage was also fed to group III and sugar beet were replaced by raw potatoes in group IV. The basic diet was always supplemented with concentrate at 0.75% of the live weight. In experiment 1 live weight gain was slightly but not significantly higher for the mixed silages, although daily net energy intake per kg metabolic weight was higher. Feed efficiency was not significantly different among groups. Mixed silages yielded more fat in the carcass. In the second experiment initial growth rates were not significantly affected by the use of sugar beet or mixed silages. Afterwards, they were increased in comparison with maize silage. Also in this experiment, daily net energy intake was increased by sugar beet, or by potatoes. Energy efficiency did not differ among groups. This experiment did not show significant differences for the carcass composition. However, EUROP fatness score was higher for diets containing one third sugar beet. Most meat quality parameters were not affected by the diets. Only the lightness was different between III and IV.
在两项分别涉及112头和114头白蓝公牛的试验中，研究了将甜菜与玉米青贮后用于牛肉生产的情况。在第一个试验中，将玉米青贮料（I）与玉米和饲料甜菜（II）或糖用甜菜（III）的混合青贮料（比例：2/1，干物质基础）进行比较。在第二个试验中，将玉米青贮料（I）与0.67玉米和0.33糖用甜菜的混合青贮料（II）或玉米青贮料与新鲜糖用甜菜（比例：2/1，干物质基础）（III）或之后按活重的4%添加新鲜糖用甜菜和土豆以及玉米青贮料（IV）进行比较。从第113天起，也给第三组饲喂混合青贮料，第四组用生土豆替代糖用甜菜。基础日粮始终按活重的0.75%补充精料。在试验1中，混合青贮料的活重增加略有提高但不显著，尽管每千克代谢体重的每日净能量摄入量较高。各组间饲料效率无显著差异。混合青贮料使胴体脂肪含量更高。在第二个试验中，使用糖用甜菜或混合青贮料对初始生长速度无显著影响。之后，与玉米青贮料相比生长速度有所提高。同样在这个试验中，糖用甜菜或土豆使每日净能量摄入量增加。各组间能量效率无差异。该试验在胴体组成方面未显示出显著差异。然而，含三分之一糖用甜菜的日粮的欧盟胴体脂肪评分更高。大多数肉质参数不受日粮影响。只有第三组和第四组之间的亮度不同。
