Fiems L O, Cottyn B G, Boucque C V, Vanacker J M, Buysse F X
National Institute for Animal Nutrition, Agricultural Research Centre-Ghent, Melle-Gontrode, Belgium.
Arch Tierernahr. 1990 May-Jun;40(5-6):483-91. doi: 10.1080/17450399009421081.
Three experiments were conducted to investigate the effect of virginiamycin. Digestibility was determined with wethers, fed a diet of 0.65 maize silage and 0.35 concentrate on a dry matter basis (Experiment I) or a complete dry feed (Experiment II) at maintenance, and with growing bulls fed a maize silage diet ad libitum supplemented with 7.5 g concentrate per kg live weight (Experiment III). Virginiamycin was incorporated at 0 or 65 ppm in the concentrate and 0 or 25 ppm in the complete dry feed. No significant effect on dry or organic matter digestibility was observed, although digestibilities of protein and ether extract were reduced by virginiamycin in experiments I and II, respectively. Rumen fermentation was studied in experiments I and II. Virginiamycin increased acetic acid concentration and reduced butyric acid concentration in experiment I, but exerted no significant effect in experiment II. An interaction between diet type and virginiamycin was found for the C2/C3 ratio. Nitrogen balance, measured in experiment III, was not affected by virginiamycin.
进行了三项试验以研究维吉尼亚霉素的作用。采用阉羊测定消化率，在维持状态下，按干物质计，给阉羊饲喂含0.65玉米青贮料和0.35精料的日粮（试验I）或完全干饲料（试验II），给生长公牛随意饲喂玉米青贮料日粮，每千克活重补充7.5克精料（试验III）。在精料中添加0或65 ppm的维吉尼亚霉素，在完全干饲料中添加0或25 ppm的维吉尼亚霉素。尽管在试验I和试验II中，维吉尼亚霉素分别降低了蛋白质和乙醚提取物的消化率，但未观察到对干物质或有机物消化率有显著影响。在试验I和试验II中研究了瘤胃发酵。在试验I中，维吉尼亚霉素增加了乙酸浓度，降低了丁酸浓度，但在试验II中未产生显著影响。发现日粮类型和维吉尼亚霉素之间对C2/C3比例存在交互作用。试验III中测定的氮平衡不受维吉尼亚霉素影响。
