维生素A对秸杆NDF瘤胃降解率的影响

The Effect of Molar Consistency of the Acetic acid and theDegradation of NDF of Stalk in the Rumen Feeding VA to steers

试验采用3×3拉丁方设计 ,肉牛日粮中维生素A含量分别为1180国际单位、18680国际单位和36180国际单位 ,通过对瘤胃挥发性脂肪酸浓度和玉米秸秆NDF降解率的测定 ,结果表明 :维生素A36180国际单位较维生素A1180国际单位组能显著提高瘤胃中乙酸浓度和玉米秸杆NDF有效降解率(p<0 05)。

Three stees(450kg Body Weight)were used in a 3×3 latin spuare design to investigate the effects of intra-rumen in feeding rations of VA1180IU,VA186800IU and VA5000IU by measure off the molar consistency of the acetic acidand the degradation of NDF of corn stalk.The results showed that the degradation of NDF of corn stalk significantly increased and the molar consistency of the acetic acid significantly increased too in the rumen fluid of steers by feeding rations of VA36180IU.