醋酸酸化处理日粮对断奶仔猪生长性能和健康状况的影响

Effects of Acidized Ration with Acetic Acid on Performance and Healthy Status in Weaned Piglets

选择20日龄“杜长大”杂交断奶仔猪60头，按照体质量相近、性别比例一致的原则分为4个组，试验期为30d。研究结果表明，饲喂pH值分别为3．0，4．0，5．0的酸化日粮2，3和4组的末质量和平均13增质量显著高于对照1组（P〈0．05），且与对照组相比，使用醋酸处理日粮后断奶仔猪的平均日增质量（2，3，4组）分别提高了22．22％，30．41％，16．08％（P〈0．05）；2，3，4组的发病率和死亡率显著低于对照1组（P〈0．05），且与对照组相比，使用醋酸处理日粮后断奶仔猪的发病率（2，3，4组）分别降低了300．00％，699．55％，166．65％（P〈0．05）。说明使用醋酸处理断奶仔猪日粮，将pH值调为3．0～4．0时，对提高日增质量和健康状况具有良好的效果。

This study was conducted to evaluate the effects of acidized ration with acetic acid on performance and healthy status in weaned piglets. Sixty Duroc x Youkshire x Landrace crossbred 20-day-old weaned pigs were randomly allotted to 4 groups. The results showed as follow： The final weight and average daily gain of group 2, 3 and 4, fed with acidized ration of pH 3.0, 4.0 and 5.0, were significantly higher than contral group 1 （P 〈 0.05 ）. Compared with the control group, average daily gain of piglets fed aeidized ration with acetic acid in group 2, 3 and 4 was increased by 22.22%, 30.41% and 16.08%（P 〈 0.05 ）, respectively; morbility and mortality of group 2, 3 and 4 were significantly lower than group 1 （P 〈 0.05 ）. Compared with the control group, morbility of piglets fed aeidized ration with acetic acid was decreased by 300.00%, 699.55% and 166.65%（P 〈 0.05 ）, respectively. The ~suits suggested that acidized ration with acetic acid （pH 3.0-4.0） had a beneficial effect to weight gain and healthy status.