摘要
选择山梨酸钾、脱氢醋酸钠、苯甲酸钠、丙酸和丙酸钙5种防霉剂,分别以0.15%和0.3%的剂量添加到奶牛全混合日粮(total mixed ration,TMR)中进行7 d的贮存试验,测定防霉剂对TMR饲料贮存效果的影响。试验结果表明,添加脱氢醋酸钠和0.3%山梨酸钾组的TMR饲料在贮存期内没有发热产生,也未发生霉变,其它各防霉剂添加组从贮存第2天开始逐渐出现升温发霉现象。贮存第2天,添加丙酸、丙酸钙及0.15%苯甲酸钠组TMR饲料的含水量极显著低于对照组(P<0.01);贮存第3天和第5天,添加脱氢醋酸钠和添加0.3%山梨酸钾组TMR饲料的含水量高于对照组(P<0.05)。贮存过程中TMR饲料的粗蛋白质和粗脂肪均无明显变化。综合各项指标,TMR饲料中添加脱氢醋酸钠和山梨酸钾比苯甲酸钠、丙酸和丙酸钙有较好的防霉效果。
Abstract：Five mould inhibitors （potassium sorbate, sodium dehydroacetate, sodium benzoate, propionic acid and calcium propionate） were added to total mixed ration at rates of 0. 15% and 0. 30% of the fresh weight to examine their effect on preservation quality of TMR in a 7 day storage experiment. The results showed that TMR added 0.15% and 0.3% of sodium dehydroacetate or 0.3% of potassium sorbate remained a good quality and normal temperature during storage period. On the second day of the experiment, the moisture of TMR supplemented with 0.15% and 0.3% of propionic acid, 0.15% and 0.3% of calcium propionate and 0.15% of sodium benzoate was significantly lower than the control group （P〈0.05）. On the third and fifth day of the experiment, the moisture of TMR supplemented with 0.15% and 0.3% of sodium dehydroacetate and 0.3% of potassium sorbate was significantly higher than the control group （P〈0.05）. There was no significant difference among groups in crude protein and ether extract during the storage period （P〉0.05）. These results indicated that sodium dehydroacetate was the best one among mould inhibitors used in this experiment, with potassium sorbate taking second place.
出处
《中国畜牧兽医》
CAS
北大核心
2009年第9期5-9,共5页
China Animal Husbandry & Veterinary Medicine
基金
"十一五"国家科技支撑计划(2006BAD12B08)
公益性行业科研专项(Nyhyzx-07-036)
关键词
防霉剂
TMR
贮存
脱氢醋酸钠
山梨酸钾
mould inhibitors
total mixed ration
storage
sodium dehydroacetate
potassium sorbate
