The effect of preservatives based on propionic acid on the fermentation and aerobic stability of corn silage and a total mixed ration
The effect of preservatives based on propionic acid on the fermentation and aerobic stability of corn silage and a total mixed ration
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DOI：
10.3168/jds.s0022-0302(98)75695-4
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发表时间：
1998-05-01
影响因子：
3.5
通讯作者：
Glancey, JL
中科院分区：
文献类型：
--
作者：
Kung, L;Sheperd, AC;Glancey, JL
连续3年，全株玉米青贮在实验室筒仓低百分比的青贮饲料防腐剂，其主要活性成分是丙酸。在青贮饲料之前，以鲜饲料重量的0.1%至0.2%的比率将防腐剂添加到饲料中。在所有3年，治疗发酵终产物的影响较小，除了丙酸的浓度更大，因为它的添加。平均低和高百分比的防腐剂增加有氧稳定性的处理青贮饲料19和57小时，分别在实验1和17和38小时，分别在实验2。在实验3中，通过防腐剂（0.2%添加），有氧稳定性提高>90小时。在一项哺乳研究中，将总混合口粮（46%干物质）在不含或含（0.2%或0.3%）稳定剂的情况下混合，该稳定剂旨在防止饲料库中的腐败。高剂量导致在饲料槽中24小时后具有较低pH和温度的动物。然而，干物质摄入量和产奶量不受治疗。化学防腐剂的基础上添加丙酸在低利率不影响发酵，但有效地减少玉米青贮饲料和总混合日粮中的加热。
For 3 successive yr, whole-plant corn was ensiled in laboratory silos with low percentages of silage preservatives, the primary active ingredient of which was propionic acid. Preservatives were added to forage just prior to ensiling at rates of 0.1 to 0.2% of the fresh forage weight. In all 3 yr, treatments had minor effects on fermentation end products, except that the concentration of propionic acid was greater because of its addition. The mean low and high percentages of preservatives increased aerobic stability of the treated silages by 19 and 57 h, respectively, in Experiment 1 and by 17 and 38 h, respectively, in Experiment 2. In Experiment 3, aerobic stability was improved by >90 h by preservatives (0.2% addition). In a lactation study, a total mixed ration (46% dry matter) was mixed without or with (0.2 or 0.3%) a stabilizer that was designed to prevent spoilage in the feed bunk. The high dose resulted in orts with a lower pH and temperature after 24 h in the feed bunk. However, dry matter intake and milk production were unaffected by treatments. Chemical preservatives based on propionic acid added at low rates did not affect fermentation but were effective in the reduction of heating in corn silage and in a total mixed ration.