绵羊李斯特菌病。从青贮草料中分离出单核细胞增生李斯特菌。
Listeriosis in sheep. Isolation of Listeria monocytogenes from grass silage.
作者信息
Grønstøl H
出版信息
Acta Vet Scand. 1979;20(4):492-7. doi: 10.1186/BF03546576.
Abstract
Two hundred and ninety-one grass silage samples from 113 farms with recent outbreaks of listeriosis were examined for the presence of Listeria monocytogenes (Lm). The frequency of Lm isolations increased with increasing pH. Lm was isolated from 22 % of the samples with pH < 4, from 37 with pH 4–5 and from 56 % with pH > 5. Formic acid had been used as additive. A similar investigation was carried out on 32 samples from a farm with no outbreak of listeriosis during the investigation period. Lm was isolated from 9 samples.
摘要
对来自113个近期爆发李斯特菌病农场的291份青贮饲料样本进行了单核细胞增生李斯特菌（Lm）检测。Lm的分离频率随pH值升高而增加。pH值小于4的样本中22%分离出Lm，pH值为4 - 5的样本中有37%，pH值大于5的样本中有56%。甲酸曾被用作添加剂。对一个在调查期间未爆发李斯特菌病的农场的32份样本进行了类似调查。从9份样本中分离出了Lm。
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