期刊
JOURNAL OF APPLIED MICROBIOLOGY
卷 132, 期 1, 页码 687-695出版社
OXFORD UNIV PRESS
DOI: 10.1111/jam.15204
关键词
Campylobacter jejuni; essential oils; medium-chain fatty acid; organic acid; poultry; water additive
资金
- Department of Agriculture, Food and the Marine [15F641]
This study demonstrates that organic acids, medium chain fatty acids, and essential oils can effectively reduce Campylobacter in vitro, but their use in vivo is hindered by negative effects on broiler performance.
Aims This research tested the anti-Campylobacter properties of organic acids (OA), medium chain fatty acids (MCFA) and essential oils (EO) in vitro and commenced in vivo suitability testing focused on broiler performance. Methods and Results Nine active compounds were tested at different concentrations and times against Campylobacter jejuni in sterile distilled water, Mueller Hinton broth and grower feed digestate (GFD). Sodium caprate (1.5%, v/v), thymol (0.25% and 2.5%, v/v), carvacrol (1.25%, v/v) and potassium sorbate (1.5%, v/v) each achieved C. jejuni reductions of >= 4.5 log(10) CFU per ml in GFD, the matrix most representative of the broiler gut, after 60 s. Similar reductions were achieved after 60 min with lactic acid (1.25%, v/v), formic acid (3.1%, v/v), sodium caprylate (1.5%, v/v) and carvacrol (1.25%, v/v). However, in vivo these compounds adversely affected broiler performance, resulting in dimished water intake and reduced weight. Conclusions OA, MFCA and EO based compounds are effective anti-Campylobacter treatments in laboratory model studies but cannot be applied in vivo. Significance and Impact of the Study This study illustrates that OAs, MCFAs and EOs can achieve significant reductions in Campylobacter in vitro but identifies a major issue, inhibition of broiler performance, preventing their use in practice.
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