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Publication type: Journal Article
Document type: Full Paper

Year: 2005

Author(s): Jugl-Chizzola, M; Spergser, J; Schilcher, F; Novak, J; Bucher, A; Gabler, C; Hagmüller, W; Zitterl-Eglseer, K

Title: Effects of Thymus vulgaris L. as feed additive in piglets and against haemolytic E. coli in vitro.

Source: Berl Munch Tierarztl Wochenschr. 2005; 118(11-12):495-501

Authors Vetmeduni Vienna:

Jugl-Chizzola Martina
Novak Johannes
Schilcher Franz
Spergser Joachim
Zitterl-Eglseer Karin

Vetmed Research Units
Institute of Animal Nutrition and Functional Plant Compounds
Institute of Microbiology
Institute of Pathology

Project(s): Thyme in the rearing of piglets

The aim of the study was to test Thymi herba (1.66% v/w essential oil with 39% p-cymene and 32% thymol) in the rearing period of piglets as feed additive. Therefore, two feeding trials were performed with piglet groups ranging from 17 to 22 animals each. Either 10 g of Thymi herba/kg feed (Thymi herba group), 10 mg flavophospholipol/kg feed (flavophospholipol group) or nothing (control group) was added to the animals" feed. No significant differences in the performance parameter daily weight gain among any groups were recorded. No differences concerning feed efficiency or isolation of haemolytic E. coli serotypes were shown. In addition, the antibacterial activity of the essential oil of Thymi herba against 39 haemolytic E. coli isolates from the same weaners was investigated in vitro by disk diffusion, minimum inhibitory concentration and bactericidal concentration testing. In contrast to the feeding results, the essential oil of the thyme batch fed showed antibacterial activity against all haemolytic E. coli investigated. This interesting antibacterial potential of Thymi herba prompts further investigations as to its value as feed additive.

Keywords Pubmed: Animal Feed*
Animals, Newborn
Escherichia coli/drug effects*
Escherichia coli/growth & development
Microbial Sensitivity Tests/veterinary
Plant Oils/administration & dosage
Plant Oils/pharmacology*
Random Allocation
Swine/growth & development*
Thymus Plant/chemistry*

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