期刊
RESEARCH IN VETERINARY SCIENCE
卷 92, 期 2, 页码 342-349出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.rvsc.2011.03.017
关键词
Calves; Lactic acid bacteria; Probiotic; Prevention; Diarrhea
资金
- ANPCYT (Agencia Nacional de Promocion Cientifica y Tecnologica Agencia, Argentina) [PICT 0543]
- CONICET (Consejo Nacional de Investigaciones Cientificas y Tecnicas, Argentina) [PIP 0632]
Lactic acid bacteria (LAB) are widely used as probiotics in humans and animals to restore the ecological balance of different mucosa. They help in the physiological functions of newborn calves that are susceptible to a variety of syndromes. The criteria for the selection of strains for the design of probiotic products are not available. Based in the host-specificity of the indigenous microbiota, 96 LAB isolates from faeces and oral cavity of calves were obtained. The surface properties were screened showing a small number of highly hydrophobic or autoagglutinating isolates. Also, a group produced H2O2 and were able to inhibit pathogens, and two strains were bacteriocin-producers. Some grew at very low pH and high bile concentrations. The strains sharing some of the specific properties evaluated were identified genetically, assayed their compatibility and exopolysaccharide production. The results allow going further in the establishment of criteria to select strains to be included in a multi-strain-probiotic-product to be further assayed in animals. (C) 2011 Elsevier Ltd. All rights reserved.
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