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| Ingerslev, Hans-Christian; Dalsgaard, Inger; Jørgensen, Louise von Gersdorff; Madsen, Lone. |
| In recent years it has become more and more evident that the bacterial flora in the gut of warm-blooded animals modulates physiological processes and the immunological status of the host. Besides effects on growth parameters, commensal intestinal bacteria balance the immune system and prevent colonization of pathogenic bacteria. The question is if the gut microbiota is also important in lower vertebrates such as fish? Is the microbiota related to the diet type and does it play a protective role in connection to pathogenic challenge? To examine these questions rainbow trout fry were fed two different diets of either a marine or vegetable origin from first feeding and onwards. At a size of about four gram the fish were bath challenged by Yersinia ruckeri... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Feeding and growth; Health and welfare; Denmark. |
| Ano: 2013 |
URL: http://orgprints.org/24227/9/24227.pdf |
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| Ingerslev, Hans-Christian; Dalsgaard, Inger; Jørgensen, Louise von Gersdorff; Madsen, Lone. |
| In warm-blooded animals such as humans and pigs the intestinal microbial composition is dependent on the type of ingested diet. It is known that it also influences the immune system and prevent colonization of pathogenic bacteria. The question is if the gut microbiota has the same impact in lower vertebrates such as fish? To examine this rainbow trout fry were fed two different diets of either a marine or vegetable origin. At a size of about four gram a subset of the fish was bath challenged by Yersinia ruckeri serotype O1 and intestines were then sampled 5 days post challenge from challenged fish (n = 40) and non-challenged control fish (n = 40). Subsequent metagenomic examination based on the 16S rDNA gene was then performed using the Illumina HiSeq... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Feeding and growth; Health and welfare; Denmark. |
| Ano: 2013 |
URL: http://orgprints.org/24228/3/24228.pdf |
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| Ingerslev, Hans-Christian; Strube, M. Lenz; Jørgensen, Louise von Gersdorff; Dalsgaard, Inger; Boye, Mette; Madsen, Lone. |
| This study investigated the influence of the rainbow trout (Oncorhynchus mykiss) commensal intestinal microbiota in connection to an experimental Yersina ruckeri infection, the causative agent of enteric redmouth disease. One marine and one plant diet was administered to two different groups of rainbow trout. The plant-based diet gave rise to an intestinal microbiota dominated by the genera Streptococcus, Leuconostoc and Weissella from phylum Firmicutes whereas phylum Proteobacteria/Bacteroidetes/Actinobacteria dominated the community in the marine fed fish. In connection to the Y. ruckeri bath challenge there was no effect of the diet type on the cumulative survival, but the number of Y. ruckeri positive fish as measured by plate count and the number of... |
| Tipo: Journal paper |
Palavras-chave: Feeding and growth; Health and welfare. |
| Ano: 2014 |
URL: http://orgprints.org/27356/7/27356.pdf |
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| Ingerslev, Hans-Christian; Dalsgaard, Inger; Jørgensen, Louise von Gersdorff; Madsen, Lone. |
| In recent years it has become more and more evident that the bacterial flora in the gut of warm-blooded animals modulates physiological processes and the immunological status of the host. Besides effects on growth parameters, commensal intestinal bacteria balance the immune system and prevent colonization of pathogenic bacteria. The question is if the gut microbiota is also important in lower vertebrates such as fish? And does it play a role in connection to pathogenic challenge? To examine these questions rainbow trout fry were fed two different diets of either a marine or vegetable origin directly after first feeding. At a size of about four gram the fish were bath challenged by Yersinia ruckeri and intestines were then sampled 5 and 18 days post... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Feeding and growth; Health and welfare. |
| Ano: 2013 |
URL: http://orgprints.org/24806/3/24806.pdf |
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| Madsen, Lone; Ingerslev, Hans-Christian; Dalsgaard, Inger; Boye, Mette; Buchmann, Kurt; Chettri, Jiwan K.; Jørgensen, Louise von Gersdorff; Lauritsen, Anne Hjørngaard; Henriksen, Niels Henrik. |
| With respect to rainbow trout, the OPTIFISH project has shown that feed composition is more important than whether the feed are of organic or conventional origin. |
| Tipo: Newspaper or magazine article |
Palavras-chave: Feeding and growth; Health and welfare. |
| Ano: 2015 |
URL: http://orgprints.org/28102/6/28102.pdf |
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