Development of the Intestinal Microbiota of Dairy Calves and Changes Associated with Cryptosporidium spp. Infection in Brazil
spp. is one of the most important pathogens infecting nursing calves worldwide. This study aimed to investigate the intestinal microbiota of dairy calves during the first month of life and the impact of diarrhea caused by on a Brazilian farm. Fecal samples from 30 calves were collected during the fi...
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Published in | Microorganisms (Basel) Vol. 12; no. 9; p. 1744 |
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Main Authors | , , , , , , |
Format | Journal Article |
Language | English |
Published |
Switzerland
MDPI AG
01.09.2024
MDPI |
Subjects | |
Online Access | Get full text |
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Summary: | spp. is one of the most important pathogens infecting nursing calves worldwide. This study aimed to investigate the intestinal microbiota of dairy calves during the first month of life and the impact of diarrhea caused by
on a Brazilian farm. Fecal samples from 30 calves were collected during the first month of life, and fecal scores were recorded. Samples from the second, third, and fourth days of life were analyzed by DNA sequencing of the 16S rRNA gene. In addition, samples of sixteen calves positive for
spp. were retrospectively chosen according to the development of diarrhea: four and two days before diarrhea, at the onset of diarrhea, after four days of diarrhea, at the end of diarrhea, and after six days of diarrhea resolution. Diarrhea was observed in all calves (100%), starting at day 5 of life, and all calves tested positive for
in at least one sample. The microbiota richness increased with age but was retarded by diarrhea. Compositional changes associated with
infection included increases in
, and
, as well as decreases in
and Lachnospiraceae. In conclusion,
infection has the potential to decrease richness and change the composition of the intestinal microbiota of dairy calves. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 2076-2607 2076-2607 |
DOI: | 10.3390/microorganisms12091744 |