Prevalence and risk factors for agents causing diarrhea (Coronavirus, Rotavirus, Cryptosporidium spp., Eimeria spp., and nematodes helminthes) according to age in dairy calves from Brazil.
Trop Anim Health Prod
; 52(2): 777-791, 2020 Mar.
Article
in English
| MEDLINE | ID: covidwho-124580
ABSTRACT
The present study attempted to verify the prevalence of and risk factors for diarrhea-causing agents in dairy calves from Brazil. Additionally, ages with a higher risk of occurrence for each agent were verified by means of the receiver operating characteristic (ROC) curve. The collections were performed on 39 farms, belonging to 29 municipalities located in eight states of Brazil. It was possible to conclude that the prevalence of Coronavirus, Rotavirus, Cryptosporidium spp., Eimeria spp., and nematodes was 7.20% (95% CI 4.54-9.78), 6.37% (95% CI 3.85-8.89), 51.52% (95% CI 45.26-55.57), 3.46% (95% CI 2.24-4.67), and 3.46% (95% CI 2.24-4.67), respectively. Ages with higher probabilities of occurrence of these diseases in calves were < 10, > 8, > 6, > 37, and > 36 days, respectively. Diarrhea occurred more significantly (P < 0.0001) in animals less than 21 days old and mainly on those receiving milk through automatic feeders (P < 0.001). Cryptosporidium spp. were a risk factor for the occurrence of Rotavirus, and vice versa (P = 0.0039) and presented a positive correlation with Coronavirus (P = 0.0089). Calves that drink water from rivers, streams, and ponds had a higher chance of being infected by Eimeria spp. (P < 0.0001), as well as developing infection by nematodes (P < 0.0001). The results found in this study highlight the importance of studying the agents of diarrhea together, once they act as coinfection where the losses triggered for the owners will involve some of these agents simultaneously.
Keywords
Full text:
Available
Collection:
International databases
Database:
MEDLINE
Main subject:
Rotavirus Infections
/
Cattle Diseases
/
Coronavirus Infections
/
Cryptosporidiosis
/
Diarrhea
/
Nematode Infections
Type of study:
Observational study
/
Prognostic study
Topics:
Long Covid
Limits:
Animals
Country/Region as subject:
South America
/
Brazil
Language:
English
Journal:
Trop Anim Health Prod
Year:
2020
Document Type:
Article
Affiliation country:
S11250-019-02069-9
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