Dairy Cattle Infection with Bovine Rotavirus at Different Growth Stages and Its Impact on Health and Productivity
Xinfeng Hou, Zheng Niu, Shengru Wu, Qian Du, Guanglei Liu, Lichen Nie, Changlei Zhu, Yudong Qiu, Yong Huang, Yangchun Cao, Dewen Tong

TL;DR
This study examines bovine rotavirus infection in dairy cattle, showing it significantly impacts calf health and productivity, especially in milk-fed calves.
Contribution
The study identifies BRV prevalence in dairy farms in Hebei, China, and quantifies its impact on calf health and productivity metrics.
Findings
Milk-fed calves had the highest BRV infection rate at 14.58%.
BRV positivity was positively linked to calf morbidity and mortality but negatively linked to weight gain.
Older farms and autumn season showed higher BRV positivity rates.
Abstract
As an important infectious disease, bovine rotavirus (BRV) poses a serious threat to cows, especially milk-fed calves. BRV can cause severe diarrhea, dehydration, and even death in calves. Hebei, a large dairy farming province in China, has a considerable number of dairy cows, but the population positive rate of BRV in farms of different ages during large-scale farming in this region is not known, and its effect on the production indicators of morbidity, mortality, average daily weight gain (ADG), and average daily weight gain pass rate (ADGPR) of milk-fed calves is not clear. The results showed that milk-fed calves were the most susceptible group to BRV infection, and the positive rate was positively correlated with morbidity and mortality and negatively correlated with ADG and ADGPR. Therefore, strengthening the control of BRV is very important to reduce the loss of large-scale…
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Taxonomy
TopicsViral gastroenteritis research and epidemiology · Animal health and immunology · Congenital Anomalies and Fetal Surgery
