Journal
RESEARCH IN VETERINARY SCIENCE
Volume 136, Issue -, Pages 561-586Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.rvsc.2021.04.021
Keywords
Subclinical mastitis; Clinical mastitis; Prevalence; World; India; Meta-analysis
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This study calculated the prevalence of subclinical mastitis (SCM) and clinical mastitis (CM) in various countries, finding a higher prevalence of SCM compared to CM worldwide, with both having high rates in India. The research suggests the importance of addressing SCM and CM through improved dairy management practices to benefit dairy farmers globally.
In the present study, subclinical mastitis (SCM) and clinical mastitis (CM) prevalence for various countries in the World were calculated by using online and offline databases. The SCM and CM prevalence studies reported during 1967-2019 were collected, reviewed, and a meta-analysis was done in R-Software. A total of 222 and 150 studies from the World and 103 and 37 studies from India on SCM and CM, respectively were included. The pooled prevalence of SCM and CM were 42% [Confidence Interval (CI) 38-45%, Prediction Interval (PI) 10-83%] and 15% [CI 12-19%, PI 1-81%] in the World respectively, 45% [CI 40-49%, PI 11-84%] and 18% [CI 14-23%, PI 3-60%] in India respectively. Continent-wise analysis indicated a higher prevalence of SCM in North America and CM in Europe and among the countries, a higher SCM prevalence in Uganda and CM in the United Kingdom was observed. Further, species-wise indicated a higher SCM and CM prevalence in buffaloes of the World than the cattle. Based on method-wise, SCM and CM prevalence were high in somatic cell count and clinical examination, respectively in the World. The SCM prevalence was higher than CM and indicated the importance of SCM in dairy cattle. This might result in low milk productivity in dairying and may set off losses to dairy farmers. Hence, there is an urgent need to reduce the SCM and CM prevalence by implementing scientific dairy management, good feeding practices, and timely therapeutic interventions for increasing the benefits from dairying to the farmers in the World.
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