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http://dx.doi.org/10.14405/kjvr.2013.53.2.103

The dairy calf mortality : the causes of calf death during ten years at a large dairy farm in Korea  

Hur, Tai-Young (National Institute of Animal Science, RDA)
Jung, Young-Hun (National Institute of Animal Science, RDA)
Choe, Chang-Yong (National Institute of Animal Science, RDA)
Cho, Yong-Il (National Institute of Animal Science, RDA)
Kang, Seog-Jin (National Institute of Animal Science, RDA)
Lee, Hyun-June (National Institute of Animal Science, RDA)
Ki, Kwang-Seok (National Institute of Animal Science, RDA)
Baek, Kwang-Soo (National Institute of Animal Science, RDA)
Suh, Guk-Hyun (College of Veterinary Medicine, Chonnam National University)
Publication Information
Korean Journal of Veterinary Research / v.53, no.2, 2013 , pp. 103-108 More about this Journal
Abstract
The objective of this study was to investigate the calf death and analyse the causes of the mortality by based on medical records and autopsy findings during 10 years in a large dairy farm. Total of 1,361 calf born and 146 calf dead during the invested period. Mortality rate was 10.7% and showed the big difference by year-specific mortality from 2.8% (4 calves) to 19.2% (28 calves). The highest rate of mortality was 1 week age (18.5%, 27 calves) and followed by 2 week age (11.6%, 17 calves) and mortality of more old calf tended to be reduced. The death less than 4 weeks and 8 weeks of age of the entire mortality accounted for 41.1% (60/146 calves) and 70.0% (102/146 calves), respectively. Causes of calf death were digestive diseases (53.4%), respiratory diseases (17.1%), musculoskeletal disease (8.2%), and systemic disease (8.2%) in order. Specific causes of calf death was highest in enteritis (43.2%), followed by pneumonia (14.4%), sepsis (8.2%) and fractures (3.4%). Seasonally, most of calf death happened in winter (48.6%) and then fall (21.2%). This results showed that enteritis and pneumonia are the main reason of calf death but other reasons were involved in calf death on the based on autopsy finding. On going research relating factors of calf mortality is needed.
Keywords
autopsy; dairy calf; medical record; mortality;
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