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| Kayano, M.; Kadohira, M.; Stevenson, M. A.. |
| This was a retrospective cohort study using data from the insurance scheme provided by the Japanese Mutual Aid Association (NOSAI). The population of interest comprised all cattle born on NOSAI-client farms in the Japanese prefecture of Hokkaido, Japan for the period 1 April 2005-31 March 2009. The outcome of interest was whether or not at least one calf was stillborn, had died during delivery or died during the first 24 hours of life for a given calving event, termed first 24h mortality risk. A mixed-effects logistic regression model was developed to identify explanatory variables associated with first 24h mortality risk. The final data set comprised details of 1,281,737 calving events on a total of 5172 dairy herds from 19 NOSAI branches located... |
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Palavras-chave: Japan; Peri-natal mortality; Dairy; Multilevel modelling; Epidemiology. |
| Ano: 2016 |
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/4443 |
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