Modeling the Effect of Lameness on Culling of Dairy Cows in Tehran Province
نویسندگان
چکیده
Objective-To assess the effect of lameness on culling of dairy cows in Tehran province. DesignHistorical cohort study. Study population and procedures7067 firstand second-parity Holstein dairy cows that calved from March, 21 2007 to March, 2
منابع مشابه
Modeling the Effect of Lameness on Culling of Dairy Cows in Tehran Province
Objective-To assess the effect of lameness on culling of dairy cows in Tehran province. Design- Historical cohort study. Study population and procedures- 7067 first- and second-parity Holstein dairy cows that calved from March, 21 2007 to March, 20 2008 were until next calving or culling. Logistic regression was conducted data. Results-The overall lactational culling rate for eligible cows i...
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