Estimation of genetic and environmental parameters of lifetime production traits and longevity in Holstein-Friesian cows
This study was undertaken to evaluate the genetic and environmental aspects of lifetime production and longevity traits of dairy cattle. Canadian Record of Performance (ROP) data of 51,599 Holstein cows which first freshened from September, 1957 through February, 1966 were used, thus allowing cows t...
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| Language: | English |
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2010
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| Online Access: | http://hdl.handle.net/2429/22534 |