Analysis of longevity in Slovenian holstein cattle | Analiza dolgozivosti pri crno-beli pasmi goveda v Sloveniji
2011
Potocnik, K.,, Ljubljana Univ. (Slovenia). Biotechnical Fac., Dept. of Animal Science | Gantner,V., Osijek Univ J.J. Strossmayer (Croatia) | Krsnik,J. | Stepec, M. | Logar, B., Agricultural institute of Slovenia (Slovenia) | Gorjanc, G.
The longevity of Slovenian Holstein population was analysed using survival analysis with a Weibull proportional hazard model. Data spanned the period between January 1991 and January 2010 for 116,200 cows from 3,891 herds. Longevity was described as the length of productive life - from first calving till culling or censoring. Records above the sixth lactation were censored to partially avoid prefe
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