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Archives Animal Breeding Archiv Tierzucht
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This study aimed to use survival analysis and examine the factors affecting functional herd life (FHL) of cows in Isfahan using the Weibull proportional risk model in Isfahan to estimate of breeding values for functional herd life. The SC, milk production, age at first calving and milk period showed significant effects on LPL (P < 0.001) according to the likelihood ratio test. Although there were some fluctuations in genetic trends, an overall increase was observed which leads to a longer FHL
Articles | Volume 59, issue 3
Arch. Anim. Breed., 59, 387–393, 2016
https://doi.org/10.5194/aab-59-387-2016
Arch. Anim. Breed., 59, 387–393, 2016
https://doi.org/10.5194/aab-59-387-2016

Original study 13 Sep 2016

Original study | 13 Sep 2016

Genetic analysis of productive life length in Holstein dairy cows using Weibull proportional risk model

Hamed Amirpour Najafabadi et al.

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Latest update: 20 Jan 2021
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Short summary
This study aimed to use survival analysis and examine the factors affecting functional herd life (FHL) of cows in Isfahan using the Weibull proportional risk model in Isfahan to estimate of breeding values for functional herd life. The SC, milk production, age at first calving and milk period showed significant effects on LPL (P < 0.001) according to the likelihood ratio test. Although there were some fluctuations in genetic trends, an overall increase was observed which leads to a longer FHL
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