Dairy cow longevity is an essential economic trait that can supplement the breeding value of
production traits, which is related to the herd time and lifetime milk yield of dairy cows …

In the previous chapters, we discussed the way that the welfare of cattle can be affected by
how they are housed and fed as well as by the short-term procedures that are done to them …

Longevity is an economically important trait of dairy cattle for increasing the profitability of
dairy management. The reasons for culling can be either voluntary (primarily productivity) or …

The purposes of this study were 1) to investigate the heritability, reliability, and selection
response for survival traits following a Weibull frailty proportional hazard model; and 2) to …

Genetic correlations between longevity and conformation traits were estimated using data
on Czech Holstein cows first calved in the years 1993–2008. Longevity traits considered …

The aim of this study was to explore the impact of type traits on the functional survival of
Canadian Holstein cows using a Weibull proportional hazards model. The data set …

Relationships between conformation traits and functional longevity in Holstein cows were
evaluated using survival analysis. Functional longevity was defined as the number of days …

Survival analysis was used to study the effects of composite and descriptive linear type traits
on functional herd life of Quebec Holsteins. Functional herd life was defined as the length of …

The aim of this study was to infer phenotypic and genetic effects of health disorders on
longevity traits, considering Holstein dairy cow records from large-scale co-operator herds …

A proportional hazards model was used to investigate the phenotypic effect of traits other
than production (TOP) on true and functional longevity across purebred and crossbred …