Effect of Calving Difficulties and Calf Mortality on Functional Longevity in Polish Holstein-Friesian Cows

Longevity is one of the functional traits that considerably affect dairy herd profitability. A Weibull proportional hazards model was used to evaluate the impact of difficult calvings and calf stillbirths on cow functional longevity, defined as length of productive life corrected for milk production...

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Bibliographic Details
Main Authors: Małgorzata Morek-Kopeć, Andrzej Zarnecki, Ewa Ptak, Agnieszka Otwinowska-Mindur
Format: Article
Language:English
Published: MDPI AG 2021-09-01
Series:Animals
Subjects:
Online Access:https://www.mdpi.com/2076-2615/11/10/2792