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Journal of Dairy Science
Article . 2024 . Peer-reviewed
License: CC BY
Data sources: Crossref
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Lirias
Article . 2024
License: CC BY
Data sources: Lirias
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Data-driven prediction of dairy cattle lifetime production and its use as a guideline to select surplus youngstock

Authors: Maarten Perneel; Stefaan De Smet; Jan Verwaeren;

Data-driven prediction of dairy cattle lifetime production and its use as a guideline to select surplus youngstock

Abstract

The lifetime production of dairy cows is a complex trait influenced not only by genetics but also by the environment in which a cow lives and the management practices of the farmer. Moreover, these influential factors show complex interactions with each other, making it difficult to reliably predict the lifetime production of individual animals at birth. However, because well-managed dairy farms often have a surplus of youngstock, reliable lifetime production predictions would offer the opportunity to make more substantiated decisions when selecting calves or heifers to sell. Therefore, using data from Dutch herds, we constructed a dataset capturing information on genetics, environment, and management practices to develop multiple machine learning models capable of predicting the lifetime production of dairy cattle soon after birth. We found that a coupling of trends observed at the country level with farm-specific models largely outperforms off-the-shelf approaches. At birth, our best model could explain up to 47% of the variance in lifetime production, a considerable improvement compared with linear regression on the breeding values supplemented with the average lifetime production at farm level, which could explain only 21.7% of the variance in lifetime production. Moreover, we demonstrated that surplus youngstock selection according to our model could more than double the surplus animal selection effect compared with the benchmark methodology, offering opportunities to significantly increase the average (future) potential lifetime production of the retained heifers. Assuming a static 20% surplus liveborn heifer scenario and random surplus animal selection as the default, our best model for surplus animal selection resulted in a 9.4% greater lifetime production in the retained animals compared with the current Dutch average lifetime production.

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Keywords

Agriculture and Food Sciences, Dairy & Animal Science, Breeding, 1ST LACTATION, AGE, 3003 Animal production, 0702 Animal Production, youngstock selection, Animals, Lactation, Veterinary Sciences, 3006 Food sciences, ASSOCIATIONS, Science & Technology, PARITY, MILKING 3 TIMES, Agriculture, PERFORMANCE, lifetime production, gene-environment interaction, ENVIRONMENT INTERACTION, Dairying, Mathematics and Statistics, machine learning, YIELD, Agriculture, Dairy & Animal Science, Food Science & Technology, gene- environment interaction, Cattle, Female, HEALTH, Life Sciences & Biomedicine, TRAITS, 0908 Food Sciences, 3009 Veterinary sciences

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    This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    3
    popularity
    This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
    Top 10%
    influence
    This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    Average
    impulse
    This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
    Average
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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
3
Top 10%
Average
Average
Green
gold