September 10, 2025Animal Breeding and GeneticsOpen Access

The Use of Intra-Line Selection and Line Crossing in Dairy Cattle Breeding

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Retrospective analysis reveals line crossing significantly improves milk yield in Holstein cattle, suggesting efficient breeding techniques.

First-calf cows from the Elevation line averaged a milk yield of 8272 kg, outperforming many inter-line crosses.
The cross of Bell × J. Besna yielded the highest milk output of 8724 kg, highlighting effective genetic combinations.
Intra-line selection of the Chief line showed potential despite lower yields compared to inter-line crosses, with differences of 420 to 594 kg.
Monitoring linear breeding options can lead to enhanced productivity traits in dairy cattle, identifying the most effective breeding methods.

Khmelnychyi et al. (2025) studied this question.

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Retrospective analysis reveals line crossing significantly improves milk yield in Holstein cattle, suggesting efficient breeding techniques.