Acta Univ. Agric. Silvic. Mendelianae Brun. 2019, 67, 1245-1251

https://doi.org/10.11118/actaun201967051245
Published online 2019-10-31

Genomic Breeding Values for Claw Diseases/Disorders in Czech Holstein Cows

Ludmila Zavadilová, Eva Kašná, Zuzana Krupová

Institute of Animal Science, Přátelství 815, 104 00 Prague – Uhříněves, Czech Republic

Received August 12, 2019
Accepted September 18, 2019

Genomic breeding values (GEBV) were predicted for claw diseases/disorders in Holstein cows. The data sets included 6,498, 6,641 and 16,208 cows for the three groups of analysed disorders. The analysed traits were infectious diseases (ID), including digital and interdigital dermatitis and interdigital phlegmon, and non-infectious diseases (NID), including ulcers, white line disease, horn fissures, and double sole and overall claw disease (OCD), comprising all recorded disorders. Claw diseases/disorders were defined as 0/1 occurrence per lactation. Linear animal models were employed for prediction of conventional breeding values (BV) and genomic breeding values (GEBV), including the random additive genetic effect of animal and the permanent environmental effect of cow and fixed effects of parity, herd, year and month of calving. Both high and intermediate weights (80% and 50%, respectively) of genomic information were employed for GEBV50 and GEBV80 prediction. The estimated heritability for ID was 3.47%, whereas that for NID 4.61% and for OCD was 2.29%. Approximate genetic correlations among claw diseases/disorders traits ranged from 19% (ID x NID) to 81% (NID x OCD). The correlations between predicted BV and GEBV50 (84–99%) were higher than those between BV and GEBV80 (70–98%). Reliability of breeding values was low for each claw disease/disorder (on average, 3.7 to 14.8%) and increased with the weight of genomic information employed.

Funding

The work was supported by the project of the National Agency for Agricultural Research QK1810253 and the institutional support MZE-RO0718 of the Ministry of Agriculture of the Czech Republic.

References

23 live references