Characterization of functional traits with focus on udder health in heifers with divergent paternally inherited haplotypes on BTA18.
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Authors
Heimes, ABrodhagen, J
Weikard, R
Hammon, H M
Meyerholz, M M
Petzl, W
Zerbe, H
Engelmann, S
Schmicke, M
Hoedemaker, M
Schuberth, H-J
Kühn, C
Issue Date
2019-07-11
Metadata
Show full item recordAbstract
BACKGROUND: A major challenge in modern medicine and animal husbandry is the issue of antimicrobial resistance. One approach to solving this potential medical hazard is the selection of farm animals with less susceptibility to infectious diseases. Recent advances in functional genome analysis and quantitative genetics have opened the horizon to apply genetic marker information for efficiently identifying animals with preferential predisposition regarding health traits. The current study characterizes functional traits with a focus on udder health in dairy heifers. The animals were selected for having inherited alternative paternal haplotypes for a genomic region on Bos taurus chromosome (BTA) 18 genetically associated with divergent susceptibility to longevity and animal health, particularly mastitis. RESULTS: In the first weeks of lactation, the q heifers which had inherited the unfavorable (q) paternal haplotype displayed a significantly higher number of udder quarters with very low somatic cell count (< 10,000 cells / ml) compared to their paternal half-sib sisters with the favorable (Q) paternal haplotype. This might result in impaired mammary gland sentinel function towards invading pathogens. Furthermore, across the course of the first lactation, there was indication that q half-sib heifers showed higher somatic cell counts, a surrogate trait for udder health, in whole milkings compared to their paternal half-sib sisters with the favorable (Q) paternal haplotype. Moreover, heifers with the haplotype Q had a higher feed intake and higher milk yield compared to those with the q haplotype. Results of this study indicate that differences in milk production and calculated energy balance per se are not the main drivers of the genetically determined differences between the BTA18 Q and q groups of heifers. CONCLUSIONS: The paternally inherited haplotype from a targeted BTA18 genomic region affect somatic cell count in udder quarters during the early postpartum period and might also contribute to further aspects of animal's health and performance traits due to indirect effects on feed intake and metabolism.Citation
BMC Vet Res. 2019 Jul 11;15(1):241. doi: 10.1186/s12917-019-1988-4.Publisher
BioMedCentralJournal
BMC Veterinary ResearchPubMed ID
31296208Type
ArticleLanguage
enISSN
1746-6148ae974a485f413a2113503eed53cd6c53
10.1186/s12917-019-1988-4
Scopus Count
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- Creative Commons
Except where otherwise noted, this item's license is described as Attribution-NonCommercial-ShareAlike 4.0 International
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