@article{Ha2015Gene,
 abstract = {The metabolic adaptation of dairy cows during the transition period has been studied intensively in the last decades. However, until now, only few studies have paid attention to the genetic aspects of this process. Here, we present the results of a gene-based mapping and pathway analysis with the measurements of three key metabolites, (1) non-esterified fatty acids (NEFA), (2) beta-hydroxybutyrate (BHBA) and (3) glucose, characterizing the metabolic adaptability of dairy cows before and after calving. In contrast to the conventional single-marker approach, we identify 99 significant and biologically sensible genes associated with at least one of the considered phenotypes and thus giving evidence for a genetic basis of the metabolic adaptability. Moreover, our results strongly suggest three pathways involved in the metabolism of steroids and lipids are potential candidates for the adaptive regulation of dairy cows in their early lactation. From our perspective, a closer investigation of our findings will lead to a step forward in understanding the variability in the metabolic adaptability of dairy cows in their early lactation.},
 author = {Ha, Ngoc-Thuy and Gross, Josef Johann and {van Dorland}, Annette and Tetens, Jens and Thaller, Georg and Schlather, Martin and Bruckmaier, Rupert and Simianer, Henner},
 year = {2015},
 title = {Gene-based mapping and pathway analysis of metabolic traits in dairy cows},
 keywords = {gen;phd},
 pages = {e0122325},
 volume = {10},
 number = {3},
 journal = {PLOS ONE},
 doi = {10.1371/journal.pone.0122325},
 file = {http://www.ncbi.nlm.nih.gov/pubmed/25789767},
 file = {https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4366076},
 howpublished = {refereed}
}

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However, until now, only few studies have paid attention to the genetic aspects of this process. Here, we present the results of a gene-based mapping and pathway analysis with the measurements of three key metabolites, (1) non-esterified fatty acids (NEFA), (2) beta-hydroxybutyrate (BHBA) and (3) glucose, characterizing the metabolic adaptability of dairy cows before and after calving. In contrast to the conventional single-marker approach, we identify 99 significant and biologically sensible genes associated with at least one of the considered phenotypes and thus giving evidence for a genetic basis of the metabolic adaptability. Moreover, our results strongly suggest three pathways involved in the metabolism of steroids and lipids are potential candidates for the adaptive regulation of dairy cows in their early lactation. 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