{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,9,21]],"date-time":"2025-09-21T07:44:04Z","timestamp":1758440644470,"version":"3.44.0"},"reference-count":45,"publisher":"Oxford University Press (OUP)","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2025,1,4]]},"abstract":"<jats:title>Abstract<\/jats:title>\n               <jats:p>Liver abscesses are a concern in feedlot cattle, and little is known about the role of genetics in their development. This study aimed to estimate genetic parameters and to identify single-nucleotide polymorphisms (SNPs) associated with liver abscesses. Crossbred cattle representing 18 breeds in the U.S. Meat Animal Research Center Germplasm Evaluation Program were phenotyped for liver abscesses at slaughter (n\u2005=\u20059,044). Seventeen percent of cattle had liver abscesses. These cattle had genotypes that were imputed to sequence variant genotypes. After filtering and quality control, 340,723 SNPs were used in the analysis. Liver abscess prevalence was modeled with a single-step genomic best linear unbiased prediction (ssGBLUP) threshold model using a Bayesian framework. The model included contemporary group (sex, treatment group, and slaughter date), additive genomic, and residual effects. Genomic heritability was 0.039 (95% highest posterior density\u2005=\u20050.005, 0.081), which was very small. To assess prediction quality, a 5-fold random cross-validation structure was used. Method Linear Regression was used to assess accuracy, bias, and dispersion by comparing estimated breeding values (EBV) from full and reduced analyses. Cross-validation metrics showed EBV based on genotypes had 0.05 reliability (SD\u2005&amp;lt;\u20050.01) with no bias relative to EBV based on genotypes and phenotypes. For the genome-wide association study, SNP effects were back calculated from the EBV solutions from ssGBLUP. No SNPs were associated with liver abscesses at a Benjamini-Hochberg adjusted 0.05 significance level. Although a large dataset was used, this result was because of the low genomic heritability and imprecise EBV used to calculate SNP effects. Based on these results, environmental factors contribute to most of the variation in liver abscesses. Genetic selection to reduce liver abscesses would be slow because of the low genomic heritability, measurement late in life, and inability to measure breeding animals. A faster approach would be finding additional environmental interventions that maintain animal performance.<\/jats:p>","DOI":"10.1093\/jas\/skaf275","type":"journal-article","created":{"date-parts":[[2025,8,12]],"date-time":"2025-08-12T11:39:59Z","timestamp":1754998799000},"source":"Crossref","is-referenced-by-count":0,"title":["Genomic prediction and genome-wide association study for liver abscesses in crossbred beef cattle"],"prefix":"10.1093","volume":"103","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-5404-3872","authenticated-orcid":false,"given":"Heather L","family":"Bradford","sequence":"first","affiliation":[{"name":"USDA, ARS, U.S. Meat Animal Research Center , Clay Center, NE 68933 ,","place":["USA"]}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7573-5365","authenticated-orcid":false,"given":"Larry A","family":"Kuehn","sequence":"additional","affiliation":[{"name":"USDA, ARS, U.S. Meat Animal Research Center , Clay Center, NE 68933 ,","place":["USA"]}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6282-9728","authenticated-orcid":false,"given":"Warren M","family":"Snelling","sequence":"additional","affiliation":[{"name":"USDA, ARS, U.S. Meat Animal Research Center , Clay Center, NE 68933 ,","place":["USA"]}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8099-0870","authenticated-orcid":false,"given":"Brittney N","family":"Keel","sequence":"additional","affiliation":[{"name":"USDA, ARS, U.S. Meat Animal Research Center , Clay Center, NE 68933 ,","place":["USA"]}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Shuna A","family":"Jones","sequence":"additional","affiliation":[{"name":"USDA, ARS, U.S. Meat Animal Research Center , Clay Center, NE 68933 ,","place":["USA"]}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5114-9724","authenticated-orcid":false,"given":"Richard M","family":"Thallman","sequence":"additional","affiliation":[{"name":"USDA, ARS, U.S. Meat Animal Research Center , Clay Center, NE 68933 ,","place":["USA"]}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Amanda K","family":"Lindholm-Perry","sequence":"additional","affiliation":[{"name":"USDA, ARS, U.S. Meat Animal Research Center , Clay Center, NE 68933 ,","place":["USA"]}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"286","published-online":{"date-parts":[[2025,9,5]]},"reference":[{"key":"2025091922221334400_CIT0001","doi-asserted-by":"publisher","first-page":"skaa359","DOI":"10.1093\/jas\/skaa359","article-title":"Rumen epithelial transcriptome and microbiome profiles of rumen epithelium and contents of beef cattle with and without liver abscesses","volume":"98","author":"Abbas","year":"2020","journal-title":"J. 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