ArticleTranslational animal science2024
Adapting lipidomic sample processing methods for boars housed in commercial settings.
Article in Translational animal science, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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2 citing papers in PubMed.
- Pilot evaluation of sperm mobility for boar fertility classification using machine learning.Translational animal science · 2026Article
- Broiler breeder putative lipid biomarkers associated with sperm mobility.Frontiers in physiology · 2024Article
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Abstract
Multiple reaction monitoring (MRM) profiling is a sensitive method of lipid screening that has the capability to distinguish between different fertility phenotypes in gilts. However, MRM profiling has not yet been utilized to evaluate fertility phenotypes in boars. Markers indicative of fertility status in boars would be valuable as inclusion of subfertile boars in breeding programs results in a loss of efficiency and negative economic consequences. In addition, semen samples for lipidomic analysis are transported in liquid nitrogen or on dry ice to suspend metabolic activity within the sperm cells, however, these cryopreservation techniques are not commonly available at commercial boar studs. Therefore, the objective of this study was to develop a method of sample processing for MRM profiling that suspends metabolic activity within semen without freezing the sample. Five, sexually mature boars of similar genetics enrolled in a commercial breeding program were collected for the study. Following collection, ejaculates were aliquoted into methanol to suspend metabolic activity and shipped to Purdue University overnight for lipid extraction. Lipids were extracted using the Bligh and Dyer method and MRM profiling was used for lipid screening. A total of 329 ion transitions (MRMs) related to lipids were detected with most lipids being characterized as plasma membrane lipids (74%) which were comprised of phosphatidylcholines (40%), ceramides (16%), phosphatidylethanolamines (11%), and phosphatidylserines (7%). acylcarnitines (AC) represented approximately 8% of the ejaculate lipidome. Hierarchical cluster and principal component analysis revealed that boars have a distinct ejaculate lipidome profile based on major plasma membrane lipid classes. In addition, we observed that one boar was unique in his abundance of AC which are related to progressive motility and sperm cell metabolism. These results indicate that this method of sample processing for MRM profiling is suitable to be used to evaluate the lipidome of ejaculates from commercial boars and has the potential for broader applications across different livestock species in commercial environments.
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