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Genomics and metabolomics of post-weaning return to estrus
- Lea A. Rempel, Gary A. Rohrer, Danny J. Nonneman
- Molecular Reproduction and Development 2017 v.84 no.9 pp. 987-993
- estrus, farrowing, genomics, genotype, gilts, lactation, metabolomics, phenotype, sows, weaning
- The weaning-to-estrus interval is a multifaceted trait that has the potential to substantially improve production efficiency in today’s global swine industry, if variation in this measure can be reduced. Systems-biology approaches should help close the knowledge gap and increase selection tools and management strategies—such as gilt development programs, farrowing, and lactation feeding programs—to decrease the weaning-to-estrus interval. Metabolomics, the study of small compounds within biofluids and tissues, provides links between genotype and phenotype. Given the complexity and influence of the environment on the weaning-to-estrus interval, incorporating metabolomics data will provide valuable insight and guidance for future physiological as well as genetic and genomic strategies to reduce this interval, thereby improving sow productivity.