Special Issue "Effect of Genetic and Nongenetic Factors on Functional and Milk Production Traits in Livestock"
Deadline for manuscript submissions: closed (25 June 2023) | Viewed by 5781
Interests: quantitative genetics; genetics of heat stress; genomic selection; genome-wide association study; genotype x environment interaction
Over the last several decades, intensive genetic selection for increased milk yield has led to health and fertility problems, since functional traits such as health, longevity and fertility have unfavorable genetic relationships with production traits. In addition, the environment in which dairy farming is practiced varies considerably. Accordingly, susceptibility to environmental challenges such as heat stress and infectious diseases has also been gaining in importance in animal breeding. More importantly, genotype × environment interaction exists when the capacity to alter the phenotype in response to changes in the environment differs among animals.
Understanding the nature of the genetic associations between production, health and fertility traits considering nongenetic factors (e.g., production systems, regions and weather conditions) is essential to optimize the genetic selection in livestock. Several phenotypes derived from milk (e.g., somatic cell count, casein, lactose, β-hydroxybutyrate, and saturated and unsaturated fatty acids) are very useful as indicator traits to improve functional traits. On the other hand, recent advancements in genomic tools offer new opportunities for animal breeders to incorporate functional traits along with milk production traits. In the context of genomic studies, areas fruitful for genetic improvement of dairy productivity also include genome-wide association studies (GWASs) and post-GWAS analyses with a growing emphasis on the role of gene × environment interaction. Such studies identify genomic regions and candidate genes for functional and milk production traits.
This Special Issue aims to present original research (analyzing field data or simulation studies) or reviews related to genetic and environmental factors affecting livestock performance, with particular focus on health and milk production traits.
It is a great pleasure to invite you to contribute to this Special Issue.
Dr. Mehdi Bohlouli
Dr. Katharina May
Manuscript Submission Information
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- candidate gene
- farm management
- functional traits
- genomic region
- genomic selection
- animal health
- milk production