Genomic selection in pigs: state of the art and perspectives

Abstract

Genomic selection, that is based on the prediction of the breeding value (the genomic breeding value or GEBV) of the animals considering genomic information, is changing breeding strategies and approaches in dairy cattle and in several other livestock species. The starting points for the application of genomic selection in pigs were the development of a first commercial singlenucleotide polymorphism panel for high throughput genotyping, the sequencing of the pig genome and the application of statistical and methodological approaches first developed in dairy cattle and then adapted to the peculiarities of the pig breeding industry. In this review, we focused on the specific applications of the genomic selection in pigs, considering its limits, its advantages and its perspectives throughout an analysis of the simulation studies and field applications already available targeting many different traits (with high and low heritability). In addition, we presented an overview of the problems related to the implementation of genomic selection in crossbred and multi-breed pig populations and the potential solutions taking into account the economic aspects that should be faced in including genomic selection in pig breeding programmes. ARTICLE HISTORY

Exploring the genetics of feed efficiency and feeding behaviour traits in a pig line highly selected for performance characteristics

“…An increased importance has been attached to FE traits in animal breeding to consider the efficient conversion of nutrients into body mass and as a major factor driving the productivity and the profitableness of the production system (Arthur and Herd 2005 ). Thus, FE and related traits are a major target for genomic selection strategies in livestock breeding (current state of research summarized by Samorè and Fontanesi 2016 ). The variation in FE is related to extrinsic factors like the formulation and energy density of diets, management, and climatic conditions.…”

Application of Reproduction Biotechnology and Molecular Genetic to Improve Productivity of Local Pigs

“…Kamiński et al (2002) menyatakan bahwa penelitian pada gen yang single nucleotide polymorphism (SNPs) bersifat polimorfisme dapat membangun marka gen untuk deteksi keunggulan babi tersebut dan keunggulan ini dapat digunakan untuk meningkatkan produktivitas babi lainnya. Samorè & Fontanesi (2016) menyatakan bahwa recording pada peubah unggul harus dilakukan dengan akurat, agar asosiasi peubah tersebut dengan SNPs tertentu juga akan benar hasilnya. Maka penggabungan sifat unggul tersebut dengan marka gen yang terdeteksi pada keturunannya akan menghasilkan nilai pemuliaan genomik yang dikenal dengan genomic expected breeding value (GEBV).…”

Advances in Genetic Improvement of Meat Quality Traits in Pig

“…Quite soon, it is expected that SNP genotyping technologies will be substituted by sequencing-based approaches in genomic selection, as sequencing costs should decrease with the introduction of new sequencing approaches and technologies. However, despite the decrease in costs, sequencing might still be too expensive for implementation on a large number of animals [51].…”