Reproductive technologies and genomic selection in dairy cattle

Area of Science:

• Animal Genetics
• Reproductive Biotechnology
• Genomic Selection

Background:

• Genomic tools are widely available for livestock, with genomic selection (GS) routinely used in cattle.
• Low-density single nucleotide polymorphism (SNP) technology is affordable for female selection in dairy cattle.
• Integrating genome testing with reproductive biotechnologies offers new strategies for elite female generation.

Purpose of the Study:

• To review the integration of reproductive technologies with genomic selection for commercial and genetic purposes.
• To discuss the potential side effects and beneficial impacts on reproductive efficiency.
• To highlight advancements in embryo genotyping for genetic screening.

Main Methods:

• Review of recent advances in genomic selection and reproductive technologies.
• Focus on embryo micromanipulation for DNA extraction.
• DNA production and quality assessment in preimplantation embryos.

Main Results:

• Genomic testing combined with reproductive biotechnologies enables efficient generation of replacement and elite females.
• Preimplantation embryo genetic screening is becoming feasible through marker detection.
• Advances facilitate new strategies for genetic improvement in livestock.

Conclusions:

• The integration of genomic selection and reproductive technologies offers significant potential for enhancing reproductive efficiency and genetic gain in cattle.
• Embryo genotyping presents a powerful tool for preimplantation genetic diagnosis and selection.
• Further research and application of these combined strategies can revolutionize cattle breeding programs.