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Updated: Apr 8, 2026

Transcriptome Profiling of In-Vivo Produced Bovine Pre-implantation Embryos Using Two-color Microarray Platform

Transcriptome Profiling of In-Vivo Produced Bovine Pre-implantation Embryos Using Two-color Microarray Platform

Published on: January 30, 2017

Toward Practical Embryo Genomic Selection in Cattle: An Optimized Workflow Enabling High-Accuracy Breeding Value

Jingyu Zhang¹, Zhize Liu¹, Hang Shen¹

¹Frontiers Science Center for Molecular Design Breeding (MOE), Key Laboratory of Animal Genetics, Breeding and Reproduction of the Ministry of Agriculture and Rural Affairs, National Engineering Laboratory for Animal Breeding, College of Animal Science and Technology, China Agricultural University, Beijing, China.

FASEB Journal : Official Publication of the Federation of American Societies for Experimental Biology

|April 7, 2026

Summary

This summary is machine-generated.

A new standardized workflow for embryo genomic selection (EGS) optimizes trophectoderm biopsy and whole-genome amplification. This diameter-stratified strategy ensures embryo viability and accurate genomic estimated breeding values (GEBVs) for livestock breeding.

Keywords:

biopsy area embryo diameter embryo genomic selection genomic estimated breeding values laser‐assisted biopsy whole‐genome amplification

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Area of Science:

Animal genetics and breeding
Reproductive technologies
Genomics and bioinformatics

Background:

Embryo genomic selection (EGS) is crucial for livestock genetic improvement.
Current EGS workflows face challenges in balancing genotyping accuracy with embryo viability due to embryonic heterogeneity.
A standardized, optimized protocol is needed to overcome these limitations.

Purpose of the Study:

To develop and validate a standardized workflow for EGS that maximizes genotyping accuracy while preserving embryo viability.
To establish a diameter-stratified biopsy strategy for optimizing DNA yield and embryo survival.
To address the practical bottleneck hindering the widespread implementation of EGS in livestock.

Main Methods:

Systematic optimization of trophectoderm biopsy and whole-genome amplification techniques.
Development of a diameter-stratified strategy linking embryo diameter to biopsy area.
Validation of genotyping accuracy and embryo viability across different embryo sizes.

Main Results:

High concordance (>98%) between embryo and calf genomic estimated breeding values (GEBVs), confirming prediction reliability.
Defined diameter-based biopsy framework: <150 μm embryos tolerated <1000 μm² biopsy areas; ≥150 μm embryos tolerated up to 1500 μm².
Minimum threshold of 840 μm² biopsy area ensured >90% genotype call rates, optimizing DNA input and embryo survival.

Conclusions:

The diameter-guided biopsy framework enhances embryo survival and GEBV prediction accuracy by preventing over/undersampling.
This study provides a validated technical pathway for EGS, addressing a major bottleneck in livestock breeding.
The optimized EGS protocol facilitates rapid introgression of superior genetics, accelerating genetic progress in cattle and other species.