Fig. 1
From: Analyzing the genomic and transcriptomic architecture of milk traits in Murciano-Granadina goats
a Principal component analysis (PCA) of mammary samples on the basis of read counts of “protein-coding” features annotated in the general feature format (GFF) file. These samples were obtained 78 d (T1, early lactation), 216 d (late lactation, T2) and 285 d (T3, dry period) after parturition. The red arrow indicates the sample T3-22, which clusters with T1 and T2 samples probably due to an unsuccessful dry-off (Additional file 2: Figure S1). b-d Volcano plots displaying differentially expressed genes in the pairwise comparisons T1 vs. T2 (b), T1 vs. T3 (c) and T2 vs. T3 (d). The red and green dots denote significantly downregulated and upregulated genes, respectively