Table 2. The 10 most abundance co-expressed miRNAs during peak and late lactation.

miRNAs	Reads		Nor_ Reads		F_ change	P_ Value	Sig_ level
	Peak lactation	Late lactation	Peak lactation	Late lactation
miR-143	3,663,628	2,501,394	192,377	338,674	0.82	0	#
miR-143-3p	3,474,077	2,361,222	182,423	319,696	0.81	0	#
miR-148a-3p	1,948,637	193,553	102,322	26,205	−1.97	0	*
let-7-5p	1,569,878	386,744	82,434	52,362	−0.65	0	#
let-7b	1,414,825	368,460	74,292	49,887	−0.57	0	#
let-7b-5p	1,374,801	361,024	72,190	48,880	−0.56	0	#
miR-30a	818,766	135,764	42,993	18,381	−1.23	0	*
miR-30a-5p	818,248	134,361	42,966	18,191	−1.24	0	*
miR-378e	654,953	511,109	34,392	69,201	1.01	0	*
miR-378d	654,554	510,815	34,371	69,161	1.01	0	*

Note: Nor_Reads: Normalized reads, the results of Solexa sequencing, Normalization formula: Normalized expression = Actual miRNA count/Total count of clean reads×1,000,000; F_change: Fold_changes (Log2 Late lactation/Peak lactation), fold changes of miRNAs in both samples, – represents down regulation in late lactation; P_Value: P values manifest the significance of miRNAs differential expression between two samples; Sig_level: Significance_level, # represents no significant difference, * represents significant difference;