Uncovering the embryonic development-related proteome and metabolome signatures in breast muscle and intramuscular fat of fast-and slow-growing chickens

Table 2 Characteristics of muscle fibers at different stages in Beijing-you and Cobb chickens*

Term	Breeds	Time
Term	Breeds	ED 17	D 1	D 14
Fiber diameter (μm)	BJY	6.85 ± 0.20^C	7.57 ± 0.14^B	22.87 ± 0.30^A
Fiber diameter (μm)	Cobb	5.10 ± 0.04^B	4.84 ± 0.07^C	27.51 ± 0.42^A
Fiber cross-sectional area (μm²)	BJY	28.45 ± 1.42^C	36.58 ± 1.29^B	280.79 ± 6.49^A
Fiber cross-sectional area (μm²)	Cobb	16.70 ± 0.24^B	15.13 ± 0.42^C	425.79 ± 13.61^A
Fiber density (fibers/mm²)	BJY	29.01 ± 0.40^A	21.41 ± 0.29^B	3.04 ± 0.04^C
Fiber density (fibers/mm²)	Cobb	47.10 ± 0.80^A	51.54 ± 3.05^A	2.54 ± 0.04^B

*Different uppercase superscripts indicate significant differences (P < 0.01) within the row. On a within-day basis, all differences between two breeds were significant.Muscle fibers at ED12 were too small to be reliably measured

ISSN: 1471-2164