Table 2: Comparison of the tissue distribution of CAPN2 mRNA at different growth points.

Growth point Breast muscle Heart Liver Brain Leg muscle Abdominal fat 0 w ${15.60}^{\text{b}}\pm 2.58$ ${5.20}^{\text{c}}\pm 2.58$ ${1.08}^{\text{c}}\pm 0.74$ $\setminus$ ${25.22}^{\text{a}}\pm 2.58$ $\setminus$ 2 w ${10.52}^{\text{a}}\pm 1.03$ ${2.28}^{\text{b}}\pm 0.15$ ${1.03}^{\text{b}}\pm 0.03$ ${6.34}^{\text{b}}\pm 1.02$ ${9.15}^{\text{a}}\pm 0.90$ 4 w ${8.12}^{\text{ab}}\pm 2.33$ ${6.39}^{\text{b}}\pm 2.13$ ${1.07}^{\text{b}}\pm 0.62$ ${4.67}^{\text{b}}\pm 0.53$ ${15.06}^{\text{a}}\pm 4.07$ ${4.03}^{\text{b}}\pm 1.97$ 6 w ${19.30}^{\text{a}}\pm 3.35$ ${5.11}^{\text{b}}\pm 0.20$ ${1.03}^{\text{b}}\pm 0.07$ ${7.39}^{\text{b}}\pm 0.48$ ${18.79}^{\text{a}}\pm 2.04$ ${7.97}^{\text{b}}\pm 0.54$ 8 w ${19.95}^{\text{a}}\pm 1.97$ ${7.65}^{\text{b}}\pm 1.65$ ${1.13}^{\text{b}}\pm 0.57$ ${5.23}^{\text{b}}\pm 1.01$ ${21.90}^{\text{a}}\pm 7.58$ ${6.67}^{\text{b}}\pm 2.06$ 10 w $4.16\pm 2.91$ $2.46\pm 0.64$ $1.36\pm 0.07$ $4.01\pm 0.26$ $3.83\pm 2.92$ $3.35\pm 2.24$ 12 w ${6.06}^{\text{ab}}\pm 3.77$ ${4.40}^{\text{ab}}\pm 1.56$ ${1.09}^{\text{b}}\pm 0.36$ ${3.70}^{\text{ab}}\pm 0.75$ ${11.85}^{\text{a}}\pm 2.65$ ${2.36}^{\text{b}}\pm 0.59$

Note. Values in a line without a common lowercase mean that the relative quantities of the CAPN2 gene differ greatly significantly at the same age (P <0.05). Expression data were based on the mountainous black-bone chicken (MB). For each growth point, we used the Ct value of the liver as the control to calculate the expression values of the CAPN2 mRNA in other tissues.