Table 2: Effects of subcutaneous injection of melatonin on blood biochemical index of Holstein cows.

From: Exogenous melatonin reduces somatic cell count of milk in Holstein cows

GroupIndexBefore injection1 d after injection3 d after injection
MT (SCC:3 × 105–1 × 106 cells/mL)IgG (g/L)10.26 ± 1.31Aa12.18 ± 1.26Ba8.92 ± 0.63Ca
NON-MT (SCC:3 × 105–1 × 106 cells/mL)10.86 ± 1.82Aa10.53 ± 1.35Ab10.29 ± 1.27Ab
Healthy control (SCC < 1 × 105 cells/mL)5.87 ± 1.01c
MT (SCC:3 × 105–1 × 106 cells/mL)IgM (g/L)2.63 ± 0.21Aa3.39 ± 0.23Ba2.14 ± 0.20Aa
NON-MT (SCC:3 × 105–1 × 106 cells/mL)2.74 ± 0.63Aa2.75 ± 0.44Ab2.65 ± 0.44Ab
Healthy control (SCC < 1 × 105 cells/mL)2.12 ± 0.20b
MT (SCC:3 × 105–1 × 106 cells/mL)ALB (g/L)29.92 ± 1.44Aa33.58 ± 1.31Ba33.92 ± 1.44Ba
NON-MT (SCC:3 × 105–1 × 106 cells/mL)30.08 ± 1.78Aa31.75 ± 1.60Ab28.25 ± 1.22Bb
Healthy control (SCC < 1 × 105 cells/mL)38.5 ± 2.72c
MT (SCC:3 × 105–1 × 106 cells/mL)ALT (U/L)25.42 ± 4.03Aa34.17 ± 4.04Ba35.50 ± 4.38Ba
NON-MT (SCC:3 × 105–1 × 106 cells/mL)24.83 ± 3.93Aa30.00 ± 4.81Bb31.42 ± 5.95Bb
Healthy control (SCC < 1 × 105 cells/mL)35.5 ± 6.42b
MT (SCC:3 × 105–1 × 106 cells/mL)LDH (U/L)801.33 ± 66.48Aa940.67 ± 103.13Ba904.67 ± 96.38Ba
NON-MT (SCC:3 × 105–1 × 106 cells/mL)847.92 ± 85.03Aa844.83 ± 86.80Ab842.83 ± 93.57Ab
Healthy control (SCC < 1 × 105 cells/mL)945.7 ± 87.28b
MT (SCC:3 × 105–1 × 106 cells/mL)GLU (mmol/L)4.06 ± 0.23Aa4.32 ± 0.24Aa4.21 ± 0.19Aa
NON-MT (SCC:3 × 105–1 × 106 cells/mL)3.96 ± 0.23Aa4.16 ± 0.31Aa4.14 ± 0.23Aa
Healthy control (SCC < 1 × 105 cells/mL)4.16 ± 0.22a
  1. MT (melatonin-treated cows); NON-MT (non-melatonin-treated cows). Data expressed as the means ± SEM (n = 10). Values with different superscript letters, such as abrepresent a significant difference within the same group, (P < 0.05); Values with different superscript letters ABrepresent a significant difference between different groups (P < 0.05); The same letters represent no significant difference (P > 0.05).