Table 3: Effects of subcutaneous injection of melatonin on white and red blood cell counts 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)WBC (*109 cells/L)13.74 ± 2.63Aa16.58 ± 3.95Ba10.93 ± 2.35Ca
NON-MT (SCC:3 × 105–1 × 106 cells/mL)13.98 ± 6.29Aa14.96 ± 7.50Aa16.35 ± 5.44Aa
Healthy control (SCC < 1 × 105 cells/mL)8.86 ± 1.18b
MT (SCC:3 × 105–1 × 106 cells/mL)LYM (*109 cells/L)7.93 ± 4.43Aa13.63 ± 5.92Aa6.14 ± 1.48Ba
NON-MT (SCC:3 × 105–1 × 106 cells/mL)8.62 ± 3.68Aa8.79 ± 2.59Ab12.98 ± 5.40Ba
Healthy control (SCC < 1 × 105 cells/mL)4.75 ± 1.49b
MT (SCC:3 × 105–1 × 106 cells/mL)GRN (*109 cells/L)4.35 ± 0.79Aa4.33 ± 0.93Aa3.68 ± 0.83Aa
NON-MT (SCC:3 × 105–1 × 106 cells/mL)4.29 ± 0.65Aa4.64 ± 0.39Ab4.28 ± 0.94Aa
Healthy control (SCC < 1 × 105 cells/mL)3.04 ± 0.51b
MT (SCC:3 × 105–1 × 106 cells/mL)RBC (*1012 cells/L)5.69 ± 0.40Aa5.61 ± 0.37Aa5.73 ± 0.54Aa
NON-MT (SCC:3 × 105–1 × 106 cells/mL)6.04 ± 0.47Aa5.96 ± 0.50Aa5.86 ± 0.43Aa
Healthy control (SCC < 1 × 105 cells/mL)5.65 ± 0.54a
  1. MT (melatonin-treated cows); NON-MT (non-melatonin-treated cows); WBC: white blood cells; LYM: lymphocytes; GRN: granulocyte neutrophil; RBC: red blood cells. 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).