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Table 1 Whole-blood selenium concentrations in healthy and footrot (FR) affected sheep treated with selenium (FR-Se) or saline (FR-Sal)*

From: Higher whole-blood selenium is associated with improved immune responses in footrot-affected sheep

  Median whole-blood Se (range); ng/mL
Month of Treatment Healthy FR-Se FR-Sal
0 250 (187 351)a 199 (109 278)b 202 (111 323)b
3 245 (145 340)a 261 (189 317)a 199 (110 295)b
6 274 (180 396)b 302 (267 403)a 268 (176 408)b
15 230 (165 302) 288 (157 416) 237 (104 344)
  1. *Adapted from Hall et al. [12]. Footrot-affected sheep (n = 38) were alternately randomized into two treatment groups and at 1-month intervals injected subcutaneously with 5 mg of Se (FR-Se) or with 1-mL of saline solution (FR-Sal) for 15 months. A control group of 19 healthy sheep without FR received no injections. There were 19 sheep/group at 0 and 3 months, 18 to 19 sheep/group at 6 months, and 9 to 14 sheep/group at 15 months.
  2. a, bMedians with different superscripts within month are different (P < 0.05).