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Table 1 Effect of atmospheric ammonia on the body weight gain, feed intake, feed-conversion ratio and immune organ indices of broilers

From: Proteome changes in the small intestinal mucosa of broilers (Gallus gallus) induced by high concentrations of atmospheric ammonia

  Groups
Control Treatment
Body weight gain (g/day) 91 ± 3.6a 77 ± 2.5b
Feed intake (g/day) 150 ± 1.9a 135 ± 2.8b
Feed-conversion ratioc 1.64 ± 0.09b 1.75 ± 0.05a
Index of bursal (%)d 0.73 ± 0.06 0.61 ± 0.05
Index of spleen (%)d 1.07 ± 0.04a 0.75 ± 0.02b
Index of thymus (%)d 2.35 ± 0.50 2.19 ± 0.44
Index of intestine (%)d 3.70 ± 0.15a 2.67 ± 0.11b
  1. a, bValues within a row not sharing a common superscript letter indicate significant difference at P < 0.05. Numbers are means ± S.D. (n = 30 for growth parameters; n = 6 for indices of immune organs).
  2. cFeed-conversion ratio = the ratio of feed intake to body weight gain.
  3. dThe ratio of organ weight to body weight.