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Table 4 Growth performance of chickens after indicated treatments1

From: Responses to dietary levels of methionine in broilers medicated or vaccinated against coccidia under Eimeria tenella-challenged condition

  Medicated groups Vaccinated groups P value
Met2 concentrations: 0.45% 0.56% 0.68% 0.45% 0.56% 0.68% Anticoccidial program Met levels Anticoccidial program × Met levels
Initial BW (g) 466 ± 12 470 ± 14 460 ± 8 470 ± 10 463 ± 11 466 ± 7 0.754 0.499 0.303
Final BW (g) 1187 ± 10d 1221 ± 19bc 1212 ± 12c 1244 ± 14a 1230 ± 0.17b 1196 ± 13d 0.004 0.009 <.001
ADFI (g/d) 87.23 ± 0.93b 87.53 ± 1.66b 86.69 ± 1.11b 89.42 ± 0.94a 89.47 ± 2.56a 86.47 ± 2.01b 0.027 0.014 0.166
ADG (g/d) 36.06 ± 0.32c 37.58 ± 0.94b 37.61 ± 0.76b 38.73 ± 0.93a 38.36 ± 1.11ab 36.50 ± 0.72c 0.008 0.035 <.001
F/G 2.42 ± 0.02a 2.33 ± 0.03b 2.31 ± 0.04b 2.31 ± 0.03b 2.33 ± 0.03b 2.37 ± 0.05b 0.188 0.032 <.001
  1. 1An anticoccidial drug (narasin, 60 mg/kg diet) was added to diets in medicated groups, and an anticoccidial 7-valent live vaccine was inoculated in vaccinated groups
  2. 2Met methionine, BW body weight, ADFI average daily feed intake, ADG average daily gain, F/G feed to gain ratio
  3. a,b,c,dThe data of the same row not sharing a lowercase letter differ (P < 0.05; n = 180)