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Table 1 Effects of antibiotics or an antimicrobial peptide cecropin on the performance of four week old weaned pigs after challenge with E. coli as well as nutrient digestibility before challenge

From: Alternatives to antibiotics as growth promoters for use in swine production: a review

Items Control Antibiotics1 Cecropin SEM P-value
Performance (day 13-19)
 Weight gain, g/d 312a 367b 358b 6.4 <0.01
 Feed intake, g/d 566 597 592 9.8 0.08
 Feed efficiency 0.55a 0.62b 0.61b 0.01 <0.01
 Diarrhea incidence, % 37.50 17.86 19.64   
Nutrient digestibility
 Nitrogen retention, g/d 10.1a 11.5b 10.7ab 0.38 0.04
 Nitrogen digestibility, % 73.2 76.9 75.0 1.20 0.17
 Energy retention, MJ/kg/d) 2.5a 3.0b 2.8ab 0.13 0.04
 Energy digestibility, % 84.6 88.2 86.4 1.71 0.14
  1. Wu et al. [21].
  2. 1Kitasamycin and colistin sulfate.
  3. a,bWithin row, means followed by same or no letter do not differ (P>0.05).