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Table 2 Data per week with or without additives, with or without reducing antibiotics; Live weight, average daily gain (ADG), average daily feed intake (ADFI), feed conversion ratio (FCR) per week of 140 weaned piglets (21 days) supplied with or without an organic acid (OA) blend in the drinking water and with full or reduced medication program in the feed

From: Implementing drinking water feed additive strategies in post-weaning piglets, antibiotic reduction and performance impacts: case study

  Control OA + NEO OA SED Trtmt Block T x B
Live weight Entry 6.2 6.1 6.0 0.37 0.893 0.266 0.809
Week 1 6.5 6.5 6.7 0.08 0.074 <0.001 0.294
Week 2 8.0a 8.1ab 8.3b 0.12 0.026 <0.001 0.086
Week 3 9.8a 10.0a 10.3b 0.22 0.043 <0.001 0.188
Week 4 12.5a 12.8a 13.5b 0.24 <0.001 <0.001 0.008
Week 1 ADG 0.052 0.056 0.076 0.012 0.081 0.073 0.310
ADFI 0.16 0.16 0.17 0.014 0.458 0.200 0.747
FCR 3.51a 3.04ab 2.48b 0.398 0.043 0.073 0.032
Week 2 ADG 0.218 0.220 0.232 0.010 0.182 0.003 0.108
ADFI 0.33 0.33 0.32 0.020 0.941 0.180 0.513
FCR 1.53 1.49 1.40 0.079 0.151 <0.001 0.296
Week 3 ADG 0.266 0.282 0.298 0.018 0.145 <0.001 0.399
ADFI 0.48 0.48 0.45 0.032 0.467 0.780 0.144
FCR 1.84 1.73 1.54 0.115 0.059 <0.001 0.508
Week 4 ADG 0.403a 0.419a 0.478b 0.018 <0.001 0.003 0.015
ADFI 0.64 0.67 0.63 0.041 0.475 0.256 0.145
FCR 1.62a 1.62a 1.31b 0.081 0.001 0.022 0.099
  1. 1. Control - Neomycin sulfate 300 ppm in feed
  2. 2. OA + NEO - OA blend at 2 L/1,000 L of water + Neomycin sulfate 300 ppm in feed
  3. 3. OA - OA blend at 2 L/1,000 L of water
  4. a,b Means in a row with different superscripts differ significantly (P<0.05); ADG, average daily gain; ADFI, average daily feed intake; FCR, feed conversion ratio; SED, standard error of difference of the means