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Table 3 Growth performance of untreated and antibiotics (AB) treated pigs in two Danish “raised without antibiotics” (RWA) herds

From: Performance and risk factors associated with first antibiotic treatment in two herds, raising pigs without antibiotics

 

Herd A

Herd B

Untreated

AB treated

Never- RWA

SEM2

P-Value

Untreated

AB treated

Never-RWA

SEM2

P-value

BW2 (kg)

 Week 2

3.81a

3.20bA

3.63bB

0.087

< 0.001

3.44a

3.22a

3.39a

0.067

0.376

 Week 4

6.13a

5.01bA

5.89bB

0.132

< 0.001

5.96A

5.48B

5.91AB

0.067

0.088

 Week 12

31.3a

27.7bA

33.6bB

0.682

< 0.001

28.7a

26.8a

27.7a

0.625

0.154

ADG2 (g/day)

 Day 0–12

212a

158b

213a

3.76

< 0.001

168a

153ab

153b

4.94

< 0.001

 Day 0–24/261

204a

153b

202a

5.16

< 0.001

173A

155B

166AB

2.38

0.062

 Day 24/261–84

432a

374b

496a

10.7

< 0.001

403a

377ab

348b

11.1

0.001

 Day 0–84

368a

313b

405a

8.13

< 0.001

330a

307ab

290b

7.7

< 0.001

  1. a,b Values within a row with different superscripts differ significantly at P < 0.05 (values within a row with same superscript does not differ significantly)
  2. A,B Values within a row with different superscripts have a tendency to differ at P < 0.10
  3. 1Bodyweight were measured at day 24 in herd A, and day 26 in herd B
  4. 2SEM Standard error of mean, BW bodyweight, ADG average daily gain