Skip to main content

Table 12 The quantities of antimicrobial active ingredients used in grower-finisher feed, water, and by injection as measured in weight-based and dose-based metrics (23 grower-finisher herds in the province of Ontario, Canada, May 2017–April 2018)

From: Antimicrobial use in lactating sows, piglets, nursery, and grower-finisher pigs on swine farms in Ontario, Canada during 2017 and 2018

ROA

Antimicrobial active ingredients

Class

Number of herds

Mg/kg biomass

DosesCA/piga

DoseCA ratea

Feed

Chlortetracycline

Tetracyclines

5

81.0

7.8

69.5

Lincomycin

Lincosamides

10

66.5

13.3

118.8

Salinomycin

Ionophores

2

13.8

13.8

122.9

Tiamulin

Pleuromutilins

1

3.3

0.6

5.2

Tylosin

Macrolides

3

33.6

10.8

96.71

Tylvalosin

Macrolides

1

5.6

3.3

29.4

Virginiamycin

Streptogramins

1

16.5

5.0

44.6

Injection

Benzathine penicillin G (with other antimicrobials)

Penicillins

1

0.01

0.009

0.076

Florfenicol

Phenicols

1

0.05

0.007

0.062

Lincomycin

Lincosamides

2

0.16

0.016

0.142

Oxytetracycline

Tetracyclines

1

0.01

0.001

0.009

Procaine penicillin G

Penicillins

4

0.02

0.017

0.150

Procaine penicillin G LA

Penicillins

1

0.11

0.002

0.014

Tiamulin

Pleuromutilins

1

0.02

0.002

0.017

Tylosin

Macrolides

1

0.11

0.020

0.176

Water

Amoxicillin

Penicillins

1

4.3

0.27

2.4

Penicillin G potassium

Penicillins

2

17.2

0.96

8.6

Tetracycline

Tetracycline

1

3.7

0.42

3.8

  1. ROA route of administration
  2. aDosesCA per pig = number of Canadian defined daily doses per pig; DoseCA rate = number of Canadian defined daily doses per 1000 pig-days