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Statistics

arkiv - Pharmaceutical use in Norwegian fish farming in 2001-2008

The Norwegian Institute of Public Health has published an overview of sales of various drugs used in fish breeding in Norway from 2001-2008. The sales are shown in kilograms of active ingredient; antibacterials, anaesthetics, anthelmintics and treatments for sea lice and fungi. The figures are based on sales from wholesalers to pharmacies and from feed mills to breeders.

fisk.jpg
In 2008, sales increased for all drug groups used in fish breeding, except anthelmintics.

Antibacterial use was higher in 2008 than in 2007, but compared to the amount of biomass produced it was still low. Prescription-based statistics from the Norwegian Food Safety Authority for the period 2000-2006 show that this increase can be blamed on new breeding species, especially cod. However, the increase in use for cod was positively correlated to the increase in biomass of cod produced.

The sales of agents for treatment of sea lice infestations have increased considerably from 2007 to 2008. This is more than expected in light of the increased biomass salmon produced but could be due to the upper limit for the allowed number of sea lice per fish being lowered. Resistance against pyrethroids and emamectine is also observed in several areas and unsuccessful treatment courses which had to be repeated with other agents have contributed to the increased sales. Due to resistance problems, azamethiphos is again being used in some areas.

A link to the Norwegian Food Safety Authority’s Prescription Data for 2008 with an overview of recent years' use split by different fish species will be created when these are ready for publication.

Antibacterials (per kg active ingredient) 

 

2001

2002

2003

2004

2005

2006

2007

2008

Florfenicol

109

205

154

111

202

302

139

166

Flumequin

7

5

60

4

28

7

18

1

Lincomycin/ Spectinomycin (1:2)

-

-

-

-

50

67

70

Oxytetracycline

12

11

45

5

8

0

19

23

Oxolinic acid

517

998

546

1035

977

1119

406

681

Total

645

1219

805

1159

1215

1478

649

941

Sea lice treatment (per kg active ingredient)

 

2001

2002

2003

2004

2005

2006

2007

2008

Cypermethrin

69

62

59

55

45

49

30

32

Deltamethrin

19

23

16

17

16

23

29

39

Emamectine

12

20

23

32

39

60

73

81

Azamethiphos

 

 

 

 

 

 

 

66

Teflubenzuron

28

-

-

-

-

-

-

-

Total

128

105

98

104

100

132

132

218

 Anthelmintics (per kg active ingredient)

 

2001

2002

2003

2004

2005

2006

2007

2008

Fenbendazole

21

8

2

23

78

27

1

0

Praziquantel

100

152

232

412

122

145

94

91

Total

121

160

234

435

200

172

95

91

 Fungicides (per kg active ingredient)

 

2001

2002

2003

2004

2005

2006

2007

2008

Bronopol

392

396

422

314

377

492

493

751

Malachite green

7

8

4.5 1)

0.7 1)

0.9 1)

0.9 1)

0.8 1)

0.61)

Total

399

404

427

315

378

493

494

752

1)Has not been used in production of fish for human consumption.

 Anaesthetics (per kg active ingredient)

 

2001

2002

2003

2004

2005

2006

2007

2008

Benzocaine 2)

ca 500

ca 500

ca 500

ca 500

ca 400

ca 400

ca 700

ca 800

Isoeugenol 3)

3

1

1.5

2.5

-

6.5

5 4)

25

Chlorbutanol

1

-

-

-

-

-

-

-

Tricaine mesilate (metacaine)

440

827

699

737

960

1248 4)

1269 4)

2132

2) Calculated sales for fish breeding. Benzocaine is also used in human medicine.
3) Isoeugenol is only used for research.

4) Figures are corrected from last year’s ”Pharmaceutical use in Norwegian fish."

 
Source statement

Wholesaler-based Drug Statistics, Norwegian Institute of Public Health, 2007. Data from this source can be freely stored electronically, printed, reproduced and further processed as long as the original source is quoted in every report, table or figure.