Annual Fish Farm Production Survey 2012
Annual Fish Farm Production Survey 2012
1. RAINBOW TROUT ( Oncorhynchus mykiss)
Production survey information was collected from all 25 companies actively involved in rainbow trout production, farming 48 active sites. This figure represents the entire industry operating in Scotland.
Production
Table 1a: Total production (tonnes) of rainbow trout during 1998-2012 and projected production in 2013
Year | Tonnes | Year | Tonnes |
---|---|---|---|
1998 | 4,913 | 2006 | 7,492 |
1999 | 5,834 | 2007 | 7,414 |
2000 | 5,154 | 2008 | 7,670 |
2001 | 5,466 | 2009 | 6,766 |
2002 | 6,659 | 2010 | 5,139 |
2003 | 7,085 | 2011 | 4,619 |
2004 | 6,352 | 2012 | 5,670 |
2005 | 6,989 | 2013 | 6,697* |
Production increased in 2012 by 1,051 tonnes, an increase of 22.8%.
* Industry estimate based on stocks currently being on-grown.
Table 1b: Production (tonnes) for the table trade during 2002-2012 according to weight category
Year | <450 g | 450-900 g | >900 g | Total |
---|---|---|---|---|
<1 lb | 1-2 lbs | >2 lbs | Tonnes | |
2002 | 2,937 | 1,056 | 1,718 | 5,711 |
2003 | 2,531 | 1,181 | 2,477 | 6,189 |
2004 | 1,553 | 1,946 | 1,917 | 5,416 |
2005 | 2,856 | 1,203 | 2,111 | 6,170 |
2006 | 2,182 | 1,810 | 2,636 | 6,628 |
2007 | 2,499 | 1,663 | 2,407 | 6,569 |
2008 | 2,375 | 1,950 | 2,487 | 6,812 |
2009 | 2,232 | 1,143 | 2,620 | 5,995 |
2010 | 2,125 | 727 | 1,606 | 4,458 |
2011 | 1,421 | 1,004 | 1,433 | 3,858 |
2012 | 1,195 | 1,655 | 2,209 | 5,059 |
Production for the table in 2012 was 5,059 tonnes, an increase of 1,201 tonnes (31.1%) on the 2011 total, and accounted for 89.2% of the total rainbow trout production, a similar proportion to that produced in 2011. Supply was mainly of fish weighing up to 900g, encompassing 56.3% of total table production. Increases in the number of fish in the medium and large size ranges and a decrease in the number of fish in the small size range were highlighted.
Table 1c: Production (tonnes) for the restocking trade during 2002-2012 according to weight category
Year | <450 g | 450-900 g | >900 g | Total |
---|---|---|---|---|
<1 lb | 1-2 lbs | >2 lbs | Tonnes | |
2002 | 28 | 484 | 436 | 948 |
2003 | 63 | 490 | 343 | 896 |
2004 | 64 | 509 | 363 | 936 |
2005 | 21 | 390 | 408 | 819 |
2006 | 36 | 357 | 471 | 864 |
2007 | 24 | 413 | 408 | 845 |
2008 | 27 | 351 | 480 | 858 |
2009 | 32 | 294 | 444 | 770 |
2010 | 19 | 201 | 461 | 681 |
2011 | 8 | 419 | 334 | 761 |
2012 | 22 | 266 | 323 | 611 |
In 2012, production for the restocking of angling waters decreased by 150 tonnes to 611 tonnes representing a decrease of 19.7% on the 2011 total. This accounted for 10.8% of total rainbow trout production in 2012. These figures represent the tonnage of fish supplied to angling waters for restocking purposes; they do not account for the catch taken by anglers. The production of medium and large sized fish showed decreases, while this increased for small sized fish.
Escapes
There were two incidents involving the loss of a total of 3,434 fish from rainbow trout sites in 2012.
Production by Site
Table 2: Numbers of sites grouped by tonnage produced during 2002-2012
Year | Number of sites per production tonnage | Total number of sites | |||
---|---|---|---|---|---|
<1-25 | 26-100 | 101-200 | >200 | ||
2002 | 16 | 13 | 4 | 12 | 45 |
2003 | 17 | 9 | 6 | 11 | 43 |
2004 | 14 | 14 | 5 | 10 | 43 |
2005 | 18 | 12 | 6 | 11 | 47 |
2006 | 16 | 15 | 6 | 13 | 50 |
2007 | 14 | 15 | 3 | 16 | 48 |
2008 | 8 | 15 | 7 | 14 | 44 |
2009 | 10 | 11 | 7 | 11 | 39 |
2010 | 7 | 13 | 9 | 7 | 36 |
2011 | 9 | 10 | 6 | 8 | 33 |
2012 | 10 | 10 | 6 | 8 | 34 |
Production was reported from 34 sites. The number of producers in the size bracket <1-25 tonnes increased in 2012, while those producers in the other size brackets remained the same. These figures do not include those sites specialising in the production of ova or young fish for on-growing.
Production by Method
Table 3: Grouping of rainbow trout sites by production tonnages, main method of production in 2012 and comparison with production in 2011
Production method | Production grouping (tonnes) in 2012 | Total tonnage and (%) by method | Number of sites | ||||||
---|---|---|---|---|---|---|---|---|---|
<10 | 10-25 | 26-50 | 51-100 | >100 | 2011 | 2012 | 2011 | 2012 | |
FW cages | 1 | 0 | 0 | 0 | 5 | 1,835 (39.7%) |
2,220 (39.2%) |
6 | 6 |
FW ponds and raceways | 2 | 3 | 3 | 6 | 4 | 1,619 (35.1%) |
1,362 (24.0%) |
19 | 18 |
FW tanks and hatcheries | 3 | 0 | 0 | 0 | 0 | 9 (<1%) | 12 (<1%) | 3 | 3 |
SW cages | 1 | 0 | 1 | 0 | 5 | 1,156 (25.0%) |
2,076 (36.6%) |
5 | 7 |
SW tanks | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Total | 7 | 3 | 4 | 6 | 14 | 4,619 | 5,670 | 33 | 34 |
Freshwater production accounted for 3,594 tonnes (63.4%) and seawater production for the remaining 2,076 tonnes (36.6%). Production from freshwater cages and seawater cages increased whilst there was a decrease in production from freshwater ponds and raceways.
Company and Site Data
Table 4: Number of companies and sites in production during 1999-2012
Year | No. of companies | No. of sites |
---|---|---|
1999 | 54 | 68 |
2000 | 54 | 63 |
2001 | 50 | 57 |
2002 | 39 | 57 |
2003 | 37 | 56 |
2004 | 38 | 62 |
2005 | 42 | 70 |
2006 | 36 | 66 |
2007 | 38 | 70 |
2008 | 31 | 66 |
2009 | 27 | 56 |
2010 | 25 | 51 |
2011 | 23 | 48 |
2012 | 25 | 48 |
In 2012 the number of companies authorised by the Scottish Government and actively engaged in rainbow trout production was 25. The number of sites registered and in production was 48.
Staffing and Productivity
Table 5: Number of staff employed and productivity per person during 1999-2012
Year | Full-time | Part-time | Total | Productivity (tonnes/person) |
---|---|---|---|---|
1999 | 126 | 51 | 177 | 33.0 |
2000 | 121 | 47 | 168 | 30.7 |
2001 | 118 | 41 | 159 | 34.4 |
2002 | 114 | 46 | 160 | 41.6 |
2003 | 107 | 41 | 148 | 47.9 |
2004 | 115 | 37 | 152 | 41.8 |
2005 | 108 | 35 | 143 | 48.9 |
2006 | 112 | 35 | 147 | 51.0 |
2007 | 111 | 32 | 143 | 51.8 |
2008 | 107 | 34 | 141 | 54.4 |
2009 | 111 | 27 | 138 | 49.0 |
2010 | 98 | 31 | 129 | 39.8 |
2011 | 95 | 23 | 118 | 39.1 |
2012 | 79 | 28 | 107 | 53.0 |
The overall number of staff employed in 2012 decreased by 11 to 107. The numbers of full-time staff decreased by 16 while the number of part-time staff increased by five. Productivity, measured as tonnes produced per person, increased by 35.5% in 2012 with no distinction between full and part-time employees being made for this calculation.
Production by Area
Table 6: Production and staffing by area in 2012
Area | No. of sites | Table production (tonnes) | Restocking production (tonnes) | Mean tonnes per site | Staffing | Productivity (tonnes/person) | ||
---|---|---|---|---|---|---|---|---|
F/T | P/T | Total | ||||||
North | 7 | 3 | 39 | 6.0 | 7 | 5 | 12 | 3.5 |
East | 15 | 821 | 236 | 70.5 | 24 | 8 | 32 | 33.0 |
West | 12 | 3,621 | 41 | 305.2 | 22 | 10 | 32 | 114.4 |
South | 14 | 614 | 295 | 64.9 | 26 | 5 | 31 | 29.3 |
All | 48 | 5,059 | 611 | 118.1 | 79 | 28 | 107 | 53.0 |
Productivity was greatest in the West at 305.2 tonnes per site and productivity per person was greatest in the West at 114.4 tonnes.
Figure 1: The distribution of active rainbow trout sites in 2012
Type of Ova Laid Down
Table 7: Number (000's) and proportions (%) of ova types laid down to hatch during 2001-2012
Year | All female diploid no. (%) | Triploid no. (%) | Mixed sex diploid no. (%) | Total ova |
---|---|---|---|---|
2001 | 20,788 (90) | 2,107 (9) | 140 (1) | 23,035 |
2002 | 19,733 (89) | 1,822 (8) | 570 (3) | 22,125 |
2003 | 24,692 (94) | 1,586 (6) | 60 (<1) | 26,338 |
2004 | 29,272 (90) | 3,146 (10) | 138 (<1) | 32,556 |
2005 | 16,773 (83) | 1,729 (8) | 1,745 (9) | 20,247 |
2006 | 22,378 (84) | 2,804 (10) | 1,626 (6) | 26,808 |
2007 | 23,630 (83) | 2,531 (9) | 2,140 (8) | 28,301 |
2008 | 22,978 (88) | 2,526 (9) | 725 (3) | 26,229 |
2009 | 15,469 (87) | 2,341 (13) | 35 (<1) | 17,845 |
2010 | 13,352 (89) | 1,052 (7) | 675 (4) | 15,079 |
2011 | 12,673 (84) | 2,254 (15) | 215 (1) | 15,142 |
2012 | 10,967 (85) | 2,005 (15) | 7 (<1) | 12,979 |
Source of Ova Laid Down
Table 8: Number (000's) and sources of ova laid down to hatch 2001-2012
Year | Ova produced in Great Britain ( GB) | Imported ova | Total | ||||
---|---|---|---|---|---|---|---|
Own stock | Other stock | Total | Northern hemisphere | Southern hemisphere | Total | ||
2001 | 918 | 525 | 1,443 | 13,515 | 8,075 | 21,590 | 23,033 |
2002 | 530 | 200 | 730 | 12,385 | 9,010 | 21,395 | 22,125 |
2003 | 430 | 280 | 710 | 25,578 | 50 | 25,628 | 26,338 |
2004 | 330 | 320 | 650 | 31,906 | 0 | 31,906 | 32,556 |
2005 | 281 | 105 | 386 | 16,977 | 2,884 | 19,861 | 20,247 |
2006 | 541 | 2,169 | 2,710 | 22,588 | 1,510 | 24,098 | 26,808 |
2007 | 936 | 230 | 1,166 | 26,650 | 485 | 27,135 | 28,301 |
2008 | 582 | 487 | 1,069 | 25,160 | 0 | 25,160 | 26,229 |
2009 | 603 | 220 | 823 | 17,022 | 0 | 17,022 | 17,845 |
2010 | 415 | 50 | 465 | 14,614 | 0 | 14,614 | 15,079 |
2011 | 215 | 189 | 404 | 14,738 | 0 | 14,738 | 15,142 |
2012 | 14 | 230 | 244 | 12,735 | 0 | 12,735 | 12,979 |
The total number of eyed-ova laid down to hatch in 2012 was less than that in 2011. The proportion of ova from GB broodstock decreased to 1.9% of the total and the rainbow trout industry remained reliant on imported ova. Data on the importation of ova into Scotland are also available from the health certificates and are shown in Table 9a. Any discrepancy between the figures in Tables 8 and 9a is due to data being obtained from two independent sources.
Imports of Ova from Official Import Health Certificates
Table 9a: Number (000's) and sources of ova imported into Scotland during 2005-2012
Source | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | 2012 |
---|---|---|---|---|---|---|---|---|
N. Ireland | 1,710 | 2,830 | 7,721 | 16,130 | 10,090 | 9,247 | 7,320 | 8,332 |
Isle of Man | 1,700 | 3,480 | 3,767 | 775 | 290 | 1,400 | 520 | 300 |
Denmark | 9,225 | 14,525 | 13,070 | 5,530 | 4,070 | 1,715 | 5,250 | 1,950 |
South Africa | - | - | 485 | - | - | - | - | - |
USA | 4,440 | 2,310 | 890 | 1,490 | 2,240 | 2,340 | 1,580 | 1,800 |
France | 200 | - | - | - | - | - | - | - |
Australia | 2,600 | 1,500 | - | - | - | - | - | - |
Norway | - | 500 | 1,200 | 1,500 | 750 | 200 | 130 | 300 |
Totals | 19,875 | 25,145 | 27,133 | 25,425 | 17,440 | 14,902 | 14,800 | 12,682 |
Table 9b: Seasonal variation in numbers (000's) and sources of ova imported into Scotland during 2012
Month | Norway | Isle of Man | Denmark | N. Ireland | USA |
---|---|---|---|---|---|
January | 120 | - | 225 | 1,000 | - |
February | 180 | - | 575 | 1,160 | - |
March | - | 300 | 435 | 1,000 | - |
April | - | - | - | - | - |
May | - | - | 390 | 500 | - |
June | - | - | - | 1,350 | 800 |
July | - | - | - | - | 200 |
August | - | - | - | 1,050 | 200 |
September | - | - | - | - | 600 |
October | - | - | 125 | 462 | - |
November | - | - | - | 750 | - |
December | - | - | 200 | 1,060 | - |
Totals | 300 | 300 | 1,950 | 8,332 | 1,800 |
Suppliers within the European Union ( EU) accounted for 83.4% of ova imported into Scotland during 2012 with the USA and Norway accounting for 14.2% and 2.4% respectively. To maintain their ability to regulate production throughout the year and produce a constant supply of fish for their markets, producers have to rely upon supplies of out of season ova.
Trade in Fry and Fingerlings
Table 10: Number (000's) of fry and fingerlings traded during 2001-2012
Year | Fry and fingerlings bought | Total number bought | Total number sold | ||
---|---|---|---|---|---|
All female diploid no. (%) | Triploid no. (%) | Mixed sex diploid no. (%) | |||
2001 | 16,065 (96) | 685 (4) | 0 | 16,750 | 13,961 |
2002 | 10,031 (88) | 670 (6) | 667 (6) | 11,368 | 10,101 |
2003 | 17,500 (94) | 1,007 (5) | 193 (1) | 18,700 | 17,451 |
2004 | 18,859 (91) | 1,536 (7) | 364 (2) | 20,759 | 19,166 |
2005 | 14,618 (83) | 1,532 (9) | 1,480 (8) | 17,630 | 16,919 |
2006 | 19,731 (89) | 1,675 (7) | 790 (4) | 22,196 | 20,460 |
2007 | 14,830 (89) | 1,140 (7) | 675 (4) | 16,645 | 23,631 |
2008 | 24,298 (95) | 1,082 (4) | 118 (0.5) | 25,498 | 31,036 |
2009 | 21,113 (94) | 1,358 (6) | 0 | 22,471 | 20,597 |
2010 | 15,539 (95) | 585 (4) | 141 (1) | 16,265 | 14,686 |
2011 | 16,288 (88.5) | 1,970 (10.7) | 138 (0.8) | 18,396 | 16,612 |
2012 | 12,543 (91) | 1,226 (9) | 0 | 13,769 | 12,088 |
The established trade between hatcheries and on-growing farms continued in 2012. Some companies specialised in the production of fry and fingerlings. The total number of fry and fingerlings purchased and sold decreased by 25.2% and 27.2% respectively. The disparity between supply and demand is due to trade with England and Wales.
Use of Vaccines
Table 11: Number of sites rearing fish vaccinated against enteric redmouth disease ( ERM) during 2001-2012
Year | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | 2012 |
---|---|---|---|---|---|---|---|---|---|---|---|---|
No. of sites | 33 | 34 | 38 | 42 | 37 | 31 | 28 | 28 | 31 | 27 | 26 | 24 |
Vaccines continued to be widely used as a preventative treatment against enteric redmouth disease ( ERM), a potentially serious bacterial disease, caused by the bacterium Yersinia ruckeri. A total of 20.4 million fish were vaccinated on 24 sites. Vaccination is generally carried out as a bath treatment at the fingerling stage, although some vaccines were administered by intra-peritoneal injection.
Organic Production
Of the 48 sites recorded as being active in rainbow trout production in 2012, none were certified as organic.
Contact
There is a problem
Thanks for your feedback