Type of Ova Laid Down
2021 FISH FARMER YEAR BOOK 49 Table 7: Number (000’s) and proportions (%) of eyed ova types laid down to hatch during 2010-2019
Type of Ova Laid Down
TYPE OVA (000’s) LAID and DOWN Table 7:OF Number proportions (%) of eyed ova types laid down to Table 7: Number (000’s) and proportions (%) of eyed ova types All female Mixed sexlaid down to hatch Triploid no. (%) Total ova hatchYear during 2010-2019 diploid no. (%) during 2010-2019. diploid no. (%) 2010
13,352 (89) All female 12,673no. (84) diploid (%) 10,967 (85) 13,352 (89) 7,857 (80) 12,673 (84) 8,321 (75) 10,967 (85) 10,245 (85) 7,857 (80) 7,986 (80) 8,321 (75) 2,366 (34) 10,245 (85) 1,460 (23) 7,986 (80) 1,077 (16) 2,366 (34)
Year 2011 2012 2010 2013 2011 2014 2012 2015 2013 2016 2014 2017 2015 2018 2016 2019 2017
1,052 (7) Triploid 2,254 no. (15)(%) 2,005 (15) 1,052 (7) 1,955 (20) 2,254 (15) 2,710 (25) 2,005 (15) 1,800 (15) 1,955 (20) 1,943 (20) 2,710 (25) 4,670 (66) 1,800 (15) 4,843 (77) 1,943 (20) 5,369 (82) 4,670 (66)
675 (4) Mixed sex 215 no. (1) (%) diploid 7 (<1) 675 (4) 77 (<1) 215 (1) 9 (<1) 7 (<1) 76 (<1) 77 (<1) 5 (<1) 9 (<1) 5 (<1) 76 (<1) 15 (<1) 5 (<1) 105 (2) 5 (<1)
15,079 Total ova 15,142 12,979 15,079 9,889 15,142 11,040 12,979 12,121 9,889 9,934 11,040 7,041 12,121 6,318 9,934 6,551 7,041
2018
1,460 (23)
4,843 (77)
15 (<1)
6,318
2019
1,077 (16)
5,369 (82)
105 (2)
6,551
Source of Ova Laid Down
Table 8: Number (000’s) and sources of eyed ova laid down to hatch in
SOURCE OF OVA LAID DOWN 2010-2019
Source of Ova(000’s) Laidand Down Table 8: Number sources of eyed ova laid down to hatch in 2010-2019. Table 8: Number (000’s) and sources of eyed ova laid down to hatch in Ova produced in Total imported 2010-2019 Great Britain (GB) ova Year
2010 Year 2011 2012 2010 2013 2011 2014 2012 2015 2013 2016 2014 2017 2015 2018 2016 2019 2017
Own stock 415 Own 215 stock 14 415 77 215 9 14 6 77 35 9 20 6 15 35 10 20
Other stock Ova produced in Great Britain (GB) 50 Other 189 stock 230 50 537 189 655 230 888 537 349 655 547 888 495 349 22 547
Total 465 404 Total 244 465 614 404 664 244 894 614 384 664 567 894 510 384 32 567
Northern hemisphere Total imported ova 14,614 Northern 14,738 hemisphere 12,735 14,614 9,275 14,738 10,376 12,735 11,227 9,275 9,550 10,376 6,474 11,227 5,808 9,550 6,519 6,474
Total
15,079 Total 15,142 12,979 15,079 9,889 15,142 11,040 12,979 12,121 9,889 9,934 11,040 7,041 12,121 6,318 9,934 6,551 7,041
IN 2019, THE TOTAL NUMBER OF EYED OVA LAID DOWN TO HATCH INCREASED BY 0.2 MILLION (4%) ON THE 2018 FIGURE
15 number495 510down to hatch 5,808 In2018 2019, the total of eyed ova laid increased by 0.2 6,318 million In 2019, the total number of eyed ova laid down to hatch increased by 0.2 2019on the 10 22ova were imported 32 6,519 6,551The (4%) 2018 figure. All from the northern hemisphere. million (4%) on the 2018 figure. All ova were imported from the Northern proportion of ova from GB broodstock decreased (0.5% of the total) and the rainbow hemisphere. The proportion of ova from GB broodstock decreased (0.5% trout industry reliant on ova. Data on the of ova into In 2019, theremained total number of imported eyed ova laid down to importation hatch increased by 0.2 of the total) and the rainbow industry remained reliant on imported Scotland are also from thetrout health certifi cates and are shown Table 9a. Any million (4%) onavailable the 2018 figure. All ova were imported frominthe Northern ova. Data on the importation of ova8into are also available from discrepancy between the figures inof Tables and Scotland 9a isbroodstock due to data being obtained from hemisphere. The proportion ova from GB decreased (0.5% the independent health certificates and are shown in Table 9a. Any discrepancy between two sources. of the total) and the rainbow trout industry remained reliant on imported the figures in Tables 8 and 9a is due to data being obtained from two ova. Data on the importation of ova into Scotland are also available from independent sources. 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 10 independent sources.
Left: Rainbow trout 10
Production Survey.indd 49
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