46 FISHof FARM PRODUCTION SURVEY 2022 Type Ova Laid Down Table 7: Number (000’s) and proportions (%) of eyed ova types laid down to Type of Laid hatch T Y P E during OF Ova OV2013-2022 A L A Down I D D OW N Table 7: Number (000’s) and proportions (%) of eyed ova types laid down to T a ble s ev en : n umber ( 0 0 0 s ) a n d proporti on s ( % ) of eyed ov a types la i d hatch during 2013-2022 All2 female Mixed sex d ow n Year to h a tch f rom 0 1 3 to 2 0 2 Triploid 2 no. (%) Total ova diploid no. (%) diploid no. (%) 1,955 no. (20)(%) Triploid 2,710 (25) 1,955 (20) 1,800 (15) 2,710 (25) 1,943 (20) 1,800 (15) 4,670 (66) 1,943 (20) 4,843 (77) 4,670 (66) 5,369 (82) 4,843 (77) 5,943 (95) 5,369 (82) 4,877 (<100) 5,943 (95) 4,138 (<100) 4,877 (<100) Mixed sex 77 (<1) diploid no. (%) 9 (<1) 77 (<1) 76 (<1) 9 (<1) 5 (<1) 76 (<1) 5 (<1) 5 (<1) 15 (<1) 5 (<1) 105 (2) 15 (<1) 15 (<1) 105 (2) 15 (<1) 15 (<1) 5 (<1) 15 (<1) 9,889 Total ova 2014 2013 2015 2014 2016 2015 2017 2016 2018 2017 2019 2018 2020 2019 2021 2020 2022 2021 All female 7,857 (80) diploid no. (%) 8,321 (75) 7,857 (80) 10,245 (85) 8,321 (75) 7,986 (80) 10,245 (85) 2,366 (34) 7,986 (80) 1,460 (23) 2,366 (34) 1,077 (16) 1,460 (23) 286 (5) 1,077 (16) 2 (<1) 286 (5) 8 (<1) 2 (<1) 2022 8 (<1) 4,138 (<100) 5 (<1) 4,151 2013 Year Source of Ova Laid Down SOU R C E OF OV A L A I D D OW 11,040 9,889 12,121 11,040 9,934 12,121 7,041 9,934 6,318 7,041 6,551 6,318 6,244 6,551 4,894 6,244 4,151 4,894 N Table 8: Number (000’s) and sources of eyed ova laid down to hatch in Source Laid T a ble ei g of h t: Ova n umber ( 0 0 Down 0 s ) a n d s ources of eyed ov a la i d d ow n to h a tch i n 2013-2022 2 0 1 3 to 0 2 2 Table 8: 2 Number (000’s) and sources of eyed ova laid down to hatch in 2013-2022 Ova produced in Year Year 2013 2014 2013 2015 2014 2016 2015 2017 2016 2018 2017 2019 2018 2020 2019 2021 2020 2022 2021 Imported ova Great Britain (GB) in Own Ova produced Other Total stockGreat Britain stock (GB) Northern Imported Southern ova hemisphere hemisphere Total Imported Own 77 stock 9 77 6 9 35 6 20 35 15 20 10 15 15 10 181 15 740 181 Northern 9,275 hemisphere 10,376 9,275 11,227 10,376 9,550 11,227 6,474 9,550 5,808 6,474 6,519 5,808 3,712 6,519 3,645 3,712 2,637 3,645 Total 9,275 Imported 10,376 9,275 11,227 10,376 9,550 11,227 6,474 9,550 5,808 6,474 6,519 5,808 4,677 6,519 3,645 4,677 2,637 3,645 Other 537 stock 655 537 888 655 349 888 547 349 495 547 22 495 1,552 22 1,068 1,552 744 1,068 614 Total 664 614 894 664 384 894 567 384 510 567 32 510 1,567 32 1,249 1,567 1,514 1,249 Southern 0 hemisphere 0 0 0 0 0 0 0 0 0 0 0 0 965 0 0 965 0 0 Total Ova Laid Down Total THE PROPORTION OF OVA FROM GB BROODSTOCK INCREASED (36% OF THE TOTAL) Ova Laid 9,889 Down 11,040 9,889 12,121 11,040 9,934 12,121 7,041 9,934 6,318 7,041 6,551 6,318 6,244 6,551 4,894 6,244 4,151 4,894 In 2 0 2 2 , the total number of eyed ova laid down to hatch decreased by 0 . 7 million 2022 740 1,514 2,637 0 2,637 4,151 In 2022, the totalfi744 number of eyed laidfrom down hatch decreased ) on the gure. mported ova ova all came thetonorthern hemisphere by 0.7 million onproportion the 2021 ova all came from of the during (15%) . The of figure. ova fromImported G broodstock increased theNorthern In 2022, therainbow total number of eyed ova laid to hatch decreased by 0.7 hemisphere during 2022. The proportion ofdown ova from GBova. broodstock total) and the trout industry remained reliant on imported ata on the million (15%) onof the 2021 Imported ova all health came certifi from the and Northern importation of ova into Scotland are available from the cates are increased (36% the total)figure. andalso the rainbow trout industry remained hemisphere during The on proportion ovainfrom GB broodstock shown inon table a. ny 2022. discrepancy between the fiof gures tables eight and a is due reliant imported ova. Data the importation of ova into Scotland are increased (36% of the and the rainbow industry to data being obtained from two independent sources. also available from thetotal) health certificates andtrout are shown in remained Table 9a. Any reliant on imported ova. on in theTables importation of is ova into are discrepancy between theData figures 8 and 9a due to Scotland data being also available from the health certificates and are shown in Table 9a. Any obtained from two independent sources. discrepancy between the figures in Tables 8 and 9a is due to data being obtained from two independent sources. 10 10 36_Scottish Fish Farm Survey_converted.indd 46 28/11/2023 15:42:42