Implementation of genomic selection in small populations – Croatian case Z. Ivkić, M. Dražić, Z. Barać, M. Špehar Speaker: Marija Spehar
Implementation of genomic selection in small populations - Croatian case Marija Š pehar, Zdenko Ivkić , Maja Dražić , Zdravko Barać Croatian Agricultural Agency, http://www.hpa.hr/
Structure Other; 4.3 Crossbreeds; 5.6 of Brown Swiss; 2.8 Croatian cattle Holstein; 24.3 population Simmental; 62.8
• Cattle population – 462,000 Figures • All cows – 168,000 and milk • Dairy and dual purpose cows – 151,000 • Milk recorded cows – 93,000 recording • Herds in milk recording – 5,000 (avg. 19) cows in 120000 Croatia 100000 Number of cows 80000 60000 40000 20000 0 2010 2011 2012 2013 2014 2015 2016 Year
Past – • Transition period – lack of powerful breeding organizations present – • Limitation factors future – Use of average bulls - do not provide expected genetic gain – Huge import of heifers – Small number of tested bulls from the national breeding program • Revitalization - genomic selection (GS)
• German-Austrian genomic evaluation GS in system Simmental • July 2013 breed • Close relation to Austrian and Bavarian breeding – Bull’s sires – Long-standing import of breeding heifers – Bull’s semen for artificial insemination (AI)
Goals of • To maintain and improve production of semen from domestic young bulls GS • Genomically tested young bulls • Future perspectives - potential bulls dams
GS in • German Holstein genomic selection system Holstein • March 2016 breed • Long-standing import of breeding heifers
Goals of • Produce young females to GS – Reduce import of breeding animals – Produce own replacement heifers – Ensure market of female breeding material • Perspectives – Intergenomics for small populations (IgHOL)
(Pre) • Young male and female candidates (from Croatian population) Selection – Progenies of the genomically and progeny criteria tested sires – Pedigree (interesting lines) – Parent average – Dam exterior
No of genotyped calves Year M F All Year F 2013 19 19 2016 72 2014 85 5 90 2017 24 2015 61 6 67 All 96 2016 40 3 43 2017 35 35 All 240 14 254
• Breeding Associations Partners • Croatian Agricultural Agency • AI centres
Selection Total merit index (GEBV) ≥ 130 criteria Without known genetic defects Seven young bulls were selected as bulls for AI
daily milk index meat index 150 142 128 Distribution 100 94 71 of GEBV for 50 main group 34 25 2 2 of traits 0 N fitness total merit index 150 139 137 100 71 66 50 41 34 4 3 3 0 100 101-112 113-124 125-129 100 101-112 113-124 125-129 130 Distribution of GEBV
Croatian bulls in Wamures Neustadt Aisch centre Mozilla
Selection Total merit index ≥ 150 criteria Without known genetic defects None reached these standards so far
daily milk index conformation index 51 50 47 40 Distribution 31 31 30 of GEBV for 20 13 main group 9 9 10 1 of traits 0 N total merit index reproduction index 52 50 45 40 34 29 30 20 15 12 10 4 1 0 100 101-112 113-124 125-136 136 100 101-112 113-124 125-136 Distribution of GEBV
• Benefits – Parentage verification GS - – Information about major gene/disease defects – Increased usage of semen from domestic bulls - benefits from 8% in 2012 to 23% in 2016 and – Bring back breeders confidence in the national breeding program obstacles • Obstacles – Small number of included breeders – Insufficient use of the ‘best bulls’ as bull sires – Adaption of German system to the national – A high price of GS – Lumpy skin disease
• Croatian Agricultural Agency - deeply Conclusions included in genomic services • Farm level - motivation of breeds to use benefits of genomics • National level – Breeding revitalization through production of genomically tested young bulls – Usage of semen from domestic bulls – Marketing semen of two young bulls internationally
Perspectives • InterGenomics Holstein service – Very good solution for small population - low input for quality service – No duplication of work process – fast implementation – Results for all animals at all scales of participation countries – An efficient way of connecting small populations
Thank you for your attention. Implementation of genomic selection in small populations Croatian case Marija Š pehar, Zdenko Ivkić , Maja Dražić , Zdravko Barać Croatian Agricultural Agency, http://www.hpa.hr/
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