| 1. |
|
|
| 2. |
|
|
| 3. |
|
|
| 4. |
|
|
| 5. |
- Braam, Åsa, et al.
(författare)
-
Förord: BLUP-index 2011
- 2012
-
Ingår i: Hingstar verksamma inom svensk halvblodsavel. ; , s. 253-254
-
Tidskriftsartikel (populärvet., debatt m.m.)
|
|
| 6. |
- Sörme, Louise, et al.
(författare)
-
Matavfall i butik : analys av samhällsförändringar
- 2019
-
Rapport (övrigt vetenskapligt/konstnärligt)abstract
- Rapporten beskriver hur matavfall/matsvinn under det senaste decenniet har gått från en icke-fråga till en viktig miljöfråga, i samhället och i livsmedelshandeln. Den är resultatet av ett forskningsprojekt inom Forskning om uppföljningsmått för samhällsomställningar och miljömålen.Antalet artiklar om matsvinn har ökat från 22 (2008) till 720 (2017). Genom publicering av statistik om dess matsvinnets omfattning var fokus till en början på svinnet som resursslöseri. Sedan 2016 har matavfall/matsvinn i butik rapporteras som ett gemensamt problem genom hela kedjan; producent till konsument, samt för myndigheteroch politiker. Samtidigt finns en tendens att framställa problemet som någon annans, enligt intervjustudien.Mätningens roll för att synliggöra frågan, formeringen av aktörsnätverket (SaMMa), mediernas roll som katalysator och blåslampa, samt attitydförändring hos konsumenter och i branschen har samverkat för att sätta fokus på matsvinnet.Forskningen har finansierats av Naturvårdsverkets miljöforskningsanslag till stöd för Naturvårdsverket och Havs- och vattenmyndighetens arbete med uppföljningen av miljömålen.
|
|
| 7. |
- Viklund, Åsa, et al.
(författare)
-
Genetic variation in competition traits at different ages and time periods and correlations with traits at field tests of 4-year-old Swedish Warmblood horses
- 2010
-
Ingår i: Animal. - 1751-7311 .- 1751-732X. ; 4, s. 682-691
-
Tidskriftsartikel (refereegranskat)abstract
- For many years, the breeding value estimation for Swedish riding horses has been based on results from Riding Horse Quality Tests (RHQTs) of 4-year-olds only. Traits tested are conformation, gaits and jumping ability. An integrated index including competition results is under development to both get as reliable proofs as possible and increases the credibility of the indexes among breeders, trainers and riders. The objectives of this study were to investigate the suitability of competition data for use in genetic evaluations of horses and to examine how well young horse performance agrees with performance later in life. Competition results in dressage and show jumping for almost 40 000 horses from the beginning of the 1960s until 2006 were available. For RHQT data of 14 000 horses judged between 1988 and 2007 were used. Genetic parameters were estimated for accumulated competition results defined for different age groups (4 to 6 years of age, 4 to 9 years of age and lifetime), and for different birth year groups. Genetic correlations were estimated between results at RHQT and competitions with a multi-trait animal model. Heritabilities were higher for show jumping than dressage and increased with increasing age of the horse and amount of information. For dressage, heritabilities increased from 0.11 for the youngest group to 0.16 for lifetime results. For show jumping corresponding values increased from 0.24 to 0.28. Genetic correlations between competition results for the different age groups were highly positive (0.84 to 1.00), as were those between jumping traits at RHQT and competition results in show jumping (0.87 to 0.89). For dressage-related traits as 4-year-old and dressage competition results the estimated genetic correlations were between 0.47 and 0.77. We suggest that lifetime results from competitions should be integrated into the genetic evaluation system. However, genetic parameters showed that traits had changed during the over 35-year period covered due to the development of the sport, which needs to be considered in future genetic evaluations.
|
|
| 8. |
- Ablondi, Michela, et al.
(författare)
-
Performance of Swedish Warmblood fragile foal syndrome carriers and breeding prospects
- 2022
-
Ingår i: Genetics Selection Evolution. - : Springer Science and Business Media LLC. - 0999-193X .- 1297-9686. ; 54
-
Tidskriftsartikel (refereegranskat)abstract
- Background Warmblood fragile foal syndrome (WFFS) is a monogenetic defect caused by a recessive lethal missense point mutation in the procollagen-lysine, 2-oxoglutarate 5-dioxygenase 1 gene (PLOD1, c.2032G>A). The majority of homozygous WFFS horses are aborted during gestation. Clinical signs of affected horses include fragile skin, skin and mucosa lacerations, hyperextension of the articulations, and hematomas. In spite of its harmful effect, a relatively high frequency of WFFS carriers has been found in Warmblood horses, suggesting a heterozygote advantage. Thus, in this study our aims were to: (1) estimate the frequency of WFFS carriers in the Swedish Warmblood breed (SWB), (2) estimate the effect of WFFS carrier genotype on performance traits in two SWB subpopulations bred for different disciplines, and (3) simulate the potential effects of balancing selection and different selection strategies on the frequency of carriers. Methods In total, 2288 SWB sport horses born between 1971 and 2020 were tested for the WFFS mutation and had estimated breeding values (EBV) for ten traditional evaluating and 50 linear descriptive traits. Results The frequency of WFFS carriers calculated from a pool of 511 randomly selected SWB horses born in 2017 was equal to 7.4% and ranged from 0.0 to 12.0% among the whole set of tested SWB horses, starting from 1971 till 2020. The effect of the WFFS carrier genotype was significant for several EBV mainly related to movements and dressage traits and especially for horses not bred for the show jumping discipline. Using simulation, we showed that balancing selection can maintain a recessive lethal allele in populations such as the SWB breed over generations and that the frequency is expected to slowly decrease in absence of balancing selection. Finally, we showed that selection against carrier sires can result in a more rapid decrease of the frequency of the mutant allele over time. Conclusion Further research is needed to confirm the apparent association between equine performance and the WFFS carrier genotype. Identification of such associations or new causative mutations for horse performance traits can serve as new tools in horse breeding to select for healthy, sustainable, and better performing horses.
|
|
| 9. |
|
|
| 10. |
|
|
