Possibilities to breed for internal parasite resistance in Swedish beef breeds
The aim of this review is to investigate the possibilities to breed for parasite resistance in the Swedish purebred beef population, with starting point in the organic production. The present population structure, breeding objectives and genetic evaluation will be discussed as well as four common in...
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| Formato: | L3 |
| Lenguaje: | Inglés sueco |
| Publicado: |
SLU/Dept. of Animal Breeding and Genetics (until 231231)
2008
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| Materias: |
| _version_ | 1855571818681729024 |
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| author | Ahlqvist, Jenny |
| author_browse | Ahlqvist, Jenny |
| author_facet | Ahlqvist, Jenny |
| author_sort | Ahlqvist, Jenny |
| collection | Epsilon Archive for Student Projects |
| description | The aim of this review is to investigate the possibilities to breed for parasite resistance in the Swedish purebred beef population, with starting point in the organic production. The present population structure, breeding objectives and genetic evaluation will be discussed as well as four common internal parasites found among cattle in Sweden, registration of resistance by using faecal worm egg counts (FEC), the genetic background of FEC, and last the possibilities of using quantitative trait loci (QTL) and marker-assisted selection (MAS).
Due to strict regulations in organic production concerning the use of anthelminthics it is necessary to find alternative methods to control parasites, and breeding for increased parasite resistance may be one way to go. There are breeding programmes in operation today among some sheep breeds in Australia and New Zealand where FEC is used as a selection criterion. Studies on Aberdeen Angus indicate that breeding programmes for resistance could probably be implemented successfully among cattle from temperate regions as heritability estimates for FEC range from low to moderate. But there are still a number of issues that needs to be addressed. One major issue is the lack of available information. The Swedish dairy association runs the Swedish beef recording scheme, Kött Avel Produktion (KAP), where information is collected about the Swedish beef populations. At present FEC is not registered in KAP. |
| format | L3 |
| id | RepoSLU11160 |
| institution | Swedish University of Agricultural Sciences |
| language | Inglés swe |
| publishDate | 2008 |
| publishDateSort | 2008 |
| publisher | SLU/Dept. of Animal Breeding and Genetics (until 231231) |
| publisherStr | SLU/Dept. of Animal Breeding and Genetics (until 231231) |
| record_format | eprints |
| spelling | RepoSLU111602017-09-27T07:56:13Z Possibilities to breed for internal parasite resistance in Swedish beef breeds Möjligheter att avla för parasitresistens i svenska nötköttsraser Ahlqvist, Jenny animal breeding cattle parasite resistance The aim of this review is to investigate the possibilities to breed for parasite resistance in the Swedish purebred beef population, with starting point in the organic production. The present population structure, breeding objectives and genetic evaluation will be discussed as well as four common internal parasites found among cattle in Sweden, registration of resistance by using faecal worm egg counts (FEC), the genetic background of FEC, and last the possibilities of using quantitative trait loci (QTL) and marker-assisted selection (MAS). Due to strict regulations in organic production concerning the use of anthelminthics it is necessary to find alternative methods to control parasites, and breeding for increased parasite resistance may be one way to go. There are breeding programmes in operation today among some sheep breeds in Australia and New Zealand where FEC is used as a selection criterion. Studies on Aberdeen Angus indicate that breeding programmes for resistance could probably be implemented successfully among cattle from temperate regions as heritability estimates for FEC range from low to moderate. But there are still a number of issues that needs to be addressed. One major issue is the lack of available information. The Swedish dairy association runs the Swedish beef recording scheme, Kött Avel Produktion (KAP), where information is collected about the Swedish beef populations. At present FEC is not registered in KAP. Syftet med denna litteraturstudie är att undersöka möjligheterna att avla för parasitresistens i den svenska nötköttspopulationen, med utgångspunkt från den ekologiska produktionen. I studien tas dagens populationsstruktur upp, samt avelsmål, dagens avelsvärdering, fyra vanligt förekommande invärtes parasiter hos nötboskap i Sverige, hur resistens registreras med hjälp av faecal worm egg counts (FEC), den genetiska bakgrunden till FEC och sist möjligheter att använda quantitative trait loci (QTL) och marker-assisted selection (MAS) i avelsarbetet. På grund av de strikta reglerna i den ekologiska produktionen rörande användning av avmaskningsmedel, måste man finna andra alternativ för att kontrollera parasiter. Att avla för en ökad parasitresistens skulle kunna vara en väg att gå. I dagsläget finns det avelsprogram för vissa fårraser i Australien och Nya Zeeland som inkluderar resistens och där selektionen baseras på FEC. Skattningar av arvbarheten för FEC hos köttdjur är låga till medelhöga och studier på Aberdeen Angus visar att det skulle kunna vara möjligt att införa parasitresistens i avelsprogram för nötboskap från tempererade regioner. Innan detta är möjligt är det dock flera problem och frågeställningar som måste undersökas. I den svenska köttboskapskontrollen, Kött Avel Produktion (KAP) som drivs av Svensk Mjölk, sker ingen registrering av parasitresistens eller FEC och det är därför i dagens läge inte möjligt att avelsvärdera för denna egenskap. SLU/Dept. of Animal Breeding and Genetics (until 231231) 2008 L3 eng swe https://stud.epsilon.slu.se/11160/ |
| spellingShingle | animal breeding cattle parasite resistance Ahlqvist, Jenny Possibilities to breed for internal parasite resistance in Swedish beef breeds |
| title | Possibilities to breed for internal parasite resistance in Swedish beef breeds |
| title_full | Possibilities to breed for internal parasite resistance in Swedish beef breeds |
| title_fullStr | Possibilities to breed for internal parasite resistance in Swedish beef breeds |
| title_full_unstemmed | Possibilities to breed for internal parasite resistance in Swedish beef breeds |
| title_short | Possibilities to breed for internal parasite resistance in Swedish beef breeds |
| title_sort | possibilities to breed for internal parasite resistance in swedish beef breeds |
| topic | animal breeding cattle parasite resistance |