Crossbreeding in dairy cattle
The aim of this literature review is to give an overview of the differences between pure- and crossbreeding systems. Crossbreeding is a mating system with individuals of different lines or breeds. It is one of several breeding strategies in dairy production used to increase the economic profit. The...
| Main Author: | |
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| Format: | M2 |
| Language: | Inglés Swedish |
| Published: |
SLU/Dept. of Animal Breeding and Genetics (until 231231)
2011
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| Subjects: |
| _version_ | 1855570499826876416 |
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| author | Lundgren, Angelica |
| author_browse | Lundgren, Angelica |
| author_facet | Lundgren, Angelica |
| author_sort | Lundgren, Angelica |
| collection | Epsilon Archive for Student Projects |
| description | The aim of this literature review is to give an overview of the differences between pure- and crossbreeding systems. Crossbreeding is a mating system with individuals of different lines or breeds. It is one of several breeding strategies in dairy production used to increase the economic profit. The use of crossbreeding increases due to changes in the dairy market and an increase of inbreeding among purebred Holstein. The main benefit of crossbreeding is heterosis, which is the improvement in genetic level in a hybrid offspring above the average of the parent breeds. Results from several studies have shown that crossbreeding is the most profitable breeding strategy, with a high level of heterosis for traits associated with fertility, health and overall fitness along with only a slightly reduced milk production. Even if more research is needed to give accurate conclusions, the most profitable breeding system, according to this review, was the three way rotational crossbreeding system. |
| format | M2 |
| id | RepoSLU2904 |
| institution | Swedish University of Agricultural Sciences |
| language | Inglés swe |
| publishDate | 2011 |
| publishDateSort | 2011 |
| publisher | SLU/Dept. of Animal Breeding and Genetics (until 231231) |
| publisherStr | SLU/Dept. of Animal Breeding and Genetics (until 231231) |
| record_format | eprints |
| spelling | RepoSLU29042012-04-20T14:20:54Z Crossbreeding in dairy cattle Korsningsavel med mjölkkreatur Lundgren, Angelica crossbreeding breeding strategy heterosis dairy cattle korsningsavel avelsstrategi heterosis mjölkkreatur The aim of this literature review is to give an overview of the differences between pure- and crossbreeding systems. Crossbreeding is a mating system with individuals of different lines or breeds. It is one of several breeding strategies in dairy production used to increase the economic profit. The use of crossbreeding increases due to changes in the dairy market and an increase of inbreeding among purebred Holstein. The main benefit of crossbreeding is heterosis, which is the improvement in genetic level in a hybrid offspring above the average of the parent breeds. Results from several studies have shown that crossbreeding is the most profitable breeding strategy, with a high level of heterosis for traits associated with fertility, health and overall fitness along with only a slightly reduced milk production. Even if more research is needed to give accurate conclusions, the most profitable breeding system, according to this review, was the three way rotational crossbreeding system. Syftet med denna litteratursammanfattning är att ge en översikt av skillnader mellan olika avelssystem med rena raser eller korsningar. Korsningsavel är ett avelssystem med individer av olika avelslinjer eller raser. Det är en av flera avelsstrategier som används inom mjölkproduktionen för att förbättra lönsamheten. Korsningsavel har ökat i omfattning på grund av förändringar i mejeribranschen och en ökad inavel i Holsteinrasen. Huvudorsaken till att korsningsavel kan vara lönsamt är heterosis, vilket innebär en förbättring av den genetiska nivån hos avkomman jämfört med medeltalet av föräldraraserna. Resultat från flera studier har visat att korsningsavel är den mest lönsamma avelsstrategin, med en hög nivå av heterosis för egenskaper associerade med fertilitet, hälsa och generell fitness samtidigt med en begränsad minskning av mjölkproduktion. Även om mer forskning behövs för att ge säkra slutsatser så var avelssystemet med den högsta lönsamheten, enligt denna forskning, rotationskorsning med tre raser. SLU/Dept. of Animal Breeding and Genetics (until 231231) 2011 M2 eng swe https://stud.epsilon.slu.se/2904/ |
| spellingShingle | crossbreeding breeding strategy heterosis dairy cattle korsningsavel avelsstrategi heterosis mjölkkreatur Lundgren, Angelica Crossbreeding in dairy cattle |
| title | Crossbreeding in dairy cattle |
| title_full | Crossbreeding in dairy cattle |
| title_fullStr | Crossbreeding in dairy cattle |
| title_full_unstemmed | Crossbreeding in dairy cattle |
| title_short | Crossbreeding in dairy cattle |
| title_sort | crossbreeding in dairy cattle |
| topic | crossbreeding breeding strategy heterosis dairy cattle korsningsavel avelsstrategi heterosis mjölkkreatur |