Clasen, Julie
(2021).
Crossbreeding as a strategy in dairy cattle herds.
Diss. (sammanfattning/summary)
Sveriges lantbruksuniv.,
Acta Universitatis Agriculturae Sueciae, 1652-6880
ISBN 978-91-7760-839-4
eISBN 978-91-7760-840-0
[Doctoral thesis]
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PDF
9MB |
Abstract
This thesis aimed to explore benefits of dairy crossbreeding at herd level and form recommendations for dairy farmers, advisors, and breeding companies. A survey study revealed that Swedish dairy farmers can be divided into two groups: those supporting crossbreeding and those not supporting it. SimHerd Crossbred and ADAM were used to simulate various crossbreeding strategies and estimate the economic effects. Both terminal and rotational crossbreeding involving Swedish Red and Swedish Holstein increases the yearly economic return in organic and conventional Swedish production systems, compared with purebreeding Swedish Holstein. Also, terminal crossbreeding combined with the genetic benefits of sexed semen and genomic testing of purebred animals is economically beneficial. Terminal crossbreeding between a low-yielding native breed and a high-yielding breed improves the economic result. Combined with marketing of niche products, terminal crossbreeding may be beneficial as a strategy for conserving native dairy cattle breeds. Genomic breeding values for crossbred animals could be predicted with a model using summary statistics from purebred reference populations with almost as high prediction accuracies as if full genotype and phenotype information was available. Future research is needed on crossbreeding schemes utilizing genomic data and the effect of crossbreeding on the environmental footprint.
Authors/Creators: | Clasen, Julie |
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Title: | Crossbreeding as a strategy in dairy cattle herds |
Series Name/Journal: | Acta Universitatis Agriculturae Sueciae |
Year of publishing : | 2021 |
Number: | 2021:81 |
Number of Pages: | 96 |
Publisher: | Swedish University of Agricultural Sciences |
ISBN for printed version: | 978-91-7760-839-4 |
ISBN for electronic version: | 978-91-7760-840-0 |
ISSN: | 1652-6880 |
Language: | English |
Publication Type: | Doctoral thesis |
Article category: | Other scientific |
Version: | Published version |
Full Text Status: | Public |
Subjects: | (A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 404 Agricultural Biotechnology > Genetics and Breeding |
Keywords: | crossbreeding, heterosis, dairy cattle, sexed semen, beef semen, genomic prediction |
URN:NBN: | urn:nbn:se:slu:epsilon-p-114305 |
Permanent URL: | http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-114305 |
ID Code: | 26111 |
Faculty: | VH - Faculty of Veterinary Medicine and Animal Science |
Department: | (VH) > Dept. of Animal Breeding and Genetics |
Deposited By: | SLUpub Connector |
Deposited On: | 15 Nov 2021 15:26 |
Metadata Last Modified: | 15 Nov 2021 15:31 |
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