Abstract:
:Linkage between the amylase-1 (Am-1) locus and a quantitative trait locus influencing fat content in milk was studied in offspring from heterozygous sires of the Swedish Red and White dairy breed. The effect on bull breeding values for fat content was estimated as interactions between sire and paternal Am-1 allele using a model eliminating the direct effects of sire and Am-1 allele. There were strong indications of linkage, confirming results of previous studies. The interaction was caused by strong associations in 7 out of 14 site families. A test for within-family variance heterogeneity performed on the whole population of breeding bulls also supported the presence of a major gene for fat content in milk. The results indicate that there is genetic linkage between the Am-1 locus and a locus with large effect on milk fat content.
journal_name
Anim Genetjournal_title
Animal geneticsauthors
Andersson-Eklund L,Rendel Jdoi
10.1111/j.1365-2052.1993.tb00248.xsubject
Has Abstractpub_date
1993-04-01 00:00:00pages
101-3issue
2eissn
0268-9146issn
1365-2052journal_volume
24pub_type
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