Estimation of Genetic Parameters for the Protein Profile in Danish Holstein Milk

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Abstract

Seven protein traits were measured in bovine milk by LC-MS using samples from 370 animals: Protein%, casein (CN)%, κ-CN%, αs 1-CN%, αs 2-CN%, β-CN%, β-lactoglobulin (β-LG%) and α-lactalbumin (α-LA%). A genomic relationship matrix calculated based on the HD SNP information of these animals was used in the univariate and bivariate analysis of the protein traits. Hertitabilities ranged from 0.77 for κ-CN% to 0 for αs 1-CN% (SE: 0.13-0.21). The genetic correlation between β-CN and κ-CN was low (0.01 ± 0.53) whereas the genetic correlation of αs 2-CN with both β-CN and κ-CN was high (< -0.90). Furthermore α-LA% and β-LG% were highly correlated (0.71 ± 0.14) and had a low correlation to CN% (0.08 ± 0.25; -0.08 ± 0.30, respectively). In this study κ-CN% and the whey proteins showed a high heritability whereas αs 1-CN%, αs 2-CN% and β-CN% showed a low heritability in Danish Holstein cattle
Original languageEnglish
Publication date17 Aug 2014
Number of pages3
Publication statusPublished - 17 Aug 2014
Event10th World Congress on Genetics Applied to Livestock Production (WCGALP) - The Westin Bayshore, 1601 Bayshore Drive, Vancouver, BC V6G 2V4, Vancouver, Canada
Duration: 17 Aug 201422 Aug 2014
Conference number: 10th

Conference

Conference10th World Congress on Genetics Applied to Livestock Production (WCGALP)
Number10th
LocationThe Westin Bayshore, 1601 Bayshore Drive, Vancouver, BC V6G 2V4
Country/TerritoryCanada
CityVancouver
Period17/08/201422/08/2014

Keywords

  • Dairy cattle
  • Protein profile
  • Genetic parameters

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