Reference : Genetic analysis of lactoferrin content in bovine milk
Scientific journals : Article
Life sciences : Genetics & genetic processes
Life sciences : Food science
Life sciences : Animal production & animal husbandry
http://hdl.handle.net/2268/18145
Genetic analysis of lactoferrin content in bovine milk
English
Arnould, Valérie mailto [Université de Liège - ULg > Sciences agronomiques > Zootechnie >]
Soyeurt, Hélène mailto [Université de Liège - ULg > Sciences agronomiques > Zootechnie >]
Gengler, Nicolas mailto [Université de Liège - ULg > Sciences agronomiques > Zootechnie >]
Colinet, Frédéric mailto [Faculté Universitaire des Sciences Agronomiques de Gembloux - FUSAGx > > Biologie animale et microbienne > >]
Georges, Marielle [Faculté Universitaire des Sciences Agronomiques de Gembloux - FUSAGx > > Biologie animale et microbienne > >]
Bertozzi, Carlo mailto [Association Wallonne de l'Elevage - AWE > > > >]
Portetelle, Daniel mailto [Université de Liège - ULg > Chimie et bio-industries > Biologie animale et microbienne >]
Renaville, Robert mailto [Université de Liège - ULg > Chimie et bio-industries > Biologie animale et microbienne >]
2009
Journal of Dairy Science
American Dairy Science Association
92
5
2151-2158
Yes (verified by ORBi)
International
0022-0302
1525-3198
Champaign
IL
[en] Animals ; Cattle/genetics ; Fats/analysis ; Female ; Gene Frequency ; Lactation/genetics ; Lactoferrin/chemistry/genetics ; Milk/chemistry/cytology ; Milk Proteins/analysis ; Polymorphism, Single Nucleotide/genetics ; Spectrophotometry, Infrared
[en] Bovine lactoferrin (LF) is mainly present in milk and shows important physiological and biological functions. The aim of this study was to estimate the heritability and correlation values of LF content in bovine milk with different economic traits as milk yield (MY), fat and protein percentages, and somatic cell score (SCS). Variance components of the studied traits were estimated by REML using a multiple-trait mixed model. The obtained heritability (0.22) for LF content predicted using mid-infrared spectrometry (pLF) suggested the possibility of animal selection based on the increase of LF content in milk. The phenotypic and genetic correlation values calculated between pLF and SCS were moderate (0.31 and 0.24, respectively). Furthermore, a preliminary study of bovine LF gene polymorphism effects was performed on the same production traits. By PCR, all exons of the LF gene were amplified and then sequenced. Three new polymorphisms were detected in exon 2, exon 11, and intron 8. We examined the effects of LF gene polymorphisms of exons 2, 4, 9, 11, and 15, and intron 8 on pLF, MY, fat and protein percentages, and SCS. The different observed effects did not reach a significant level probably because of the characteristics of the studied population. However, the results were promising, and LF may be a potential indicator of mastitis. Further studies are necessary to evaluate the effect of genetic selection based on LF content on the improvement of mastitis resistance.
Researchers
http://hdl.handle.net/2268/18145
10.3168/jds.2008-1255
http://jds.fass.org/cgi/reprint/92/5/2151
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