INFLUENCE OF CSN3 MARKER ON MILK COMPOSITION IN ROMANIAN BROWN AND ROMANIAN SIMMENTAL CATTLE FROM S.C.D.C.B. ARAD

DANIELA E. ILIE, ANUŢA MAGDIN, AURELIA SĂLĂJEANU, R. NEAMŢ, I. VINTILĂ

Abstract


Milk yield and composition in cattle are typical quantitative traitswhich are influenced by environmental factors and allelic variations. K-casein is a protein expressed in milk and, due to is polymorphism, may serve as a molecular marker for yield, composition and technological properties of milk. The objective of this study was to compare the relation between the genetic marker CSN3 (k-casein) and the observed milk traits in selected cattle groups. In our study we analyzed the milk traits of 32 Romanian Brown dairy cows and 54 Romanian Simmental dairy cows. The experiments described in this paper show clear evidence that -CSN3 genotype is involved in milk protein enrichment. The CSN3 gene of BB genotype showed a grate influence on protein yield. The relation between CSN3 genotype and milk protein was found to be significant in both cattle breed.


Keywords


milk protein; K-casein; genotypes frequencies

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LUCRARI STIINTIFICE ZOOTEHNIE SI BIOTEHNOLOGII (SCIENTIFIC PAPERS ANIMAL SCIENCE AND BIOTECHNOLOGIES)

ISSN print 1841 - 9364
ISSN online 2344 - 4576
ISSN-L  1841 - 9364
(former ISSN 1221-5287, E-ISSN 1841-9364)

PUBLISHER: AGROPRINT Timisoara, Romania
PAPER ACCESS: Full text articles available for free
FREQUENCY: Semiannual
PUBLICATION LANGUAGE: English
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Banat´s University of Agricultural Sciences and Veterinary Medicine "King Michael I of Romania" from Timisoara
Faculty of Animal Science and Biotechnologies
300645, Timişoara, Calea Aradului 119, Romania

E-mail: spasb [at] animalsci-tm.ro
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