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Protein composition of milk from Holstein–Friesian dairy cows and its relationship with the genetic variants A and B of κ‐casein and β‐lactoglobulin (Part I)
Author(s) -
MOLINA L H,
KRAMM J,
BRITO C,
CARRILLO B,
PINTO M,
FERRANDO A
Publication year - 2006
Publication title -
international journal of dairy technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.061
H-Index - 53
eISSN - 1471-0307
pISSN - 1364-727X
DOI - 10.1111/j.1471-0307.2006.00261.x
Subject(s) - milking , casein , lactation , composition (language) , milk protein , zoology , morning , genetic variants , food science , beta lactoglobulin , chemistry , biology , whey protein , biochemistry , genetics , genotype , botany , gene , pregnancy , linguistics , philosophy
The protein composition and the milk yield (morning milking) were studied in 10 Chilean Holstein–Friesian first lactation dairy cows during the spring season. In addition, the genetic variants A and B of κ‐casein (κ‐CN) and β‐lactoglobulin (β‐Lg) were also identified. The results showed that the casein content is significantly affected by the presence of B variant of κ‐CN. Moreover, positive interactions between the B variant of κ‐CN with AB of β‐Lg and the combination of A κ‐CN with AA of β‐Lg for the total protein content, were found.