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)
2006
MOLINA, L.H. | KRAMM, J. | Brito, C. | CARRILLO, B. | PINTO, M. | Ferrando, A.
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.
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