Amino acid composition of milk from Finnish Ayrshire cows and their crossbreeds with the Norwegian Red breed
Laen...
Kuupäev
2023
Kättesaadav alates
Autorid
Ruban, S.
Merzlov, S.
Matvieiev, М.
Borshch, O.V.
Borshch, O.O.
Bilkevich, V.
Lykhach, V.
Fedorchenko, M.
Bondarenko, L.
Ajakirja pealkiri
Ajakirja ISSN
Köite pealkiri
Kirjastaja
Estonian University of Life Sciences
Abstrakt
The purpose of this work was to study the effect of crossing of Finnish Ayrshire cows
with Norwegian Red breed under the conditions of the temperate climate of Ukraine on indicators
of the qualitative composition of milk, the content of essential amino acids (EAA) and their
biological value. The research was conducted at a commercial farm in the Poltava region
(50°02′39″ n.l., 33°51′09″ e.l.) using Finnish Ayrshire cows and their crosses with the Norwegian
Red breed. According to the indicators of fat, protein and lactose content in the group of crossbred
firstborns, purebred counterparts prevailed by: 0.22; 0.09 and 0.07%, respectively, and the energy
value of 1 kg of milk by 0.053 Mcal kg-1
. For milk protein of Finnish Ayrshires, the first limiting
EAA (lower than the recommended content in the reference protein) was methionine + cystine
(affects the rate of clot formation during cheese making), the content of which was 96.3%. In the
protein of crossbred cows EAA in which amino acid score (AAS) was less than 100%, were not
detected. Phenylalanine + tyrosine - 143.7% and leucine - 122.1%, which are aromatic amino
acids and affect the taste properties of milk, were the most excessive. The protein of crossbreds was
characterized by a slightly higher value of the total utilitarian coefficient, compared to purebred
counterparts (by 12.77%). Also, the aminogram of the crossbred group was closer to ‘ideal’.
Kirjeldus
Received: July 28th, 2023 ; Accepted: October 18th, 2023 ; Published: October 30th, 2023 ; Correspondence: matvieiev_mykhailo@nubip.edu.ua
Märksõnad
dairy cows, breeds, crossbreeding, milk content, milk protein, amino acids, articles