Open AccessMilk productivity and physical and chemical properties of milk of red-motley cow breed
Author(s) -
Л. В. Ефимова,
T.V. Zaznobina,
Olga Frolova,
А. С. Овчаренко,
О. В. Иванова,
Е. А. Иванов,
V.A. Tereshchenko
Publication year - 2019
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/341/1/012063
Subject(s) - lactose , breed , dry matter , lactation , motley , zoology , urea , composition (language) , biology , food science , milk fat , biochemistry , linseed oil , pregnancy , linguistics , philosophy , genetics
Increasing the milk yield and improving the qualitative composition of milk are crucial tasks in Russia and foreign countries. In Krasnoyarsk krai, red-motley cows occupy the largest share of all breeds (69.7%). Studies were conducted in the Arefyevskoye JSC of Krasnoyarsk krai on red-and-white breed cows. Physical and chemical properties of milk were determined in the laboratory of selection control of milk quality. Studies have shown that in red-motley breed cows, the milk yield, fat and dry matter increases with aging, and the number of somatic cells decreases. A high reliable relationship between the signs of qualitative composition of milk (fat - urea, lactose - urea, dry matter - urea, protein - dry matter, fat - dry matter and lactose - dry matter) in all lactation cows was established. For 305 days of lactation, the correlation between the signs of milk yield - fat and milk yield - protein was negative, the correlation between fat and protein content was positive.