Characteristics of the correlations between milk components of dairy goats, meat-dairy goats and dairy-meat ones
https://doi.org/10.26897/0021-342X-2022-5-108-119
Abstract
Dairy goat breeding is developing dynamically in the world and in Russia. To scientifically substantiate the breeding strategy of dairy goats, meat-dairy goats and dairy-meat ones, it is necessary to expand information about the composition of goat milk and the nature of correlations between its components. In the article, the composition of goat milk of dairy goats, meat-dairy goats and dairy-meat ones is considered in the comparative aspect. The correlation coefficients between the indicators studied by infrared spectroscopy and flow cytometry using automatic CombiFoss 7 DC analyzer are presented. It was found that milk of dairy-meat and meat-dairy goats significantly exceeded milk of dairy goats in terms of the mass fraction of fat, protein, levels of saturated and unsaturated fatty acids, lactose and urea. At the same time, the level of differential cells was significantly lower. The nature of the relationship between mass fraction of fat and other components of milk in goats with different severity of milk productivity was the same both in strength and in orientation. A high positive relationship (r = 0.65…0.99) was revealed between the mass fraction of fat and the content of fatty acids, both saturated (SFA, LCFA, MCFA) and unsaturated (MUFA, PUFA, SCFA). Differences in the nature of the relationship between the content of casein and lactose, casein and DSCC were established. For milk of dairy-meat and meat-dairy goats, it was low negative (r = –0.27 and –0.31), for milk of dairy goats – low positive (r = 0.29 and 0.28). Differences were also found between mass fraction of true protein and fatty acids, MDB and the level of somatic cells. Mass fraction of true protein in milk of dairy goats was weakly negatively correlated with LCFA, SCFA, KSK and DSCC (r = –0.16…–0.32), in milk of dairy-meat and meat-dairy goats this relationship was weakly positive (r = 0.14…0.26).
About the Authors
V. I. Trukhachev
Russian State Agrarian University - Moscow Timiryazev Agricultural Academy
Russian Federation
Russian Federation
Vladimir I. Trukhachev, DSc (Ag), Professor, DSc (Ec), Professor, RAS Academician (Full Member), Rector
49 Timiryazevskaya Str., Moscow, 127434
phone: (499) 976–12–96
M. I Selionova
Russian State Agrarian University - Moscow Timiryazev Agricultural Academy
Russian Federation
Russian Federation
Marina I. Selionova, DSc (Bio), RAS Professor, Head of the Department of Animal Breeding, Genetics and Biotechnology
49 Timiryazevskaya Str., Moscow, 127434
phone: (968) 266–33–03
A.M. M. Aybazov
Russian State Agrarian University - Moscow Timiryazev Agricultural Academy
Russian Federation
Russian Federation
Ali-Magomet M. Aybazov, DSc (Ag), Professor
49 Timiryazevskaya Str., Moscow, 127434
phone: (938) 351–01–02
M. Yu. Gladkikh
Russian State Agrarian University - Moscow Timiryazev Agricultural Academy
Russian Federation
Russian Federation
Marianne Yu. Gladkikh, PhD (Ag), Associate Professor of the Department of Animal Breeding, Genetics and Biotechnology
49 Timiryazevskaya Str., Moscow, 127434
phone: (919) 970–72–97
I. A. Lashneva
Federal Science Center for Animal Husbandry named after Academy Member L.K. Ernst
Russian Federation
Russian Federation
Irina A. Lashneva, post-graduate student, Junior Research Associate of the Laboratory of Analysis and Modeling of Breeding Processes in Animal Husbandry
60 Dubrovitsy v., Podolsk City District, Moscow Region, 142132
phone: (926) 413–41–78
D. D. Sidorenko
Russian State Agrarian University - Moscow Timiryazev Agricultural Academy
Russian Federation
Russian Federation
Dar’ya D. Sidorenko, Master’s Degree Student of the Department of Animal Breeding, Genetics and Biotechnology
49 Timiryazevskaya Str., Moscow, 127434
phone: (999) 836–79–07
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Review
For citations:
Trukhachev V.I., Selionova M.I., Aybazov A.M., Gladkikh M.Yu., Lashneva I.A., Sidorenko D.D. Characteristics of the correlations between milk components of dairy goats, meat-dairy goats and dairy-meat ones. IZVESTIYA OF TIMIRYAZEV AGRICULTURAL ACADEMY. 2022;(5):108-119. (In Russ.) https://doi.org/10.26897/0021-342X-2022-5-108-119
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