Dynamics of daily variability of the amount of fatty acids with different saturation of carbon bonds and their trans-isomers in the milk of black-and-white cows.

In the breeding enterprise in the summer, studies were carried out on the content of fatty acids with different saturation of carbon bonds and their trans-isomers in milk obtained during morning and evening milking. In the course of the study, it was found that in the evening milk, the level of all groups of fatty acids is significantly higher than in the morning milk, the difference ranges from 42.9% to 75.0%. Saturated fatty acids predominate in milk in general during the day, as well as for different periods, their level is 69% of the total amount of fatty acids and their trans-isomers. The trans-isomer level is 2%. The high variability of the amount of milk fatty acids and their trans-isomers was established from 59.5% for polyunsaturated fatty acids to 93.3% for trans-isomers of fatty acids, which indicates a high variability of traits and, as a consequence, the possibility of carrying out breeding work according to these indicators. [ABSTRACT FROM AUTHOR]

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