Milk productivity and physical and chemical properties of milk of red-motley cow breed

• Published in: IOP Conference Series: Earth and Environmental Science
• Main Authors: Efimova, L V, Zaznobina, T V, Frolova, O A, Ovcharenko, A S, Ivanova, O V, Ivanov, E A, Tereshchenko, V A
• Format: Article in Journal/Newspaper
• Language: unknown
• Published: IOP Publishing 2019
• Subjects: Krasnoyarsk Krai
• Online Access: http://dx.doi.org/10.1088/1755-1315/341/1/012063; https://iopscience.iop.org/article/10.1088/1755-1315/341/1/012063/pdf; https://iopscience.iop.org/article/10.1088/1755-1315/341/1/012063

Abstract 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.