Physicochemical composition of cow’s milk from different udder quarters

Trajkovska, Biljana and Risteski, Blagoja and Karapetkovska-Hristova, Vesna (2023) Physicochemical composition of cow’s milk from different udder quarters. In: 7th International Conference on Agricultural and Food Science, September 28th – October 1st, Turkey.

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Abstract

[Background] The research was conducted to examine the variation in cow’s milk composition at the
udder quarter level.
[Methods] Milk samples were collected in dairy farm in Pelagonia region on one occasion from 20
lactating cows at udder quarter level. The milk was analyzed for content of fat, protein, lactose, dry
matter (SNF), density, casein, pH using LactoScope FTIR Advanced, and electrical conductivity
(EC) with HANNA HI 98192 EC/TDS/NaCl/Resistivity conductometer. Fluoro-opto-electronic
method, BENTLEY SOMACOUNT CC 150 was used for determination of somatic cell count (SCC).
At the same time, milk samples were divided into four categories representing the udder quarters
(PL- front left, PD - front right, ZL – back left and ZD – back right).
[Results] From the total number of analyzed samples (N=80), 9 refers to dry quarters (11.25%), and
9 refers to quarters with clinical mastitis (11.25%). These results indicate that the prevalence of
clinical mastitis on the farm is quite high, which points to serious problems in the dairy herd. Also,
somatic cell counts were higher than the legal regulations in our country (≤ 400,000 SCC/mL) at all
four quarters. From the total number of examined cows (N=20), it can be noted that the most common
changes are manifested in the front quarters where SCC were dramatically increased compared with
back quarters. Additionally, significant changes (p<0.05) were noticed at SCC and electrical
conductivity (EC) between front and back udder quarters. No significant changes (p>0.05) were
noticed at the other physicochemical parameters.
[Conclusion] The effect somatic cell count on different quarter level needs to be further studied at
cows with normal and increased number of somatic cell count.

Item Type:	Conference or Workshop Item (Poster)
Subjects:	Scientific Fields (Frascati) > Agricultural Sciences > Animal and diary science
Divisions:	Faculty of Biotechnical Sciences
Depositing User:	Prof. d-r Biljana Trajkovska
Date Deposited:	18 Oct 2023 20:50
Last Modified:	18 Oct 2023 20:50
URI:	https://eprints.uklo.edu.mk/id/eprint/9034

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