FATTY ACID PROFILE AND MINERALS CONTENT IN MILK FROM COWS OF VARIOUS BREEDS OVER SPRING-SUMMER FEEDING PERIOD

The paper focused on the evaluation of a fatty acid profile and mineral component contents in milk obtained from cows of 5 breeds maintained in Poland. The studies covered 147 milk samples collected from cows of Polish Holstein-Friesian black-white (42) and red-white (26) varieties, Simental (31), Whitebacks (15) and Polish Red (33). Milk was sampled at the spring-summer season when dietary units included green forage. It was found that the milk gained from the cows of 3 breeds (in that two native), i.e. Whitebacks, Polish Red and Simental, had the fatty acid ratio most beneficial for human nutrition. Significantly higher proved to be a conjugated linoleic acid (CLA) level. The milk also contained more essential macro- (K, Ca, Na, Mg) and some microelements (Zn, Fe). A vital effect (beside the breed) was likely to have a feeding system of animals supplied mainly with pasture fodder.

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eISSN:	2083-6007
ISSN:	1230-0322

W latach 2022-2024 kwartalnik naukowy Polish Journal of Food and Nutrition Sciences realizuje projekt nr RCN/SP/0520/2021/1 finansowany ze środków budżetu państwa – Ministerstwo Edukacji i Nauki w ramach programu „Rozwój czasopism naukowych”. Dofinansowanie wynosi 120 000 zł. W ramach projektu podejmowane są działania zmierzające do podniesienia poziomu praktyk wydawniczych i edytorskich, zwiększenia wpływu czasopism na rozwój nauki oraz utrzymania się czasopism w międzynarodowym obiegu naukowym.

In the years 2022-2024, the scientific quarterly Polish Journal of Food and Nutrition Sciences accomplishes a project no. RCN/SP/0520/2021/1 financed from the state budged – Ministry of Education and Science Republic of Poland in the framework of a program “Development of scientific journals”. The financing amounts to 120,000 PLN. The program aims at improving the level of publishing and editing practices, increasing the impact of scientific journals on science development, and extending the international range of scientific journals.