BIOLOGICALLY ACTIVE AND ANTICANCEROGENIC SUBSTANCES IN THE LIPID FRACTION OF EWES MILK ON SYNTHETIC POPULATION BULGARIAN MILK BREED

Silvia Ivanova, Tania Ivanova, Emilia Raicheva, Liubomir Angelov

Abstract: The survey was carried out in the late stage of lactation with sheep from Synthetic population Bulgarian milk during 32 days using a balanced protein, energy and mineral nutrition. The total fat content in the milk increased from 6.85 to 8.13% during the investigated period. The protein content reduced significantly during the lactation period from 6.47 to 5.75%. The lactose content in the milk varied in narrow range from 4.59 to 4.82%. For the first time from May to June the fatty acid composition in the ewe’s milk was studied. The total content of saturated fatty acids (SFA) was insignificantly reduced from 70.99 to 67.14 g/100g fat. The decrease in the concentration of SFA during the investigated period was accompanied by an increase in the proportion of MUFA (to 4.97%) and reduction of the content of PUFA (0.55%). The concentration of conjugated fatty acids (CLA) in milk ranged from 0.78 to 1.10 g/100g, which indicated that the high level of concentrate nutrition in the diet led to a low content of CLA in the ewe’s milk of SPBM.

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Date published: 2023-02-01