Search

Establishing genetic diversity in the population is an essential first step for the sustainable conservation of valuable genetic resources under threat of extinction. Two local goat breeds, Kalofer long-haired (KLH) and Bulgarian screw-horned long-haired (BSHL), were genotyped using a panel of 14 microsatellite markers to determine their population structure and differentiation. The overall mean number of alleles was 8.82, higher in BSHL (9.71) as compared with KLH (7.92). The Ho and He values were almost equal for BSHL (0.75; 0.76, respectively) and KLH goats (0.74; 0.76, respectively). The value of the coefficient of population differentiation (FST) was very low (0.024), indicating only 2% genetic differentiation between the two goat breeds. The structure and PCoA analyses revealed considerable overlap between the two breeds, although some flocks of each breed differentiated from the common genetic pool. The results obtained in the present study can serve to differentiate purebred animals that are the basis of a selection process and a breeding strategy with a view to the conservation of these two local goat breeds. [ABSTRACT FROM AUTHOR]

The aim of this study was to analyse the available in 2021 pedigree and geographic distribution data of the Rhodope Tsigai sheep. Some of the important population parameters, including generation interval and effective population size were calculated. The potential threats related to the concentration of the breed in the region of the Rhodope Mountains were estimated via the number of animals kept in farms in a circle with 25 and 50 km radius. [ABSTRACT FROM AUTHOR]

Natural sources of trans isomers of fatty acids are primarily the milk fat and other fats from animal origin. The study was conducted with yogurt containing 2, 3 and 4.5% for the determination of biologically active and trans fatty acids and qualitative assessment of the fat fraction. Yogurt with 4.5% fat have a highest content of saturated fatty acids SFA-3.13 g/100 g product, monounsaturated fatty acids MUFA-1.18 g/100 g product, polyunsaturated fatty acids PUFA-0.15 g/100 g product, oleic-0.98 g/100 g product, linoleic-0.08 g/100 g product, trans fatty acids-0.14 g/100 g product, conjugated linoleic acid CLA-0.03 g/100 g product as long as 2% yogurt is the poor of biologically active fatty acids-oleic acid-0.43 g/100 g product, linoleic-0.04 g/100 g product, trans fatty acids-0.09 g/100 g product, CLA-0.01 g/100 g product. Lipid preventive score, index of atherogenicity and thrombogenicity is highest at 4.5% yogurt-9.50 g/100 g product, 3.02 and 2.82. The analyzed yoghurts are characterized as a food product with a low content of trans fatty acids-0.06 to 0.14 g/100 g product and a low content of saturated fatty acids in the yogurt with 2% fat-1.45. [ABSTRACT FROM AUTHOR]

The presented study is addressed to the growing market interest to the ewe's milk as a natural source of essential components, like conjugated linoleic acids (CLA) ω-3 and ω-6 polyunsaturated fatty and vaccenic acid, described to be effective substances for prevention of different human diseases. The work was focused on the transfer of certain organic components (fatty acids) in the food chain "plants-animal products-men" in the endemic regions of the Rhodope Mountain. The submitted multidisciplinary investigation offers new knowledge in the field of healthy nutrition of sheep raised in mountain regions and the dynamic changes of organic nutrients (saturated and unsaturated fatty acids) in the meadow vegetation during the grazing period. With the detailed mapping of the pasture areas, an evaluation of exactly distribution of unsaturated and saturated fatty acids in the meadow vegetation as important substrate for the following transformation in the animal organism in form of biological active, isomers - conjugated fatty acids (CLA), vaccenic acid, ω-3 and ω-6 polyunsaturated fatty acids can be provided. The detailed study of essential fatty acids, especially its derivatives - conjugated linoleic acids (CLA) and natural trans fatty acids in the ewe's milk took an important place in the investigation. The dynamic changes in the available precursors in plant species affect the MUFA and PUFA-profiles of ewe's milk and provide additional information to clarify the mechanism of CLA-synthesis and the content of natural trans fatty acids in raw milk. Settlement the human organism with biologically active and anticancerogenic substances can not be fully achieved by the consumption of milk and dairy products, so it is necessary to use rational nutrition and supplements/food additives/based on omega-3, omega-6 and CLA. [ABSTRACT FROM AUTHOR]