Influence of feed selection on fatty acid composition of fattening pig meat
2012
Marković, Radmila (Faculty of Veterinary Medicine, Belgrade (Serbia)) | Todorović, Milica (Faculty of Veterinary Medicine, Belgrade (Serbia)) | Trbović, Dejana (Institute of Meat Hygiene and Technology, Belgrade (Serbia)) | Ž.Baltić, Milan (Faculty of Veterinary Medicine, Belgrade (Serbia)) | Radulović, Stamen (Faculty of Veterinary Medicine, Belgrade (Serbia)) | Šefer, Dragan (Faculty of Veterinary Medicine, Belgrade (Serbia)) | Jovanović, Dragoljub (Faculty of Veterinary Medicine, Belgrade (Serbia))
Fatty acids in adipose tissue of pigs can be synthesized from non-lipid substrates or direct by absorption of fatty acids from feedstuffs. Thus, for example, glucose obtained by digestion of corn and barley increases the proportion of saturated fatty acids (SFA) in relation to the polyunsaturated fatty acids (PUFA), which is not the case when the so-called oil fractions from concentrated feed are used in pig nutrition. However, as already mentioned, the fats are commonly used in pig nutrition, because they increase the energy value of feedstuffs and the amount of grain (especially corn) used in the pigs' diet is decreased (Lampe et al., 2006). Soybean, sunflower and other oilseeds that contain fatty acids of n-3 series and fatty acids of n-6 series are commonly used in pig nutrition. Flaxseed contains about 35 to 45% of oil compared to the dry material mass (Karleskind, 1996), and more than 70% of the oil consists of PUFA, which primarily is alpha-linolenic acid (ALA), an essential n-3 fatty acid and linoleic acid (LA), n-6 essential fatty acid. The aim of this study was to investigate the possibility of using different feed for pigs to increase content of n-3 fatty acids in adipose tissue, as well as to improve the ratio of n-6/n-3 fatty acid, which is known to be disbalanced in the modern way of people diet.
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