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Effects of dietary fat on the saturated and monounsaturated fatty acid metabolism in growing pigs

The effect of dietary fats differing in fatty acid (FA) composition on the metabolism of saturated FA (SFA) and monounsaturated FA (MUFA) in growing pigs was investigated.

Friday 22 September 2017 (2 months 19 days ago)
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The deposition of FA in the body and the fate of individual dietary FA were assessed after slaughter. Gilts with an initial body weight (BW) of 60 kg were used as experimental animals. Six pigs were slaughtered at 60 kg BW, while further 18 pigs received three isoenergetic and isonitrogen experimental diets containing linseed oil, rapeseed oil or beef tallow at 50 g/kg diet until they reached 105 kg (six pigs per group). The chemical composition and the content of FA in the whole body were determined and compared across groups.

Regardless of dietary treatment, the whole body contained similar amounts of protein, fat and total FA. The total accumulation (percentage of net intake and de novo production) of SFA and MUFA was similar in all groups, but the processes of elongation and desaturation of SFA and MUFA depended upon the type of FA added to the diet. A high dietary content and intake of MUFA inhibits desaturation compared to SFA- and PUFA-rich diets, whereas a high SFA content and intake lowers elongation rate. The increasing net intake of total SFA and MUFA was associated with a lower total de novo production of these FA in the whole body of pigs.

Stanisława Raj, Grzegorz Skiba, Monika Sobol & Barbara Pastuszewska. Effects of dietary fat on the saturated and monounsaturated fatty acid metabolism in growing pigs. Archives of Animal Nutrition Vol. 71 , Iss. 4,2017. http://dx.doi.org/10.1080/1745039X.2017.1326269

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