The authors used a fat protection method based on the process to form fatty acyl amide. The process involved reacting soybean oil with ethanolamine or butylamine to form hydroxyethylsoyamide and butylsoyamide. The effects of oleamides on rumen fermentation and some blood parameters of rumen cannulated sheep were compared to the effects of diet containing Magnapac (calcium salt of palm oil fatty acids) and untreated soybean oil. Different fat sources, when added at 3.5% of dietary dry matter (final ether extract content of the ration was near 6%), reduced acetate:propionate ratio and mean ruminal ammonia concentration. The proportion of acetate to propionate was higher in case of Magnapac than in case of soyamides. The lowest ratio of acetate to propionate was measured in sheep fed on diet supplemented with soybean oil. Plasma concentrations of total lipid, total cholesterol and triglyceride increased when diets containing fats were fed. Plasma C16:0 was the highest in sheep fed with Magnapac. All fat supplements increased plasma stearic acid content and decreased oleic acid content. Soybean oil and fatty acyl amides increased plasma linoleic acid content; the highest increase occured in case of butylsoyamide. From the investigated products, calcium salt of palm oil fatty acids (Magnapac) and butylsoyamide may be proposed to high yielding dairy cows to increase energy supply.
|Translated title of the contribution||Investigation of the physiological effect of different fat sources in sheep|
|Number of pages||8|
|Journal||Magyar Allatorvosok Lapja|
|Publication status||Published - Jul 1 2004|
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