Effects of dietary n-3 polyunsaturated fatty acids and ... - FINS

1 st WorkshopXIII International Feed Technology Symposiumof the samples were coocked in the oven at the temperature of 80-85 0 C until thetemperature in the centre of the meat reached 69 0 C (about 1 hour). After 24 hours, thesamples were sent to the laboratories of Food Technology Institute in Novi Sad, wherefatty acid analysis and sensory evaluation were performed.Fatty acid analysisThe preselected meat samples were homogenized with food processor and fat wasextracted from 1 g of each sample. From the extracted lipids fatty acid methyl esterswere prepared with boron trifluoride/methanol solution. Obtained samples were analyzedby a gas chromatograph Agilent 7890A system with FID, auto-injection module forliquid and headspace sampling, equipped with fused silica capillary column (DB-WAX30 m, 0.25mm, 0.50 um). The fatty acids were identified by comparison with standardsfrom Supelco 37 component FAME mix and data from PUFA NO.2, Animal sourceBCR-163 beef/pork fat blend. Results were expressed as mg of fatty acids per 100 g oftissue (mg/100g) and as a ratio between omega-6 and omega-3 fatty acids.RESULTS AND DISCUSSIONDuring the study the animals were readily fed and there was no illnesses or losses. Allpiglets were similar in size, healthy, with shiney and clean hair and vivacious. Results ofmonitoring the avarage weight, average weight gain, feed consumption and feedconversion ratio are shown in the Table 2.Table 2. Average weight and weight gain of piglets, feed consumption and feedconversion ratioAverage weight, kg035.day79.dayAverage weightgain, kg/day1-35.day35-79.dayFeedconsumption,kgFeedconversionratio, kg/kgControl 1,70 9,00 30,00 0,209 0,477 45,00 2,14Experimental 1,70 10,50 35,00 0,251 0,557 40,00 1,63From the results shown in Table 2, it is evident that piglets from the treatment group fedwith diet enriched with extruded linseed (Vitalan) consumed 40 kg of feed while thepiglets from the control group fed with the diet without enrichemnet consumed 45 kg offeed. Even though they consumed less feed, the piglets from the treatmnet group, with201