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2013 | 31 | 4 |
Tytuł artykułu

Effect of dietary linseed and rapeseed supplementation on fatty acids profiles in the ostriches. Part 2. Fat

Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
The aim of the study was to determine the effect of linseed and rapeseed dietary supplementation on the fatty acids profiles of two ostrich fat depots: breast and subcutaneous (above the leg). The study was carried out on 40 ostriches raised in five groups – control (C) or with 4% (L4) or 8% (L8) linseed, or 5% (R5) or 10% (R10) rapeseed in the diet, from hatching to 12 months of age. Fat samples of breast (BF) and leg fat (LF) were taken for fatty acids analysis. Generally ostrich fat has high contents of PUFA (BF – 23.9, LF – 20.2 g/100 g FAME), especially linoleic acid (BF – 16.4, LF – 12.5 g/100 g FAME) and linolenic acid (BF – 5.7 and LF – 6.2 g/100 g FAME). Ostrich BF had a higher content of n-6 FA and total PUFA and lower n-3 FA than the LF. Both fat depots had desired PUFA/SFA ratios above 0.4, but not desirable n-6/n-3 ratios. BF had significantly higher (0.69)PUFA/SFA ratio than LF (0.55). Both L4 and L8 caused higher total PUFA content (27.8, 25.6 g/100 g FAME, respectively) and higher PUFA/SFA ratios (0.74, 0.75, respectively) and lower n-6/n-3 ratios (1.5, 1.8, respectively) compared to C. The rapeseed supplementation decreased the LA content in ostrich fats (R5- 14.1, R10-13.4g/100g FAME), causing a lower n-6/n-3 (4.1, 4.6, respectively) ratio compared to C (6.1). The supplementation of ostrich diets with linseed improved the nutritional value of ostrich fat by increasing the n-3 FA, total PUFA content and PUFA/SFA ratio. Although the leg fat had a lower PUFA content, both depots of ostrich fats can be recommended as valuable ingredients for value-added meat products fit for human consumption.
Wydawca
-
Rocznik
Tom
31
Numer
4
Opis fizyczny
p.347-354,ref.
Twórcy
autor
  • Institute of Genetics and Animal Breeding, Polish Academy of Sciences, Jastrzebiec, 05-552 Magdalenka, Poland
autor
  • Institute of Genetics and Animal Breeding, Polish Academy of Sciences, Jastrzebiec, 05-552 Magdalenka, Poland
autor
  • Department of Animal Hygiene and Environmental, Faculty of Animal Bioengineering, University of Warmia and Mazury in Olsztyn, 10-719 Olsztyn, Poland
  • Institute of Genetics and Animal Breeding, Polish Academy of Sciences, Jastrzebiec, 05-552 Magdalenka, Poland
  • Institute of Genetics and Animal Breeding, Polish Academy of Sciences, Jastrzebiec, 05-552 Magdalenka, Poland
autor
  • Division of Meat Technology, Department of Food Technology, Faculty of Food Sciences, Warsaw University of Life Sciences, 02-787 Warsaw, Poland
autor
  • Department of Human Nutrition and Consumer Sciences, Warsaw University of Life Sciences, Nowoursynowska 159c, 02-776 Warszawa, Poland
  • Department of Animal Sciences, University of Stellenbosch, P Bag X1, Matieland, 7602 South Africa
Bibliografia
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  • HOFFMAN L.C., BRAND M., CLOETE S., MULLER M., 2012 – The fatty acid composition of muscles and fat depots of ostriches as influenced by genotype. South African Journal of Animal Science 42, 256-265.
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Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
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