| Free range rearing of pigs with access to pasture grazing - effect on fatty acid composition and lipid oxidation products. | |
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MedLine Citation:
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PMID: 22062255 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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The influence of free-range rearing, RN genotype and sex on different pig meat quality traits, including intramuscular fatty acid composition and levels of lipid oxidation products, were studied. A total of 60 Hampshire crossbred pigs were reared outdoors for two months with access to green feed, while 60 others were kept indoors, in a 120-m(2)-large pen, throughout the rearing period. From these 120 animals a subsample of 44 animals was chosen for meat quality analysis. Of the three factors studied, the RN genotype had the largest influence on basic technological meat quality traits, whereas the rearing conditions and sex had limited effects. However, outdoor rearing resulted in higher levels of polyunsaturated fatty acids in the intramuscular fat (P=0.026) and in an increased level of vitamin E (P=0.030) compared with the pigs that had been reared indoors. The sex and RN genotype of the animals also had an effect on the fatty acid profile: females had higher levels of unsaturated fatty acids (P=0.003) as well as lower levels of saturated fatty acids (P=0.011) than castrated males. Carriers of the RN(-) allele expressed a higher sum of omega-3 fatty acids (P=0.047) and C22:5 (P=0.012) than did the non-carriers. In a storage study where meat from free-range and indoor reared pigs was stored for 3 months at-20°C, it was shown that the lipid oxidation product malondialdehyde was formed at increased levels in animals that had a higher lean meat percentage than others, i.e. females that were carriers of the RN(-) gene and that were reared outdoors. |
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Authors:
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V Nilzén; J Babol; P C Dutta; N Lundeheim; A C Enfält; K Lundström |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Meat science Volume: 58 ISSN: 0309-1740 ISO Abbreviation: Meat Sci. Publication Date: 2001 Jul |
Date Detail:
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Created Date: 2011-11-08 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101160862 Medline TA: Meat Sci Country: England |
Other Details:
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Languages: eng Pagination: 267-75 Citation Subset: - |
Affiliation:
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Department of Food Science, Swedish University of Agricultural Sciences, Box 7051, S-750 07 Uppsala, Sweden. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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