Fatty acid composition of lamb meat from the autochthonous Jezersko–Solčava breed reared in different production systems |
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| Affiliation: | 1. Australian Cooperative Research Centre for Sheep Industry Innovation, University of New England, Armidale, NSW 2351, Australia;2. School of Veterinary and Life Sciences, Murdoch University, Murdoch, WA 6150, Australia;1. Instituto de Ganadería de Montaña, CSIC-Universidad de León, Finca Marzanas s/n, 24346, Grulleros, León, Spain;2. Facultad de Veterinaria, Universidad de León, Campus Vegazana s/n, 24071, León, Spain;1. Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Harbin, Heilongjiang 150081, PR China;2. Institute of Animal Husbandry of Heilongjiang Agricultural Academy of Sciences, Harbin, Heilongjiang 150086, PR China;1. Animal Science, USDA, ARS, Grazinglands Research Laboratory, El Reno, OK 73036, USA;2. Agronomy, Division of Plant and Soil Sciences, West Virginia University, Morgantown, WV 25813, USA;3. Agronomy, Department of Plant, Soil, and Microbial Sciences, Michigan State University, East Lansing, MI, USA;4. Meat Science, Department of Animal Sciences, The Ohio State University, Columbus, OH 43210, USA |
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| Abstract: | Thirty two autochthonous Jezersko–Solčava lambs were used to investigate the effect of production (pasture vs. stable) and weaning system (suckling vs. weaned) on fatty acid composition of Longissimus dorsi intramuscular fat in a 2 × 2 factorial design. Pasture lambs had lower intramuscular fat concentration (P < 0.0001) more PUFA and trans C18:1, more ALA (P = 0.0322), ARA (< 0.0001) and EPA (0.0149) but less SFA (P < 0.0001) than stable lambs. Weaning system affected PUFA (P = 0.0040) and MUFA (P = 0.0070) but not SFA and trans C18:1 fatty acids. The interaction of production system and weaning system was significant mainly for trans C18:1 and trans C18:2 fatty acids. Finally, lamb meat from all four treatments which are traditionally used in rearing of Jezersko–Solčava lambs are favourable from the nutritive point of view, due to their low n − 6/n − 3 ratio. |
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