Journal
MEAT SCIENCE
Volume 98, Issue 4, Pages 607-614Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.meatsci.2014.06.008
Keywords
Skatole; Lamb; Off-flavour; Alfalfa (Medicago sativa); delta 15N; Sensory analysis
Categories
Funding
- European Community [222623]
- Brazilian Ministry of Education Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior (Capes) [Capes/PSDE-No. BEX 9718/11-7]
- Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq)
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We investigated the influence of the level of fresh alfalfa supplementation on fat skatole and indole concentration and chop sensory attributes in grazing lambs. Four groups of nine male Romane lambs grazing a cocksfoot pasture were supplemented with various levels of alfalfa for at least 60 days before slaughter. Perirenal fat skatole concentration was higher for lambs that consumed alfalfa than for those that consumed only cocksfoot. The intensity of 'animal' odour in the lean part of the chop and of 'animal' flavour in both the lean and fat parts of the chop, evaluated by a trained sensory panel, increased from the lowest level of alfalfa supplementation onwards and did not increase further with increasing levels of alfalfa supplementation. The outcome of this study therefore suggests that these sensory attributes may reach a plateau when perirenal fat skatole concentration is in the range 0.16-024 mu g/g of liquid fat. (C) 2014 Published by Elsevier Ltd.
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