A meta-analysis of the effect of pasture access on the lipid content and fatty acid composition of lamb meat. (November 2015)

• Record Type: Journal Article
• Authors: Popova, Teodora; Gonzales-Barron, Ursula; Cadavez, Vasco
• Is Part Of: Food research international. Volume 77:Part 3(2015:Nov.)
• Page Start: 476
• Page End: 483
• Publication Date: 2015-11
• Subjects: Meta-analysis -- Pasture -- Indoors rearing -- Lamb -- Monounsaturated -- Polyunsaturated -- Fatty acids; Food -- Analysis -- Periodicals; Food industry and trade -- Periodicals; Food industry and trade -- Canada -- Periodicals; Food Technology -- Periodicals; Food -- Periodicals; Food-Processing Industry -- Periodicals; Aliments -- Industrie et commerce -- Périodiques; Aliments -- Industrie et commerce -- Canada -- Périodiques; Aliments -- Recherche -- Périodiques; Food industry and trade; Canada; Periodicals; Electronic journals; 664.005
• DOI: 10.1016/j.foodres.2015.08.020
• Languages: English
• ISSNs: 0963-9969

Abstract

Abstract: A meta-analysis on the influence of the pasture on the lipid content and fatty acid profile in lamb meat was conducted. A total of 20 studies were selected and data on total lipid content, saturated, mono- and polyunsaturated fatty acids in lamb meat were extracted for two population groups, indoors, and pastured. Due to the high between-study heterogeneity, separate random-effects models were applied to the raw mean difference (effect size parameterization) for each of the outcomes. The results of the meta-analysis pointed that access to pasture tended to decrease the fat content in lamb, while increasing the saturated fatty acids (P < 0.05). The amounts of monounsaturated and n-6 polyunsaturated fatty acids were decreased (P < 0.05). On the other hand, grazing led to substantial increase in the content of n-3 polyunsaturated fatty acids, and decrease (P < 0.01) of the ratio n-6/n-3 in lamb meat, thus suggesting that pasture rearing can be recommended for improvement of meat dietetic quality. Highlights: Effect of pasture on lipid and fatty acids in lamb is evaluated by meta-analysis. Access to pasture tends to decrease the fat content in lamb but increased SFA. The contents of MUFA and n-6 PUFA are decreased in pastured lambs. Pasture increases the content of n-3 PUFA and decreases the ratio n-6/n-3 in lamb. Results suggest that grazing can be recommended to improve meat dietetic quality.