University of Khartoum

Fat Content and Fatty Acid Composition of Sudanese Goat and Lamb Carcasses at Retail outlets

Fat Content and Fatty Acid Composition of Sudanese Goat and Lamb Carcasses at Retail outlets

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Title: Fat Content and Fatty Acid Composition of Sudanese Goat and Lamb Carcasses at Retail outlets
Author: Saeed, Mayada Faroug Ibrahim
Abstract: The objective of this study was to evaluate fat content and fatty acid (FA) composition of Sudanese goats and lamb at retail outlet. A total of 25 carcasses each of goats or lamb (desert ecotypes) were used in this study, of average age between 6 months to one year, reared under rangeland conditions. Samples from longissimus dorsi muscle (LD), kidney fat (KF), and subcutaneous fat (SF) were obtained from each carcass. Gas chromatography was used for quantify FAs. One-way ANOVA was used to compare differences between fat content and FA composition of each goats or lamb tissues. T test was used to compare goat and lamb fat and FAs . In goat carcasses, the fat contents were 78.21%, 73.76% and 3.6% for KF, SF and LD, respectively. The most abundant FAs were oleic, palmitic, and stearic acid. Oleic acid was higher (P≤ 0.05) in LD muscle (30.04%) than in SF (25.29%) and KF (17.86%). The stearic acid was greater (P≤ 0.05) in KF (28.04%) compared to SF (27.29%) and LD (25.37%). Palmitic acid was higher (P≤ 0.05) in KF (29.54%) than in SF (25.32) and LD (20.8%). The linoleic acid and α-linolenic acids were higher (P≤ 0.05) in muscle compared to SF and KF. The total desirable FA, which comprise stearic acid plus total unsaturated FA were greater (P≤ 0.05) in LD (72.05%), followed by SF (60.86%), and the least (50.7%) was found in KF. In lamb, the fat contents were 80.76%, 75.57%, and 4.02% for KF, SF, and LD, respectively. The most abundant FAs were oleic, palmitic, and stearic acid. The highest of oleic acid was found in LD muscle (29.2%) followed by SF (27.22%), and the least (22.12%) was found in KF. The highest of palmitic acid (30.17%) was found in KF. For stearic acid, the highest was recorded in SF (33.32%). Linoleic acid was 9.35%, 4.2%, and 1.6% for LD, SF and KF, respectively. Α-linolenic was higher (P≤ 0.05) in LD (0.7%) than in SF (0.5). The total desirable FAs were greater (P≤ 0.05) in LD (67.36%), followed by SF (65.74%), and the least (55.83%) was found in KF. Lamb had higher (P≤ 0.05) proportion of fat content, palmitic, and linoleic acid; however, goats had higher proportion of linolenic and desirable FA than lamb in LD muscle. In SF, there was no significant difference between lamb and goats in fat content. However, stearic, oleic, linoleic acid, and the desirable FA were higher in lamb than in goat. In KF, also there was no significant difference in fat content; however, goat had a higher (P≤ 0.05) percentage of linoleic acid. Nevertheless, lamb had higher (P≤ 0.05) percentage of oleic and desirable FA than goats. The Sudanese goat meat contains more nutritional beneficial FA compared to Sudanese lamb
Description: 95 Pages
URI: http://khartoumspace.uofk.edu/123456789/27397
Date: 2018


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