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首页> 外文期刊>Tropical Animal Health and Production >Effects of live weight at slaughter on fatty acid composition of Longissimus dorsi and Biceps femoris muscles of indigenous Lori goat
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Effects of live weight at slaughter on fatty acid composition of Longissimus dorsi and Biceps femoris muscles of indigenous Lori goat

机译：屠宰屠宰体重的影响，土着洛瑞山羊脂肪酸组成及二头肌股骨肌

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摘要

This study aimed to determine fatty acid (FA) composition of Longissimus dorsi (LD) and Biceps femoris (BF) muscles of an Iranian indigenous goat (Lori goat) at two live weights at slaughter (LWS). Twenty male Lori goats (5 to 8 months) raised in nomadic system were slaughtered either at LWS less than 20 kg (light) or LWS more than 30 kg (heavy). Carcass dressing and FA composition of intramuscular fat of LD and BF muscles as well as cholesterol content of LD muscle were determined. Heavy goats had higher dressing percentage than light ones (42.7vs. 39.3 %, P<0.01). The predominant n-6 FAwere C18: 2, and C20: 4 while C22: 5, C20: 5, C18: 3, C20: 3, and C22: 6 were the n-3 FA detected. Polyunsaturated and saturated FA contributed 22 % and 36 % of the total FA in both muscles, respectively. Palmitic acid (C16: 0) of LD was higher in heavy compared to the light goats (P<0.05). BF muscle had higher a-linolenic acid (18: 3 n-3) as percentage than LDmuscle (P<0.05). The ratio of n-6/n-3 FA and polyunsaturated/saturated FA were 3.8 and 0.6, respectively. Cholesterol content of LD muscle of light and heavy goats were 71.2 +/- 16 and 59.5 +/- 14 mg per 100 g fresh meat respectively. In conclusion, desirable PUFA/SFA (0.6) and n-3/n-6 ratio (3.8) found in indigenous Lori goat propose healthy source of lean meat for the consumers.
机译：本研究旨在根据屠宰场（LWS）的两种活力，确定伊朗土着山羊（LORI山羊）的脂肪酸（FA）组合物的脂肪酸（FA）和二头肌股骨（BF）肌肉。在游牧体系中提出的二十只雄性Lori山羊（5至8个月）在小于20公斤（光）或LW超过30公斤（重）的LW中被屠宰。确定了LD和BF肌肉肌肉脂肪的胴体敷料和FA组成以及LD肌肉的胆固醇含量。重山羊的敷料比光较高（42.7Vs。39.3％，P <0.01）。主要的N-6 Fawere C18：2和C20：4，而C22：5，C20：5，C18：3，C20：3和C22：6检测到的N-3 Fa。多不饱和和饱和Fa分别为两种肌肉中的22％和36％贡献了22％和36％。与轻山羊相比，LD的棕榈酸（C16：0）较高（P <0.05）。 BF肌肉具有较高的α-亚麻酸（18：3 n-3），百分比比LDMUS瓣（P <0.05）。 N-6 / N-3 FA和多不饱和/饱和Fa的比例分别为3.8和0.6。 LD肌肉的胆固醇含量和重型山羊的LD肌肉含量为71.2 +/- 16和59.5 +/- 14 mg，分别为每100克鲜肉。总之，在土着洛瑞山羊的贫民中发现的理想PUFA / SFA（0.6）和N-3 / N-6比率（3.8）为消费者提出健康的瘦肉来源。

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