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首页> 美国卫生研究院文献>Food Science of Animal Resources >Comparison of longissimus dorsi Fatty Acids Profiles in Gansu Black Yak and Chinese Yellow Cattle Steers and Heifers
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Comparison of longissimus dorsi Fatty Acids Profiles in Gansu Black Yak and Chinese Yellow Cattle Steers and Heifers

机译：甘肃黑Ya牛和中国黄牛Ste牛和小母牛的背最长肌脂肪酸谱比较

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摘要

Fatty acid (FA) composition of longissimus dorsi intramuscular fat in Black Yak and Chinese Yellow Cattle were evaluated in 44 Black Yak and 41 Chinese Yellow Cattle of both genders. Interactions of species with gender were observed for total saturated fatty acid (SFA), unsaturated fatty acid (UFA), monounsaturated fatty acid (MUFA), polyunsaturated fatty acid (PUFA), palmitic acid, stearic acid, oleic acid, linolenic acid, arachidonic acid, EPA, and DHA concentrations, as well as PUFA/SFA ratio in the longissimus dorsi (p<0.05). The SFA percentage was greater in yellow cattle than yak in both genders but the species difference in heifers was greater than in steers (p<0.05). Yak had greater UFA, MUFA and PUFA percentages than yellow cattle in both steers and heifers (p<0.05) but the difference between yak and yellow cattle heifers was greater than yak and yellow cattle steers. The percentages of inolenic acid, arachidonic acid, eicosapentaenoic acid, and docosahexaenoic acid; and PUFA/SFA were greater in yak than yellow cattle in both steers and heifers (p<0.05). In addition, the ratio of n-6-3 PUFA in yak was lesser than in yellow cattle (p<0.05). These results indicated that FA composition generally differed between yak and yellow cattle but the differences were not the same in heifers as compared to steers. Results also suggested that species differences in FA composition tended to favor Black Yak over Chinese Yellow Cattle, indicating that the longissimus dorsi of Black Yak may have a higher nutritive value than that of Chinese Yellow Cattle and potential for development as a desirable natural product.
机译：在44头黑Ya牛和41只黄Yellow牛中，评价了黑and牛和黄牛中背最长肌肌内脂肪的脂肪酸（FA）组成。对于总饱和脂肪酸（SFA），不饱和脂肪酸（UFA），单不饱和脂肪酸（MUFA），多不饱和脂肪酸（PUFA），棕榈酸，硬脂酸，油酸，亚麻酸，花生四烯酸，观察到物种与性别的相互作用背最长肌中的酸，EPA和DHA浓度以及PUFA / SFA比值（p <0.05）。两种性别中，黄牛的SFA百分比均大于than牛，但小母牛的物种差异大于公牛（p <0.05）。 ste牛和ers牛的UFA，MUFA和PUFA百分比均高于黄牛（p <0.05），但牛和黄牛小母牛之间的差异大于牛和黄牛。亚麻酸，花生四烯酸，二十碳五烯酸和二十二碳六烯酸的百分比； ste牛和小母牛的牛和PUFA / SFA均比黄牛高（p <0.05）。此外，牛中n-6 / n-3 PUFA的比例要低于黄牛（p <0.05）。这些结果表明，牛和黄牛的FA组成通常有所不同，但与母牛相比，小母牛的差异并不相同。结果还表明，FA组成的物种差异往往倾向于黑Ya牛而不是中国黄牛，这表明黑Ya牛的背最长背可能比中国黄牛具有更高的营养价值，并有发展为理想的天然产品的潜力。

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