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Effect of sex on meat quality characteristics of Qinchuan cattle

机译：性别对秦川牛肉品质特性的影响

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A total of 18 Qinchuan cattle, six intact males (IM), six castrated males (CM) and six females (FM), were used to investigate the effect of sex on the physicochemical characteristics (PCC) and fatty acid (FA) composition of the?Longissimus dorsimuscle (LDM). Obvious sex differences were found in the PCC of LDM: the IM group had higher shear value, pH, drip and cooking losses, and contents of ash and hydroxyproline (Hyp) than the CM and FM groups, as well as lower ether extract content and lightness. Both the IM and CM groups had lower water content and higher protein content than the FM group. Sex differences were also observed in contents of C14:0, C14:1, C18:1, saturated fatty acids (SFA), mono-unsaturated fatty acids (MUFA) and unsaturated fatty acids (UFA) between the IM and both the CM and FM groups but not between the CM and FM groups. The results indicated that sex is an important source of differences in meat quality of Qinchuan cattle because the castration and the meat characteristics of the CM group were more similar to the FM than the IM group.
机译：共有18头秦川牛，6头完整雄性（IM），6头cast割的雄性（CM）和6例雌性（FM）被用来研究性别对牛的理化特性（PCC）和脂肪酸（FA）组成的影响。 Longissimus dorsimuscle（LDM）。 LDM的PCC中存在明显的性别差异：IM组的剪切值，pH，滴落和蒸煮损失以及灰分和羟脯氨酸（Hyp）的含量均高于CM和FM组，并且醚提取物的含量较低。亮度。 IM和CM组的水含量和蛋白质含量均高于FM组。在IM和CM之间，C14：0，C14：1，C18：1，饱和脂肪酸（SFA），单不饱和脂肪酸（MUFA）和不饱和脂肪酸（UFA）的含量也存在性别差异。 FM组，但不在CM和FM组之间。结果表明，性别是秦川牛肉品质差异的重要来源，因为CM组的去势和肉质特征与FM组比IM组更为相似。

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