王鹏, 陈林, 徐幸莲, 赵颖颖, 李可, 姜喃喃, 邢通, 王晓明. 喷淋通风宰前静养对肉鸡夏季运输屠宰肉品质的影响[J]. 农业工程学报, 2018, 34(22): 275-281. DOI: 10.11975/j.issn.1002-6819.2018.22.034
    引用本文: 王鹏, 陈林, 徐幸莲, 赵颖颖, 李可, 姜喃喃, 邢通, 王晓明. 喷淋通风宰前静养对肉鸡夏季运输屠宰肉品质的影响[J]. 农业工程学报, 2018, 34(22): 275-281. DOI: 10.11975/j.issn.1002-6819.2018.22.034
    Wang Peng, Chen Lin, Xu Xinglian, Zhao Yingying, Li Ke, Jiang Nannan, Xing Tong, Wang Xiaoming. Effects of pre-slaughtering holding with water-misting sprays and forced ventilation on meat quality of broiler after summer transport[J]. Transactions of the Chinese Society of Agricultural Engineering (Transactions of the CSAE), 2018, 34(22): 275-281. DOI: 10.11975/j.issn.1002-6819.2018.22.034
    Citation: Wang Peng, Chen Lin, Xu Xinglian, Zhao Yingying, Li Ke, Jiang Nannan, Xing Tong, Wang Xiaoming. Effects of pre-slaughtering holding with water-misting sprays and forced ventilation on meat quality of broiler after summer transport[J]. Transactions of the Chinese Society of Agricultural Engineering (Transactions of the CSAE), 2018, 34(22): 275-281. DOI: 10.11975/j.issn.1002-6819.2018.22.034

    喷淋通风宰前静养对肉鸡夏季运输屠宰肉品质的影响

    Effects of pre-slaughtering holding with water-misting sprays and forced ventilation on meat quality of broiler after summer transport

    • 摘要: 该课题研究了一种新型雾化喷淋-立体通风的宰前静养装置对肉鸡夏季运输后肉质的影响。共分为以下2个处理:1)运输组(transport and rest, TR),45 min运输,1 h休息;2)雾化喷淋-立体通风组(transport followed water-misting sprays and three-dimensional forced ventilation, TWFR),45 min运输,15 min雾化喷淋-立体通风,45 min休息。与TR组相比,TWFR处理显著地提高了肉鸡的pH24值(24 h)(P<0.05)。TWFR处理也显著降低了鸡肉的滴水损失和蒸煮损失(P<0.05),这种作用与明显降低的核磁共振T21弛豫时间和显著较高的拉曼光谱酪氨酸双峰(I850/I830)比值(P<0.05)有关。TWFR和TR处理后的肉拉曼光谱的α-螺旋和β-折叠含量呈现显著差异(P<0.05),这种差异可归因于宰前静养措施引起的蛋白质构象的变化。本研究表明,雾化喷淋-立体通风是夏季肉鸡屠宰中一种有效的肉质保证技术。

       

      Abstract: The effects of novel holding treatment after summer transport of broilers on meat quality were investigated. 2 groups were studied: 1) TR group, which underwent 45 min transport followed by 1h rest (TR); 2) TWFR group, which underwent 45 min transport followed by 15 min water-misting sprays with three-dimensional forced ventilation and 45 min rest (TWFR). Compared with TR, TWFR treatment significantly increased pH24 value (24 h)of meat (P<0.05). TWFR treatment was also found to have significantly reduced 2.02% drip loss and 3.92% cook loss (P<0.05), which were associated with a clear shift toward lower relaxation times of nuclear magnetic resonance T21 position and significantly higher Raman spectrum tyrosine doublet ratio (I850/I830) (P<0.05). The significant difference in Raman spectrum indicates protein function diversity between raw TWFR and TR meats (P<0.05) on α-helix and β-sheet content, respectively. The diversity may be attributed to the difference of the protein conformation caused by pre-slaughter treatment. In conclusion, this study demonstrated that TWFR is an effective pre-slaughtering method to assure meat protein function during summer.

       

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