Influence of Chinese breeds on pork quality of commercial pig lines
Influence of Chinese breeds on pork quality of commercial pig lines
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DOI：
10.4238/vol9-2gmr733
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发表时间：
2010-01-01
影响因子：
0.4
通讯作者：
Antunes, R. C.
中科院分区：
文献类型：
--
作者：
Cesar, A. S. M.;Silveira, A. C. P.;Antunes, R. C.
我们比较了来自同一父系和两个不同母系的猪的胴体和肉质，一个包括中国品种，一个没有。A系由1/4长白猪、1/2大白色猪、1/8中国猪（梅山、枫泾、嘉兴）、1/8大白色猪、杜洛克和皮特兰组成; B系由1/2大白色猪和1/2皮特兰组成。动物（N = 144）在活重为108 kg时屠宰。测量背膘厚度、瘦肉百分比、屠宰后24 h pH值、肉色、滴水损失百分比和肌内脂肪百分比，并采用完全随机设计的方差分析进行比较; BioEstat 5.0检验用于所有分析的平均值比较，显著性水平为5%。A线的背膘厚（12.78 mm）显著低于B线（15.90 mm）。屠宰后24小时测量的pH值在A系（5.68）中显著低于B系（5.84）。品系A的瘦肉率（61.21%）显著高于品系B（59.72%）。滴灌损失率在A系（2.73%）中显著高于在B系（2.23%）中。肌内脂肪百分比和肉色在品系之间没有显著差异。纳入中国品种产生了较高的瘦肉率和脂肪厚度降低，沿着增加的杂种优势，这是育种计划的重要特征。
We compared carcass and meat quality of pigs from the same sire line and two different dam lines, one that included Chinese breeds and one that did not. Line A consisted of 1/4 Landrace, 1/2 Large White, 1/8 Chinese breeds (Meishan, Fengjing, Jiaxing), and 1/8 Large White, Duroc and Pietrain, and line B consisted of 1/2 Large White and 1/2 Pietrain. The animals (N = 144) were slaughtered at a live weight of 108 kg. Backfat thickness, percentage of lean meat, pH 24 h after slaughter, meat color, percentage of drip loss, and percentage of intramuscular fat were measured and compared using analysis of variance in a completely randomized design; the BioEstat 5.0 test was applied for the comparison of means at a significance level of 5% for all analyses. Backfat was significantly lower for line A (12.78 mm) than for line B (15.90 mm). The pH measured 24 h after slaughter was significantly lower in line A (5.68) compared to line B (5.84). Percent lean meat was significantly higher for line A (61.21%) compared to line B (59.72%). Percentage drip loss was significantly higher in line A (2.73%) than in line B (2.23%). Percentage intramuscular fat and meat color were not significantly different between the lines. The inclusion of Chinese breeds produced a higher percentage of lean meat and reduced fat thickness, along with increased heterosis, which are important characteristics for breeding programs.