The influence of pre-slaughter transport and lairage on meat quality in pigs of two genotypes
The influence of pre-slaughter transport and lairage on meat quality in pigs of two genotypes
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屠宰前运输和饲养对两种基因型猪肉品质的影响
DOI：
10.1017/s0003356100004566
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发表时间：
1990
期刊：
影响因子：
--
通讯作者：
S. Kestin
中科院分区：
文献类型：
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作者：
P. Warriss;S. Brown;E. Bevis;S. Kestin
在一项实验中，肉类和畜牧委员会 Stotfold 养猪发展单位饲养的 239 头猪被屠宰，活重为 63 公斤，检查基因型（肉系或白系）、屠宰前运输时间（1 或 4 小时）和饲养时间（2 或 21 小时）对胴体和肉质的影响。选择屠宰前处理是为了模拟良好的商业程序，并涵盖大部分英国屠宰生猪可能经历的运输和饲养时间范围。肉用猪的屠宰率更高，胴体更重，米的横截面积更大。背最长肌。两种基因型的背膘厚度相似。白线猪的肝脏较重，生产的肉可能具有较低的 PSE 发病率。较长的运输时间增加了活体重损失。它降低了白系猪的胴体产量，但不会降低肉系猪的胴体产量。运输对肉品质没有重大影响。较长的饲养时间（在此期间按照法律饲养猪）会导致胴体产量减少，但肝脏重量增加，并允许补充一些肝糖原。它还降低了水中的最终 pH 值。半膜肌和m.内收肌。两种基因型的猪对屠宰前处理的反应没有重要或一致的差异。
Two hundred and thirty-nine pigs reared at the Meat and Livestock Commission's Stotfold Pig Development Unit and derived from the four major breeding companies in the UK were slaughtered at 63 kg live weight in an experiment which examined the effect of genotype (Meat-line or White-line), pre-slaughter transport time (1 or 4 h) and lairage time (2 or 21 h) on carcass and meat quality. The pre-slaughter handling was chosen to simulate good commercial procedures and cover the range of transport and lairage times probably experienced by a large proportion of British slaughter pigs. Meatline pigs had higher killing-out proportions and heavier carcasses, with increased cross-sectional area of the m. longissimus dorsi . Backfat thickness was similar in the two genotypes. White-line pigs had heavier livers and produced meat which potentially had a lower incidence of PSE. Longer transport time increased live-weight loss. It reduced carcass yield in the White-line but not in the Meat-line pigs. Transport had no major effects on meat quality. Longer lairage, during which the pigs were fed in compliance with the law, resulted in reduced carcass yield but increased liver weight and allowed some repletion of liver glycogen. It also reduced ultimate pH values in the m. semimembranosus and m. adductor . There were no important or consistent differences in the way pigs of the two genotypes responded to pre-slaughter handling.