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首页> 外文期刊>Czech Journal of Animal Science >The effect of sex and slaughter weight on intramuscular fat content and its relationship to carcass traits of pigs.
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The effect of sex and slaughter weight on intramuscular fat content and its relationship to carcass traits of pigs.

机译：性别和屠宰体重对猪肌肉内脂肪含量的影响及其与car体性状的关系。

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摘要

The carcass quality and intramuscular fat content of castrates and gilts were compared, and a possible dependence of intramuscular fat content on sex and slaughter weight was determined in the pig population of the Slovak Republic. A total of 129 pigs of 3 different genotypes were included in the experiment. After slaughter, the carcasses were weighed and backfat thickness was measured. The carcass dissection described by Walstra and Merkus was determined. Four prime cuts (shoulder, loin, ham and belly) were further dissected to meat, bones and fat with skin. Intramuscular fat content was analysed in a laboratory from the samples (100 g) of musculus longissimus dorsi. The results were analysed using SAS/STAT, and a linear model was used to determined the dependence of intramuscular fat content. Correlation coefficients between carcass traits and intramuscular fat were also calculated. The sex of pigs, weight of lean meat and weight of fatty parts had a significant effect on intramuscular fat content (P<0.0001 and P=0.0022), whereas no effect of the genotype and slaughter weight was observed. Significant differences between castrates and gilts were observed in almost all the traits: average backfat thickness (29.01 vs. 25.56 mm); percentage of meat (52.77 vs. 57.68%); intramuscular fat content (2.49 vs. 2.00%). Generally, the intramuscular fat in the pig population was insufficient (2.25%), therefore it would be desirable to include this trait in selection strategies in pig breeding..
机译：比较了cast割肉和小母猪的car体质量和肌肉内脂肪含量，并确定了斯洛伐克共和国猪群中肌肉内脂肪含量对性别和屠宰体重的可能依赖性。实验中共包括129种3种不同基因型的猪。屠宰后，对car体称重并测量背脂厚度。确定了Walstra和Merkus描述的car体解剖。进一步将四个主要肉块（肩膀，腰部，火腿和腹部）与皮肤一起切成肉，骨头和脂肪。在实验室中，从背最长肌样品（100 g）中分析了肌内脂肪含量。使用SAS / STAT分析结果，并使用线性模型确定肌内脂肪含量的依赖性。还计算了cas体性状与肌内脂肪之间的相关系数。猪的性别，瘦肉重量和脂肪部分重量对肌肉内脂肪含量有显着影响（P <0.0001，P = 0.0022），而对基因型和屠宰体重没有影响。几乎所有性状都观察到cast割和后备母猪之间的显着差异：平均背f厚（29.01比25.56 mm）;肉类百分比（52.77比57.68％）;肌内脂肪含量（2.49比2.00％）。通常，猪群中的肌内脂肪不足（2.25％），因此希望在猪育种的选择策略中包括此特征。

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