Department of Animal Science, University of Göttingen, Göttingen, Germany.
Meat Sci. 2012 Dec;92(4):739-44. doi: 10.1016/j.meatsci.2012.06.031. Epub 2012 Jun 28.
The prevention of unpleasant boar taint is the main reason for castration of male piglets. This study aimed to investigate how the malodorous compound skatole is affected by a single nucleotide polymorphism (g.2412 C>T at -586 ATG) in the porcine cytochrome p450 II E1 (CYP2E1) gene. 119 boars of two commercial Duroc-sired crossbred populations raised at different farms were investigated. Skatole and androstenone in backfat averaged 114±125 ng/g and 1206±895 ng/g melted fat, respectively. The frequency of the genotypes CC, CT, and TT was 25, 52, and 23%, respectively. CC boars had the highest average skatole levels (175 ng/g) compared to CT (92 ng/g) and TT (93 ng/g). Applying suggested sensory threshold levels for skatole (>150 ng/g) and androstenone (>2000 ng/g), 30% of the carcasses may be unacceptably tainted while the proportion of tainted carcasses is significantly higher within genotype CC (56.7%) compared to genotypes CT (24.3%) and TT (14.8%). Effective reduction of tainted carcasses appears feasible applying marker assisted selection.
预防令人不快的公猪异味是公猪去势的主要原因。本研究旨在探讨单核苷酸多态性（g.2412 C>T 在 -586 ATG）在猪细胞色素 p450 II E1（CYP2E1）基因中如何影响恶臭化合物粪臭素。对来自两个不同农场的两个商业杜洛克杂交种群的 119 头公猪进行了研究。背脂中的粪臭素和雄甾酮平均分别为 114±125 ng/g 和 1206±895 ng/g 融化脂肪。CC、CT 和 TT 基因型的频率分别为 25%、52%和 23%。与 CT（92ng/g）和 TT（93ng/g）相比，CC 公猪的粪臭素平均水平最高（175ng/g）。应用粪臭素（>150ng/g）和雄甾酮（>2000ng/g）的建议感官阈值水平，可能有 30%的胴体带有异味，而 CC 基因型（56.7%）的带异味胴体比例明显高于 CT（24.3%）和 TT（14.8%）基因型。应用标记辅助选择似乎可以有效减少带异味的胴体。
