The influence of extending the vaccination-to-slaughter interval of immunocastrated lambs on carcass cutting yield and meat quality of the Longissimus thoracis (LT) muscle was investigated in forty Dohne Merino lambs (8.5 months old; 53.7 ± 4.8 kg). Immunocastration booster vaccination intervals of six (IC6; n = 10) and four (IC4; n = 10) weeks prior to the slaughter age were used, with two weeks between primary and secondary vaccinations. A further 10 lambs were Burdizzo-castrated at 6.5 months old (B). The control treatment remained intact (R; n = 10). Prime cutting yields, LT muscle area, LT subcutaneous fat thickness and instrumental meat quality were accessed. Both castration methods increased LT fat thickness and decreased meat CIE a* (redness) values. Extending the vaccination-to-slaughter interval of immunocastrates increased the gastrointestinal tract fat and decreased meat redness. Immunocastration of male lambs can thus be used to manipulate backfat without negatively influencing carcass weight, cutting yield or meat quality.

延伸胴体切削产量和肉质immunocastrated羔羊接种到屠宰间隔的影响背最长胸外科（LT）在肌肉40个Dohne美利奴羊（; 53.7±4.8公斤8.5个月旧）进行了研究。 在屠宰年龄之前，分别使用了六周（IC6; n = 10）和四周（IC4; n = 10）的免疫cast壮加强疫苗接种间隔，初次和二次疫苗接种之间间隔了两周。在6.5个月大时，另外10头羔羊被Burdizzo cast割（B）。对照治疗保持完整（R；n = 10）。获得了原始切割产量，LT肌肉面积，LT皮下脂肪厚度和工具肉品质。两种去势方法均增加了LT脂肪的厚度，并降低了肉的CIE a *（红度）值。延长免疫cast剂的疫苗接种至屠宰间隔会增加胃肠道脂肪并减少肉类发红。因此，雄性羔羊的免疫铸造可用于操纵背back，而不会对car体重量，切割产量或肉质造成负面影响。