Zomeño Cristina, Gispert Marina, Brun Albert, Carabús Anna, Soler Joaquim, Font-I-Furnols Maria
IRTA-Food Quality and Technology Program, Finca Camps i Armet s/n, 17121 Monells, Girona, Spain.
IRTA-Infrastructure Platform, Veïnat de Sies s/n, 17121 Monells, Girona, Spain.
Meat Sci. 2022 Oct;192:108909. doi: 10.1016/j.meatsci.2022.108909. Epub 2022 Jul 14.
This study compares performance, body and carcass composition among castrated (CM), immunocastrated (IM) and entire males (EM), and females (FE) at 30, 70, 100 and 120 kg of body weight (total of n = 92; 20-24/sex type). Overall, IM had similar growth and feed intake to CM and greater than EM and FE. At each slaughter stage, IM had a lower killing-out percentage than CM and FE, in line with their heavier liver and kidneys. Flare fat proportion and backfat thickness on the ham and at the last rib level were similar for IM, EM and FE, and these were lower than CM. In EM and FE, backfat between the 3rd and 4th last ribs was lower and carcass lean content was higher than in CM, whereas IM were intermediate and not different to the other sexes. Females showed the largest ham proportion, this cut being leaner and less fatty than in CM. Belly proportion was higher in CM than in EM.
本研究比较了去势公猪（CM）、免疫去势公猪（IM）、未去势公猪（EM）和母猪（FE）在体重达30、70、100和120千克时的生产性能、体况和胴体组成（总共n = 92头；每种性别类型20 - 24头）。总体而言，IM的生长速度和采食量与CM相似，且高于EM和FE。在每个屠宰阶段，IM的屠宰率低于CM和FE，这与其肝脏和肾脏较重有关。IM、EM和FE的火腿部和最后肋骨处的花油比例和背膘厚度相似，且低于CM。在EM和FE中，倒数第3和第4肋骨之间的背膘较薄，胴体瘦肉含量高于CM，而IM处于中间水平，与其他性别无差异。母猪的火腿比例最大，该部位比CM的更瘦、脂肪更少。CM的腹部比例高于EM。
