Bavarian State Research Center for Agriculture, Institute for Animal Nutrition and Feed Management, Prof.-Duerrwaechter-Platz 3, 85586 Poing, Germany.
Technical University of Munich, Liesel-Beckmann-Strasse 2, 85354 Freising, Germany.
Meat Sci. 2020 Nov;169:108209. doi: 10.1016/j.meatsci.2020.108209. Epub 2020 Jun 6.
A feeding and slaughter experiment was conducted to evaluate the carcass tissue composition and meat quality of growing modern type Fleckvieh (German Simmental) bulls. For the study, 72 bulls were customary reared and for the fattening period allocated to a normal energy and a high energy treatment group with 11.6 and 12.4 MJ ME/kg DM, respectively. Bulls were slaughtered in a serial slaughter trial with final live weights of 120, 200, 400, 600, and 780 kg. The weights of carcasses, carcass quarters, beef cuts and their tissues (muscle, tendon, fat and bone) as well as meat quality traits were recorded. Results showed that carcass fat increased during growth primarily at the expense of bone and subsidiary muscle tissue, while the tendon content remained constant. Meat quality traits like IMF, meat color and tenderness were superior in high weight groups. Feeding high energy rations did not lead to increased fat accretion, but increased daily gain during certain stages of the fattening period.
进行了一项饲养和屠宰实验，以评估生长型现代弗莱维赫牛（德国西门塔尔牛）公牛的胴体组织组成和肉质。在这项研究中，72 头公牛按照常规方式饲养，并在育肥期分为正常能量组和高能量组，能量分别为 11.6 和 12.4MJ ME/kg DM。公牛在连续屠宰试验中进行屠宰，最终活重分别为 120、200、400、600 和 780kg。记录了胴体、胴体四分体、牛肉切块及其组织（肌肉、肌腱、脂肪和骨骼）以及肉质特性的重量。结果表明，胴体脂肪在生长过程中主要通过消耗骨骼和附属肌肉组织而增加，而肌腱含量保持不变。高体重组的 IMF、肉色和嫩度等肉质特性较好。高能量日粮的喂养并没有导致脂肪堆积增加，但在育肥期的某些阶段增加了日增重。
