夏南牛肉用性能的屠宰试验报告

目的]为了系统掌握夏南牛屠宰试验标准。方法]经过对6头6月龄断奶的夏南牛公牛、6头12月龄架子公牛、10头18月龄育肥公牛的屠宰试验,结果]屠宰率、净肉率、眼肌面积、肉骨比、优质肉块比率、高档牛肉率,6月龄分别为:60.19%、48.04%、58.47cm2、4.34∶1、39.84%和17.40%;12月龄分别为:60.38%、49.71%、83.45cm2、5.18∶1、36.03%和18.94%;18月龄分别为:62.58%、52.36%、102.39cm2、5.60∶1、35.14%和17.62%。据对6头18月龄育肥公牛西冷和霖肉两个部位牛肉品质测定,蛋白质含量分别为:23.28%、22.71%;脂肪储量分别为2.61%、2.25%;蒸煮损失分别为:30.96%、31.74%;肌肉剪切力值分别为:3.95kg/cm2、4.32kg/cm2。结论]说明夏南牛早熟性强,可用于小牛肉生产,18月龄达到特级牛肉质量标准,也可生产高档牛肉。

Slaughter Experiment Report of Xia＇Nan Cattle

Objective]In order to systematically get the slaughter experiment standard. Method]The slaughter experiments were carried on six 6-month weaned XigNan cattle bulls, six 12-month store cattle, ten 18-month fatten bull. Result]The results showed that the slaughter rate, net meat percentage,loin eye area,meat hone rate,the ratio of high quality cut meat and high quality beef rate for 6-month weaners were 60.19%,48.04%,58.47 cm^2,4.34： 1, 39.84% and 17.40%. For 12-month cattle, they were 60.38%, 49.71%,83.45 cm^2 ,5.18 ： 1, 36.03% and 18.94%,and for the 18-month cattle were 62.58%,52.36%, 102.39 cm^2 ,5.60 ： 1,35.14% and 17.62% ,respectively. Based on the quality measurement of striploin and knuckle of six 18-month fatten bulls , the protein content was 23. 28% and 22. 71%. Fat content was 2.61% and 2.25%. Steam boiling loss was 30. 96% and 31.74%. And the muscle shear force was 3.95 kg /cmz and 4.32 kg/cm^2 ,respectively. Conclusion]The prematureness of Xia＇Nan cattle was good to use the production of baby beef. 18 months old age could up to shipper beef quality standard,so it could also used to product top grade beef.