Carcass and Meat Characteristics of Bulls from Arsi, Boran, Harar and Holstein Frisian Crosses Cattle Breeds Finished under Similar Level of Concentrate Supplementation

动物科学期刊(英文) Pub Date : 2021-01-26 DOI:10.4236/OJAS.2021.111002

A. Musa, Y. Mummed, Mohammed Y. Kurtu, M. Temesgen, T. O’Quinn

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引用次数: 5

Abstract

A study was conducted to evaluate the effect of age and breeds (Arsi, Borana, HF-Cross and Harar) on carcass and meat characteristics of bulls finished under similar feeding conditions. The feeding experiment was conducted for 90 days at Beef farm of Haramaya University. In this experiment, 24 bulls were fed with roughage (60%) which contained grass hay and wheat straw and concentrate (40%) which contained wheat bran, noug (gucia abysica) cake, maize grain, limestone, salt and ruminant premix. The bulls were transported to Bishoftu ELFORA export abattoir for slaughter following the procedure of the abattoir. The result of the study revealed that the average slaughter weight, hot carcass weight, cold carcass weight, shrink loss, commercial dressing and true dressing percentage were 179.1 kg, 86.8 kg, 82.7 kg 4.7%, 48.8% and 78.3%, respectively. Total edible and nonedible offal were significantly (P significantly (P Boran, Harar, and HF-crossbred were 78.1%, 77%, 72.8% and 77.2% respectively. Meat yield was predicted from fat thickness and ribeye area with 61% accuracy. Arsi bulls attained the highest (78%) meat yield at early age but decreased by 0.713 rate as age of animals advanced by one digit whereas the meat yield from other breeds showed increment in meat yield percentage with the rate of 1.98, 1.1 and 0.1 for cross, Borana and Harar breed bulls, respectively as age advanced. Yield from fore shank, sirloin, top and bottom sirloin primal cuts were affected by breed. Arsi breed had higher meat bone ration than cross breed. Retailed meat yield was significantly (P 0.05) by age and breed in the current study.

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阿西、博兰、哈拉尔和荷斯坦-弗里斯兰杂交品种公牛在相同精料添加水平下的胴体和肉质特性

研究了年龄和品种（Arsi、Borana、HF Cross和Harar）对相似饲养条件下产公牛胴体和肉质特性的影响。饲养试验在Haramaya大学牛肉农场进行，为期90天。在本实验中，24头公牛被喂以粗饲料（60%）和精饲料（40%），粗饲料中含有草干草和麦秆，精饲料中含有麦麸、牛（gucia abilica）饼、玉米粒、石灰石、盐和反刍动物预混料。公牛被运往Bishoftu ELFORA出口屠宰场，按照屠宰场的程序进行屠宰。研究结果表明，平均屠宰重量为179.1kg，热胴体重量为86.8kg，冷胴体重量为82.7kg，收缩率为48.8%，商品化率为78.3%。食用内脏和非食用内脏总量显著（P显著（P分别为78.1%、77%、72.8%和77.2%）。根据脂肪厚度和肋叶面积预测肉产量的准确率为61%。阿尔西公牛早期的肉产量最高（78%），但随着动物年龄的增长，产量下降了0.713%，而其他品种的肉产量杂交公牛、博拉纳公牛和哈拉尔公牛的产肉率随年龄的增长分别为1.98、1.1和0.1。前腰、里脊肉、上下里脊肉原始切口的产量受品种影响。阿尔西种肉骨比杂交种高。在本研究中，不同年龄和品种的零售肉产量显著（P 0.05）。

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动物科学期刊(英文)

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