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

• 作者: Ahmedin Abdurehman Musa Yesihak Yusuf Mummed Mohammed Yusuf Kurtu Melese Temesgen Travis Gene O’Quinn
• 来源期刊: 动物科学期刊(英文)
• 学科: 农学
• 关键词: Carcass pH Meat Characteristics Carcass Yield
• 年，卷（期）: 2021,（1）
• 页码范围: 11-30
• 页数: 20页
• 分类号: S82

摘要

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 (<i></span><i><span style="font-family:Verdana;">gucia</span></i> <i><span style="font-family:Verdana;">abysica</span></i><span style="font-family:Verdana;"></i>) 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 </span><span style="font-family:Verdana;">significantly (P < 0.01) influenced by breed and age. Pelvic fat was</span><span style="font-family:Verdana;"> significantly (P < 0.01) influenced by breeds. Meat yield percentages of Arsi, </span><span style="font-family:Verdana;">Boran, Harar, and HF-crossbred were 78.1%, 77%, 72.8% and 77.2%</span><span style="font-family:Verdana;"> 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 < 0.001) predicted from ri