张掖肉牛屠宰性能和肉质评定报告

Zhangye Beef Cattle Slaughter Performance and Meat Quality Evaluation Report

中文关键词: 张掖肉牛  屠宰性能  肉质评定

英文关键词: Zhangye beef cattle  slaughter performance  meat quality evaluation

中文摘要:

      [目的]通过屠宰分析和测定评价，明确张掖肉牛的屠宰性能和肉质风味，作为依据制定下一阶段的选育目标和选配方案。[方法]选择核心育种场育肥牛，检疫后定点集中屠宰测定分析；分割排酸取样，真空包装不同部位肉样带北京试验室根据相应的测定标准进行肉质评定。[结果]张掖肉牛公牛育肥至22.4月龄屠宰，活重、胴体重分别达635.4 kg，371.4 kg，产净肉303.66 kg；屠宰率、净肉率和胴体产肉率分别达58.48%，47.8%和81.76%；胴体脂肪覆盖度良好，肉色和脂肪颜色达到日本胴体分级标准中较高级别。牛肉肉质细嫩，高蛋白，低脂肪，但大理石花纹欠缺。熟肉制品风味独特，多汁性良好，与北京市场销售西门塔牛肉相比，具有较高的适口性和营养价值。[结论]张掖肉牛品种改良、培育成效显著，生产水平达到肉用牛标准，肉质风味能够满足目前的市场需求；若开拓高端牛肉市场，需着力大理石花纹的培育。

英文摘要:

      [Purpose] Through the analysis and evaluation of slaughter, the slaughter performance and meat flavor of Zhangye beef cattle were clarified, and the breeding objective and selection scheme of the next stage were formulated as the basis. [Methods]Selection of fattening cattle in the core breeding farm, determination and analysis of slaughter in fixed point after quarantine; the meat quality was assessed by cutting acid sample and vacuum-packed meat sample. [Results] The live weight and carcass weight were 635.4 kg and 371.4 kg, and the net meat yield was 303.66 kg. The slaughter rate, net meat rate and carcass yield rate were 58.48%, 47.8% and 81.76%. The carcass body fat is well covered, and the meat and fat color meet the higher level of Japanese carcass grading standards. The meat is tender, high in protein and low in fat, but lacking in marbling. The cooked meat products have unique flavor and good juiciness. Compared with the Simmental beef sold in Beijing market, they have higher palatability and nutritional value. [conclusion] The improvement and cultivation of Zhangye beef breeds have achieved remarkable results, the production level reaches the standard of beef cattle, and the meat flavor can meet the current market demand. To develop the high-end beef market, we need to focus on the cultivation of marbled patterns.