Genetic and management factors affecting beef quality in grazing Hereford steers

L.M. Melucci; M. Panarace; P. Feula; E.L. Villarreal; G. Grigioni; F. Carduza; L.A. Soria; C.A. Mezzadra; M.E. Arceo; J. Papaleo Mazzucco; P.M. Corva; M. Irurueta; A. Rogberg-Mufioz; M.C. Miquel

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Genetic and management factors affecting beef quality in grazing Hereford steers

机译：影响赫里福德factors牛放牧的牛肉质量的遗传和管理因素

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Attributes contributing to differences in beef quality of 206 Hereford steers finished on pasture were assessed. Beef quality traits evaluated were: Warner-Bratzler meat tenderness and muscle and fat color at one and seven days after slaughter and trained sensory panel traits (tenderness, juiciness, flavor, and marbling) at seven days. Molecular markers were CAPN1 316 and an SNP in exon 2 on the leptin gene (E2FB). Average daily live weight gain, ultrasound monthly backfat thickness gain and rib-eye area gain were estimated. Molecular markers effects on meat quality traits were analyzed by mixed models. Association of meat quality with post weaning growth traits was analyzed by canonical correlations. Muscle color and marbling were affected by CAPN1 316 and E2FB and Warner-Bratzler meat tenderness by the former. The results confirm that marker assisted selection for tenderness is advisable only when beef aging is a common practice. The most important sources of variation in tenderness and color of meat remained unaccounted for.

机译：评估了在牧场上完成的206赫里福德finished牛皮的牛肉品质差异的属性。评估的牛肉品质特征为：屠宰后1天和7天的Warner-Bratzler肉的嫩度以及肌肉和脂肪的颜色，并在7天时训练有素的感官特质（嫩度，多汁，风味和大理石花纹）。分子标记是瘦素基因（E2FB）上第2外显子的CAPN1 316和SNP。估计平均每日活体重增加，超声每月背脂肪厚度增加和肋眼面积增加。通过混合模型分析了分子标记对肉质性状的影响。通过典范相关性分析了肉品质与断奶后生长特性的关联。肌肉颜色和大理石花纹受CAPN1 316和E2FB的影响，前者受Warner-Bratzler肉嫩度的影响。结果证实，只有当牛肉老化是一种常见的做法时，才建议使用标记物辅助选择嫩度。肉的嫩度和颜色变化的最重要来源仍未得到解释。

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来源
《Meat Science》 |2012年第4期|p.768-774|共7页
作者
L.M. Melucci; M. Panarace; P. Feula; E.L. Villarreal; G. Grigioni; F. Carduza; L.A. Soria; C.A. Mezzadra; M.E. Arceo; J. Papaleo Mazzucco; P.M. Corva; M. Irurueta; A. Rogberg-Mufioz; M.C. Miquel;
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作者单位

Area de Investigacion en Produccion Animal, Estacion Experimental Agropecuaria Bakarce, Instituto National de Tecnologia Agropecuaria, Ruta Nac. 226 km 73.5, (7620) Balcarce, Buenos Aires, Argentina,Departamento de Produccion Animal, Facultad de Cientias Agrarias, Universidad National de Mar del Plata, Ruta Nac. 226 km 73.5, (7620) Balcarce, Buenos Aires, Argentina;

Biotechnology Area, Goyaike S.A.A.C.I Y F., Dra Martha C. Velazco 2150, (1625) Escobar, Buenos Aires, Argentina;

Biotechnology Area, Goyaike S.A.A.C.I Y F., Dra Martha C. Velazco 2150, (1625) Escobar, Buenos Aires, Argentina;

Area de Investigacion en Produccion Animal, Estacion Experimental Agropecuaria Bakarce, Instituto National de Tecnologia Agropecuaria, Ruta Nac. 226 km 73.5, (7620) Balcarce, Buenos Aires, Argentina;

Instituto Tecnologia de Alimentos, Centro de Investigacion de Agroindustria, Instituto National de Tecnologia Agropecuaria, CC 77 (B1708WAB) Moron, Buenos Aires, Argentina;

Instituto Tecnologia de Alimentos, Centro de Investigacion de Agroindustria, Instituto National de Tecnologia Agropecuaria, CC 77 (B1708WAB) Moron, Buenos Aires, Argentina;

Area Genetica, Facultad de Ciencias Veterinarias, Universidad de Buenos Aires, Av. Chorroarin 280, (C1427CWO) Ciudad de Buenos Aires, Argentina;

Area de Investigacion en Produccion Animal, Estacion Experimental Agropecuaria Bakarce, Instituto National de Tecnologia Agropecuaria, Ruta Nac. 226 km 73.5, (7620) Balcarce, Buenos Aires, Argentina;

Area Genetica, Facultad de Ciencias Veterinarias, Universidad de Buenos Aires, Av. Chorroarin 280, (C1427CWO) Ciudad de Buenos Aires, Argentina;

Area de Investigacion en Produccion Animal, Estacion Experimental Agropecuaria Bakarce, Instituto National de Tecnologia Agropecuaria, Ruta Nac. 226 km 73.5, (7620) Balcarce, Buenos Aires, Argentina;

Departamento de Produccion Animal, Facultad de Cientias Agrarias, Universidad National de Mar del Plata, Ruta Nac. 226 km 73.5, (7620) Balcarce, Buenos Aires, Argentina;

Instituto Tecnologia de Alimentos, Centro de Investigacion de Agroindustria, Instituto National de Tecnologia Agropecuaria, CC 77 (B1708WAB) Moron, Buenos Aires, Argentina;

Instituto de Genetica Veterinaria (IGEVET) CCT La Plata, Facultad Cs. Veterinarias, Universidad National de La Plata, Avenida 60 y 118 s. La Plata. Buenos Aires, Argentina;

Area Genetica, Facultad de Ciencias Veterinarias, Universidad de Buenos Aires, Av. Chorroarin 280, (C1427CWO) Ciudad de Buenos Aires, Argentina;

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收录信息美国《科学引文索引》(SCI);
原文格式 PDF
正文语种 eng
中图分类
关键词
crazing; steers; growth; beef quality; molecular markers;

机译：开裂转向增长牛肉质量分子标记;

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Genetic and management factors affecting beef quality in grazing Hereford steers

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