National Beef Quality Audit - 2011: Survey of Instrument Grading Assessments of Beef Carcass Characteristics
MetadataShow full item record
The instrument grading assessments for the NBQA-2011 evaluated seasonal trends of beef carcass quality and yield attributes over the course of the year. One week of instrument grading data—HCW, gender, USDA QG, and YG factors—were collected every other month (n = 2,427,074 carcasses) over a 13-month period (November 2010 through November 2011) from four beef processing corporations, encompassing 17 federally inspected beef processing facilities, to create an overview of carcass quality and yield attributes and trends from carcasses representing approximately 8.5% of the U.S. fed steer and heifer population. Mean yield traits were: YG (2.86), HCW (371.3 kg), FT (1.19 cm.), and LM area (88.39 cm^2). The YG distribution was YG 1 (15.7%), YG 2 (41.0%), YG 3 (33.8%), YG 4 (8.5%), and YG 5 (0.9%). Distribution of HCW was <272.2 kg (1.6%), 272.2 kg to 453.6 kg (95.1%), ≥453.6 kg (3.3%). Monthly HCW means were: November 2010 (381.3 kg), January 2011 (375.9 kg), March 2011 (366.2 kg), May 2011 (357.9 kg), July 2011 (372.54 kg), September 2011 (376.1 kg), and November 2011 (373.5 kg). The mean FT for each month was November 2010 (1.30 cm), January 2011 (1.22 cm), March 2011 (1.17 cm), May 2011 (1.12 cm), July 2011 (1.19 cm), September 2011 (1.22 cm), and November 2011 (1.22 cm). The mean marbling score was Small49. USDA QG distribution was Prime (2.7%), Top Choice (22.9%), Commodity Choice (38.6%), and Select (31.5%). Interestingly, from November to May, seasonal decreases (P < 0.001) in HCW and FT were accompanied by increases (P < 0.001) in marbling. These data present the opportunity to further investigate the entire array of factors that determine the value of beef. Datasets utilizing the online collection of electronic data will likely be more commonly used when evaluating the U.S. fed steer and heifer population in future studies. These data indicate the wide array of carcasses produced by the beef cattle industry, and how the frequency of both YG and QG traits change from month-to-month.
Gray, Gatlan 1989- (2012). National Beef Quality Audit - 2011: Survey of Instrument Grading Assessments of Beef Carcass Characteristics. Master's thesis, Texas A&M University. Available electronically from
Showing items related by title, author, creator and subject.
Barcena Mendoza, Roberto (Texas A&M University, 2001)Surface treatments have been used by many government agencies as part of their maintenance and rehabilitation programs to improve surface quality and extend the service life of pavements. Traditional specifications for ...
Racial Differences in the Psychometric Properties of Grades: Are the Grades of non-White Students More Variable? Dovalina, Christen L (2014-03-31)Although college grades are used in the assessment of academic performance and in the determination of the criterion-related validity of tests designed to predict academic performance, there exists virtually no systematic ...
A study of teacher solicitations and student responses during read-alouds with kindergarten, first grade, and second grade students Garcia, Norma Garza (2009-06-02)Read-alouds can be very useful in the classroom to assist students in gaining knowledge and improving reading skills. Educational research documents that there is a link between reading aloud to children and successful ...