Beef marbling is the most important indicator of beef quality grading via measuring the abundance of intramuscular fat (IMF) in rib-eye muscle. A beef marbling grading method was developed herein based on image processing and support vector machine (SVM). 123 images of beef rib eye steak were acquired for manual evaluation and image processing. After the marbling, scores were labelled to each i...

Research has demonstrated that triiodothyronine and thyroxin have been associated with marbling deposition in Wagyu beef. Thyroglobulin 5 (TG5) polymorphism has been associated with an improvement in overall fattening and could be used as a “gene marker” for marbling. The commercially available GeneSTAR Marbling test measures the specific polymorphism in DNA as either having zero, one, or two c...

We describe a method of determining meat quality using the concepts of ``marbling score'' and texture analysis. The marbling score is a measure of the distribution density of fat in the rib-eye region. In this system, we consider the marbling of meat as a texture pattern. We use a gray level cooccurrence matrix as a texture feature and make standard texture±feature vectors for each grade using ...

Carcass and Warner-Bratzler shear force (WBSF) data from strip loin steaks were obtained from 7,179 progeny of Angus, Brahman, Brangus, Charolais, Gelbvieh, Hereford, Limousin, Maine-Anjou, Red Angus, Salers, Shorthorn, Simbrah, Simmental, and South Devon sires. Trained sensory panel (TSP) evaluations were obtained on 2,320 steaks sampled from contemporary groups of progeny from one to five sir...

In order to reduce the influence of uneven illumination and reflect light for beef accurate segmentation, a beef marbling segmentation method based on homomorphic filtering was introduced. Aiming at the beef rib-eye region images in the frequency domain, homomorphic filter was used for enhancing gray, R, G and B 4 chroma images. Then the impact of high frequency /low frequency gain factors on t...

INTRODUCTION: The goal of this paper is to review the genetic aspects of marbling in beef carcasses and to serve as a reference source. It is not meant to be an exhaustive review of the literature in regard to all relationships involving marbling with other production and carcass traits. However, it is meant to review several of the major studies around the world that could have direct genetic ...

The fat mass and obesity associated (FTO) gene plays an important role in the regulation of energy homeostasis, fat deposition and obesity. For this reason, the FTO gene is a physiological and functional candidate gene for carcass and meat quality traits in beef cattle. The objectives of this study were to identify SNPs in the exonic regions of FTO gene and to evaluate the association of these ...

Neural network processing of texture statistics (which parameterized longissimus muscle echograms of live cattle) resulted in marbling estimates that differed from corresponding USDA carcass marbling scores by an average of .42 marbling score units. This was more accurate (P < .001) than using the same features in a multiple regression model. Images were used from 53 cattle in the training set ...

Variation at the retinoic acid receptor-related orphan receptor C (RORC) gene was previously associated with marbling score in a large sample of Australian taurine feedlot cattle of Angus and Shorthorn breeds. The T allele at the SNP RORC:g.3290T > G increased marbling score in Angus and Shorthorn cattle. We genotyped this SNP in an independent sample of 2,741 Australian cattle of Angus, Brahma...

Angus bulls (n = 20) from three pure-bred herds in Georgia were acquired to determine the impact of selecting sires based on phenotypic yearling ultrasound intramuscular fat percentage (UIMF) or UIMF EPD on marbling score of steer progeny. Each year in each herd, pairs of bulls were selected to create large differences based on their age adjusted phenotypic yearling UIMF measurements. The avera...