Beef carcass classification

Last updated

Countries regulate the marketing and sale of beef by observing criteria of cattle carcasses at the abattoir (slaughterhouse) and classifying the carcasses. This classification, sometimes optional, can suggest a market demand for a particular animal's attributes and therefore the price owed to the producer.

Contents

USDA grading system


In the United States, the United States Department of Agriculture's (USDA's) Agricultural Marketing Service (AMS) operates a voluntary beef grading program that began in 1917. [1] A meat processor pays for a trained AMS meat grader to grade whole carcasses at the abattoir. Such processors are required to comply with Food Safety and Inspection Service (FSIS) grade labeling procedures. The official USDA grade designation can appear as markings on retail containers, individual bags, or on USDA shield stamps, as well as on legible roller brands appearing on the meat itself.

The USDA grading system uses eight different grades to represent various levels of marbling in beef: Prime, Choice, Select, Standard, Commercial, Utility, Cutter, and Canner. The grades are based on two main criteria: the degree of marbling (intramuscular fat) in the beef, and the maturity (estimated age of the animal at slaughter). Prime has the highest marbling content when compared to other grades, and is capable of fetching a premium at restaurants and supermarkets. As of June 2009, about 2.9% of carcasses grade as Prime. [2] Choice is the most common grade sold in retail outlets, and represents roughly half of all graded beef. Select is sold as a cheaper, leaner option in many stores and is the lowest grade typically found for consumer purchase as a steak. Younger cattle (under 42 months of age) tend to be graded as Prime, Choice, Select or Standard, while older cattle are more likely to be graded Commercial, Utility, Cutter, or Canner. These latter grades of beef are used for ground products rather than for consumer sale or food service. [3]

Inspected carcasses tagged by the USDA Beef inspection USDA.jpg
Inspected carcasses tagged by the USDA

Some meat scientists [ who? ] object to the current scheme of USDA grading because it is not based on direct measurement of tenderness, although marbling and maturity are indicators of tenderness. Most other countries' beef grading systems mirror the U.S. model, except for those in the European Union (EU). The EU employs a grading scheme that emphasizes carcass shape and amount of fat covering [4] instead of marbling and aging. The differences in grading yield incompatible value judgments of beef value in the United States and the EU. [5] Most beef offered for sale in supermarkets in the United States is graded U.S. Choice or Select. U.S. Prime beef is sold to hotels and upscale restaurants, and usually marketed as such.

In 1997, the official standards were revised to restrict the Select grade to A maturity carcasses, and to raise the minimum marbling score to qualify for Choice to modest for B maturity cattle. These changes were implemented to improve the uniformity and consistency of the grading system. Yield grades are intended to estimate the pounds of boneless closely trimmed retail cuts from the carcass. Closely trimmed refers to approximately ¼ inch of external fat. Yield grade is determined by considering four carcass characteristics: external fat; kidney, pelvic and heart fat (KPH); ribeye area (REA); and hot carcass weight (HCW). The amount of external fat is measured at the ribbed surface between the 12th and 13th ribs. The ribbing of carcasses is described in the U.S. standards for beef grading. External fat is measured at a distance of ¾ the length of the ribeye from the chine bone end. This initial number can be adjusted up or down depending on any abnormal fat deposits. As the amount of external fat increases, the percent of retail cuts decreases.

Kidney fat is assessed subjectively and is expressed as a percentage of the carcass weight. As the percentage of KPH increases, the percent of retail cuts decreases. The ribeye area is measured at the ribbed surface, it can be estimated subjectively or measured with a device approved by the AMS. As ribeye area increase, percent retail cuts increases. Hot carcass weight is used to determine yield grade. As carcass weight increases, percent retail cuts decrease. The following equation is used to determine yield grade:

There are five grades, 1–5. Yield grade one carcasses are of the highest cutability[ clarification needed ], while yield grade 5 yields the lowest cutability.

Beef sold in U.S. restaurants and supermarkets is usually described by its USDA grade; however, in the early twenty-first century many restaurants and retailers began selling beef on the strength of brand names and the reputation of a specific breed of cattle, such as black Angus. [6] [7]

EUROP classification

The European Union's EUROP grid method of carcass classification was implemented in 1981. European Economic Community Regulations (EEC) No. 1208/81 and No. 2930/81 were enacted to facilitate the application of a community scale for the classification of carcasses of adult bovine animals. This was to ensure the uniform classification of the carcasses of adult bovine animals in the EEC and make the definitions of conformation classes and fat classes more precise. The need arose for a common grading scale when member states of the EEC began operating in the common beef market in 1968 (EEC) No. 805/68 and price reporting to the EC became mandatory.

In the UK, the Meat and Livestock Commission (MLC Services Ltd) is responsible for the classification of over 80% of the cattle slaughtered in Britain. The EUROP grid consists of a five-point scale in which each conformation and fat class is subdivided into low, medium and high sub-classes, resulting in 15 sub-classes. In the UK, the fat classes range from 1–5; classes 4 and 5 each have high and low sub-classes, which results in a seven-point scale for fatness. It is argued by the MLC that this subdivision allows a more precise description of the carcass.

The price a farmer receives for a beast sent for slaughter is calculated by multiplying the carcass weight by the classification price for a particular category of animal (heifer, steer, bull, cow, etc.) This classification is subjectively assigned by the meat grader according to the EUROP system where E is excellent, U is Very Good, R is Good, O is Fair and P is Poor. Likewise for the fat class, where 1 is Low, 2 is Slight, 3 is Average, 4 is High, and 5 is Very High. A typical classification would be R4L where the R refers to a "Good” carcass with an “Average” to “High” covering of fat according to the MLC.

The grader is usually an independent classifier who also monitors carcass dressing specification. Most classifiers are employed by MLC services and they are audited quarterly by the Rural Payments Agency (RPA), a government organisation. More recently video image analysis has been used to classify beef carcasses according to the EUROP scale. There are several machines that can do this, several of which were trialled in Ireland. The Republic of Ireland has used video image analysis for assignment of the EUROP classification grid since 2004.

Two main problems that are often cited in reference to the EUROP grid are its subjective application and its lack of consideration for meat eating quality.[ citation needed ]

Related Research Articles

Belgian Blue Breed of beef cattle

The Belgian Blue is a breed of beef cattle from Belgium. It may also be known as the Race de la Moyenne et Haute Belgique, or dikbil. Alternative names for this breed include Belgian Blue-White; Belgian White and Blue Pied; Belgian White Blue; Blue; and Blue Belgian. The Belgian Blue's extremely lean, hyper-sculpted, ultra-muscular physique is termed "double-muscling". The double-muscling phenotype is a heritable condition resulting in an increased number of muscle fibers (hyperplasia), instead of the (normal) enlargement of individual muscle fibers (hypertrophy).

Beef Meat from cattle

Beef is the culinary name for meat from cattle.

In the United States, FFA competitions are judging contests organized by the U.S. National FFA Organization, in which High School students compete based on their knowledge of a particular subject, usually for their school teams. The contests are organized by FFA advisors and local experts. The competitions determine which team and individuals have the best aptitude for evaluating a particular animal or item as compared to an "official". The official placings and answers are set by an expert in the discipline. Officials are often from agricultural universities or USDA employees.

Kobe beef Type of beef from Japan

Kobe beef is Wagyu beef from the Tajima strain of Japanese Black cattle, raised in Japan's Hyōgo Prefecture according to rules set out by the Kobe Beef Marketing and Distribution Promotion Association. The meat is a delicacy, valued for its flavor, tenderness, and fatty, well-marbled texture. Kobe beef can be prepared as steak, sukiyaki, shabu-shabu, sashimi, and teppanyaki. Kobe beef is generally considered one of the three top brands, along with Matsusaka beef and Ōmi beef or Yonezawa beef.

Rib eye steak Beefsteak from the rib area

The rib eye or ribeye is a boneless rib steak from the rib section.

Skirt steak

Skirt steak is a cut of beef steak from the plate. It is long, flat, and prized for its flavor rather than tenderness. It is not to be confused with hanger steak, a generally similar adjacent cut also from the plate.

Limousin cattle French breed of cattle

The Limousin, French: Limousine, is a French breed of beef cattle from the Limousin and Marche regions of France. It was formerly used mainly as a draught animal, but in modern times is reared for beef. A herd-book was established in France in 1886. With the mechanisation of agriculture in the twentieth century, numbers declined. In the 1960s there were still more than 250 000 head, but the future of the breed was not clear; it was proposed that it be merged with the other blonde draught breeds of south-western France – the Blonde des Pyrénées, the Blonde de Quercy and the Garonnaise – to form the new Blonde d'Aquitaine. Instead, a breeders' association was formed; new importance was given to extensive management, to performance recording and to exports. In the twenty-first century the Limousin is the second-most numerous beef breed in France after the Charolais. It is a world breed, raised in about eighty countries round the world, many of which have breed associations.

Standing rib roast Cut of steak

A standing rib roast, also known as prime rib, is a cut of beef from the primal rib, one of the nine primal cuts of beef. While the entire rib section comprises ribs six through 12, a standing rib roast may contain anywhere from two to seven ribs.

Marbled meat Meat containing various amounts of intramuscular fat

Marbled meat is meat, especially red meat, that contains various amounts of intramuscular fat, giving it an appearance similar to marble.

In animal husbandry, feed conversion ratio (FCR) or feed conversion rate is a ratio or rate measuring of the efficiency with which the bodies of livestock convert animal feed into the desired output. For dairy cows, for example, the output is milk, whereas in animals raised for meat the output is the flesh, that is, the body mass gained by the animal, represented either in the final mass of the animal or the mass of the dressed output. FCR is the mass of the input divided by the output. In some sectors, feed efficiency, which is the output divided by the input, is used. These concepts are also closely related to efficiency of conversion of ingested foods (ECI).

Rib steak Cut of beef sliced from the rib primal of cattle, with rib bone attached

A rib steak is a beefsteak sliced from the rib primal of a beef animal, with rib bone attached. In the United States, the term rib eye steak is used for a rib steak with the bone removed; however, in some areas, and outside the U.S., the terms are often used interchangeably. The "rib eye" or "ribeye" was originally, the central portion of the rib steak, without the bone, resembling an eye. The rib steak can also be prepared as a tomahawk steak which requires the butcher to leave the rib bone intact, french trim the bone and leave it at least five inches long. The tomahawk steak resembles the Native American tomahawk axe from which it gets its name.

Beef cattle Breed of cattle

Beef cattle are cattle raised for meat production. The meat of mature or almost mature cattle is mostly known as beef. In beef production there are three main stages: cow-calf operations, backgrounding, and feedlot operations. The production cycle of the animals start at cow-calf operations; this operation is designed specifically to breed cows for their offspring. From here the calves are backgrounded for a feedlot. Animals grown specifically for the feedlot are known as feeder cattle, the goal of these animals is fattening. Animals not grown for a feedlot are typically female and are commonly known as replacement heifers. While the principal use of beef cattle is meat production, other uses include leather, and beef by-products used in candy, shampoo, cosmetics, insulin

A carcass grade is an assessment of quality for a culled cow or bull. The various grades are defined by the United States Department of Agriculture, and assessments are based primarily on the fatness of the cow to be culled.

Australian Charbray Breed of cattle

The Australian Charbray is an Australian breed of cattle derived from a cross between the French Charolais cattle and American Brahman cattle. The charbray breed was first conceived in the United States of America in the 1930s and later introduced into Australia in 1969. In Australia, Australian charbray breeders are concentrated in the tropical Northern regions of Queensland. As of 1977, the official breeder society of Charbray cattle in Australia and New Zealand is the Charbray Society of Australia Limited, responsible for recording Charbray cattle in herd books, fostering improvement, enhancement and sales of Charbray cattle.

Double-muscled cattle refers to breeds of cattle that carry one of seven known mutations that limits and reduces the activity of the myostatin protein. Normally, myostatin limits the number of muscle fibers present at birth, and interfering with activity of this protein causes animals to be born with higher numbers of muscle fibers, consequently augmenting muscle growth. Additionally, these mutations reduce the superficial and internal fat deposits, causing the meat to be less marbled and lower in fat content. Animals homozygous for myostatin mutation also have improved meat tenderness in some cuts of meat. The enlarged muscles of dam and calf at birth leads to increased difficulty of calving, and in some breeds frequently necessitates birth by cesarean section.

Feeder cattle Young cattle that will soon be sent to fattening, most especially those intended for sale before finishing

Feeder cattle, in some countries or regions called store cattle, are young cattle mature enough either to undergo backgrounding or to be fattened in preparation for slaughter. They may be steers or heifers. The term often implicitly reflects an intent to sell to other owners for fattening (finishing). Backgrounding occurs at backgrounding operations, and fattening occurs at a feedlot. Feeder calves are less than 1 year old; feeder yearlings are between 1 and 2 years old. Both types are often produced in a cow-calf operation. After attaining a desirable weight, feeder cattle become finished cattle that are sold to a packer. Packers slaughter the cattle and sell the meat in carcass boxed form.

Zilpaterol Chemical compound

Zilpaterol is a β2 adrenergic agonist. Under its trade name, Zilmax, it is used to increase the size of cattle and the efficiency of feeding them. Zilmax is produced by Intervet, a subsidiary of Merck & Co., and marketed as a "beef-improvement technology". Zilpaterol is typically fed in the last three to six weeks of cattle's lives, with a brief period before death for withdrawal, which allows the drug to mostly leave the animal's tissues.

Expected progeny differences (EPD) are an evaluation of an animal’s genetic worth as a parent. They are based on animal models which combine all information known about an individual and its relatives to create a genetic profile of the animal’s merits. These profiles are then compared only to other individuals of the same breed.

Steak Flat cut of meat

A steak is a meat generally sliced across the muscle fibers, potentially including a bone. It is normally grilled, though it can also be pan-fried. Steak can also be cooked in sauce, such as in steak and kidney pie, or minced and formed into patties, such as hamburgers.

North American Piedmontese Breed of cattle

North American Piedmontese cattle are a breed of domestic beef cattle originating from an imported herd of select Italian purebred Piedmontese cattle. The foundation line of breeding stock was first imported from Italy into Canada in 1979, and into the United States in the early 1980s. Piedmontese cattle are distinguished by a unique, naturally occurring gene identified as the myostatin allele mutation, or inactive myostatin gene. Myostatin prohibits muscle growth whereas an inactive gene has the opposite effect. Purebred Piedmontese are homozygous,, which means they have two identical alleles present for this unique gene. Research indicates the presence of the myostatin allele mutation produces morphological characteristics unique to the breed, such as double-muscling, beef tenderness, reduced fat content and high yield. According to the North American Piedmontese Association (NAPA), they are the first breed registry to base animal registration requirements on the presence of this specific gene which can be easily verified by DNA testing.

References

  1. United States Standards for Grades of carcass Beef. United States Department of Agriculture. 1997.
  2. Salvage, B. (2009) "Leading the Herd", Meat Processing, June 2009, p. 61
  3. U.S. Meat Animal Research Center; ARS; USDA (September 9, 1994). "Effect of Marbling Degree on Beef Palatability in Bos taurus and Bos indicus Cattle" (PDF). USDA.
  4. Council Regulation (EEC) No 1208/81 of 28 April 1981 determining the Community scale for the classification of carcases of adult bovine animals (OJ L 123, 7 May 1981, p. 3)
  5. Beriain, M. J. (2013). "Contrasting appraisals of quality and value of beef carcasses in Spain and the United States". Revue Méd. Vét. Vét. 164 (7): 337–342.
  6. "Branded Beef Booming". Denver Post. 17 June 2003. Archived from the original on 11 March 2007. Retrieved 17 April 2007.
  7. Chu, Michael. "USDA Beef Quality Grades". Cooking for Engineers. Archived from the original on 19 February 2007. Retrieved 10 August 2007.