What is carcass composition?
Researchers usually define carcass composition as the relative proportions of dissected skeletal muscle, adipose tissue, and bone measured in growth experiments.
What is carcass measurement?
In all procedures, carcass weight is a critical measurement. If cold carcass weights are used, they should be divided by 0.985 to convert to hot carcass weight. If the carcass is skinned, the weight of skinned carcasses should bedivided by 0.94 to convert to skin on basis.
How is carcass evaluation measurement achieved or done?
The new carcass evaluation techniques include an optical probe which measures fat depth and loin depth which then can be used to estimate percent of lean. Newer systems measure the lean content of the carcass. We also believe these new methods will be used increasingly to aid merit buying of meat animals.
What is PSS and PSE?
Although the term “soft” may look positive, it refers to raw meat. When cooked, there is higher cook loss and the final product is hard, not juicy. The Malignant Hyperthermia (HM) or Porcine Stress Syndrome (PSS) are the terms used to refer to the state pigs are found before slaughter, which will result in PSE.
What is carcass analysis?
The (chemical) analysis of carcasses is a time-consuming exercise and requires very precise approaches to the task. The carcass has to be carefully dissected into the different tissues that are then exactly weighed, after which the chemical analyses have to be performed.
What is carcass yield?
Dressing percentage, or carcass yield as it is sometimes referred to, is the proportion of ending live weight yielded after animals have been stunned (desensitized), exsanguinated, skinned or scalded, and eviscerated. The average dressing percentage of pigs in the US is approximately 74%.
How is carcass quality measured?
The carcass quality grade is determined by visual evaluations for bone maturity, color of the flank muscle, fat streaking in the flank muscle, and conformation of the leg (Fig. 8.5). Therefore lamb values are based on subjective methods rather than objective methods that are used in the pricing of pork carcasses.
What causes PSS?
Porcine stress syndrome, sometimes called malignant hyperthermia or transport myopathy, is a complex, genetically transmitted myopathy usually triggered by stress or excitement. It also can be triggered by several anesthetics, including halothane, and by depolarizing muscle relaxants.
How does PSS become a trait?
To exhibit PSS, an animal must have both recessive alleles (nn). The heterozygote (Nn) does not exhibit PSS, but is a carrier for the disease, and can have offspring that are PSS positive. There is a genetic test available that can determine the exact genotype of a pig (Stalder et al., 1997).
How is carcass quality determined?
What is carcass yield in poultry?
chicken, eviscerated yield for birds packed in watertight bags in ice for 24 hours were 72.04% for the males and 70.08% for the females. The mean edible yield was 73.48% for males and 75.23% for females. Meat-to-bone ratios for the whole carcass were 2.43 for the males and 2.71 for the females.
How is carcass yield calculated?
Example Meat Yield Calculations
- Live weight x typical dressing percent = hot carcass weight 1200 lb x 62% = 744 lb.
- Hot carcass weight x (100 – shrink) = chilled carcass weight 744 x (100% – 3.5%) = 718 lb.
- Chilled carcass weight x carcass cutting yield percent = pounds of take home product 718 lb x 67% = 481 lb.
Retail distribution systems define carcass composition as the yield of closely trimmed retail cuts vs amount of fat, connective tissue, and bone removed to create the retail cuts. Researchers usually define carcass composition as the relative proportions of dissected skeletal muscle, adipose tissue, and bone measured in growth experiments.
What is the medical definition of carcass?
Medical Definition of carcass. : a dead body : corpse especially : the dressed body of a meat animal. Keep scrolling for more.
How do you determine the composition of an animal carcass?
Dissection and chemical analysis have traditionally been used as the standard methods for determining carcass composition. However, these procedures are expensive, laborious and destructive (i.e., an animal or carcass can be used only once).
What are the factors influencing carcass composition?
Factors influencing carcass composition Genetic factors Physiological Age Influence of Sex Nutrition Hormones Environment Pre-slaughter handling Abnormal Growth Factors 5. 1.