Victor Forge
Whole muscle turkey is a term that refers to the physical characteristics of turkey meat. The muscle structure of a turkey is an important consideration when discussing domestication and breeding. Studies have been conducted to compare the muscle composition of wild turkeys and domestic turkeys, with a focus on the lateral gastrocnemius (LG) muscle, which is crucial for walking. These studies have revealed that domestic turkeys have been selectively bred to achieve a larger body mass, with muscles approximately twice the size of those found in their wild counterparts.
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What You'll Learn
- Domesticated turkeys have larger muscles than wild turkeys
- The LG muscle in domesticated turkeys produces less force per unit body mass
- The muscle fibres in domesticated turkeys are smaller
- The collagen concentration in domesticated turkey muscles is lower
- The lateral gastrocnemius muscle is important for walking
Domesticated turkeys have larger muscles than wild turkeys
Today, Minnesota is the leading producer of domesticated turkeys, with around 40 million birds per year, followed by North Carolina with 29 million. Domesticated turkeys are larger than their wild cousins, with muscles twice the size. This is due to selective breeding for increased muscle mass. While the muscle fibres of domesticated turkeys are smaller, they have a greater number of them, and their collagen content is lower, contributing to meat tenderness.
Wild turkeys, on the other hand, are agile and fast fliers, with acute eyesight, allowing them to survive in the woods. They can reach speeds of up to 55 mph in flight. They have deep, rich brown and black feathers, while domesticated turkeys are typically white due to intentional breeding. Wild turkeys are native to North America and are one of two extant species of turkey, serving as the ancestor to the domestic turkey.
The differences between domesticated and wild turkeys are not just physical, but also genetic. Domesticated turkeys have lost their survival instincts and are more susceptible to diseases. They are often harvested before they reach maturity, typically between 12 and 16 weeks of age, weighing between 20 and 35 pounds.
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The LG muscle in domesticated turkeys produces less force per unit body mass
Whole muscle turkey is a term used to describe turkey products that are free from bones, gristle, and blood vessels. The product is made from the whole muscle of the turkey, hence the name.
Despite these changes, the LG muscle in domesticated turkeys can produce the same amount of force per cross-sectional area as a wild turkey. However, because domesticated turkeys have a much higher body mass, they produce less force per unit body mass overall. This is due to scaling, as the increase in body mass contributes more to the hind limb functional differences observed in domesticated turkeys.
The lateral gastrocnemius (LG) muscle is an ankle extensor important for walking. Studies have been conducted to compare the LG muscle in wild and domesticated turkeys. Measurements of the LG muscle fiber cross-sectional area were taken from SEM images, with adult wild turkeys having a larger mean fiber area than adult domesticated turkeys.
The collagen concentration in the muscle was also found to be significantly lower in domesticated turkeys, which may be a result of selection for tenderness. These structural changes in the LG muscle may have functional implications for the locomotion and movement of domesticated turkeys.
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The muscle fibres in domesticated turkeys are smaller
Whole muscle turkey is a lean, high-protein alternative to beef. Turkey breast steaks, for example, are hand-trimmed, bone, gristle, and blood vessel-free.
Turkey muscles are made of many elongated cells called muscle fibres. Each fibre is capable of contracting, causing the muscle to shorten. The muscles are attached to bones via a piece of connective tissue called tendons. When all the fibres of a muscle contract, the muscle is capable of remarkable force, causing movement in the part of the body to which the muscle inserts.
The muscle fibres in domesticated turkeys are slightly smaller in CSA (3802 ± 2223 μm2) than those of the wild turkey (4014 ± 1831 μm2). The number of muscle fibres remains roughly constant in the LG muscle during growth, at approximately 500,000 fibres. The domestic turkey muscle had a greater number of smaller muscle fibres than the wild turkey. This is likely due to the increased number of smaller fibres in domesticated birds compared to wild birds, which contain more oxidative fibres.
The amount of collagen in the domestic turkey muscle was also lower than in wild turkeys, which likely contributes to meat tenderness. There were visible differences in the collagen distribution and amount between the two groups, with the endomysium of the young domestic turkeys being much wispier than either adult strain.
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The collagen concentration in domesticated turkey muscles is lower
Turkey meat is a popular choice for consumers seeking a lean, high-protein alternative to beef. The muscle structure of domesticated turkeys has been a subject of interest for researchers, particularly when compared to that of their wild counterparts.
The lateral gastrocnemius (LG) muscle, for instance, is crucial for normal locomotion in turkeys, functioning as an ankle extensor. Studies have revealed that while the LG muscle in domestic turkeys can generate the same force per cross-sectional area as a wild turkey's, they produce less force per unit body mass due to scaling. This scaling effect is attributed to the larger body mass of domestic turkeys, which can be up to three times that of wild turkeys.
The question then arises: what accounts for the increased muscle mass in domestic turkeys? Research suggests that it is a result of an increased number of smaller muscle fibers. Specifically, the muscle fibers in domestic turkeys were found to have a smaller cross-sectional area (CSA) than those in wild turkeys. This indicates that the larger muscle size in domestic turkeys is due to a higher count of these smaller fibers.
However, an intriguing aspect of these muscle differences is the variation in collagen concentration. Collagen, a crucial component of connective tissues, was found to be significantly lower in the muscles of domestic turkeys compared to wild turkeys. This finding was supported by scanning electron microscopy observations, which revealed visible differences in endomysium texture.
The lower collagen concentration in domestic turkey muscles is likely a consequence of selective breeding for increased muscle mass. This alteration in collagenous structure may also contribute to the meat's tenderness, a desirable trait for consumers. Thus, the reduced collagen concentration is an important factor in understanding the structural and functional changes that have occurred in the muscles of domesticated turkeys.
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The lateral gastrocnemius muscle is important for walking
Whole muscle turkey is a term that refers to turkey meat that includes all the muscles of the bird, as opposed to processed turkey meat that contains only specific muscles.
Now, on to the importance of the lateral gastrocnemius muscle for walking.
The gastrocnemius muscle is a two-headed muscle located in the back part of the lower leg in humans. The lateral head is higher and projects from the outer aspect of the lateral condyle of the femur, while the medial head is lower and projects from the medial condyle of the femur. The gastrocnemius is part of the calf muscle and is responsible for plantar flexion of the foot at the ankle joint and flexion of the leg at the knee joint.
In a study comparing wild and domestic turkeys, it was found that the lateral gastrocnemius muscle is important for walking in turkeys as well. Domestic turkeys have been bred to have larger muscles, and while their lateral gastrocnemius muscles could produce the same amount of force per given area as wild turkeys, they could only produce half as much force per unit body mass. This suggests that the scaling of the muscle contributes to functional differences in walking observed in domestic turkeys.
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Frequently asked questions
Whole muscle turkey is a product made from the breast muscle of a turkey and is prepared in various ways for professional and consumer use.
Turkey is a lean, high-protein alternative to other meats like beef. It is also usually free from bones, gristle, and blood vessels.
Examples include premium turkey breast steaks and lean turkey mince.
Whole muscle turkey has impeccable nutritional profiles and tastes incredible without breaking the bank.
