Milly Gaines
Cows are usually farmed for milk, meat, and leather, and their lifespans are often cut drastically short as a result. Cows can naturally live as long as 15-20 years, with the oldest recorded age being 48 years and nine months. Cows are often fed corn, which is a cheap and nutritious source of energy, helping them grow strong and healthy. However, cows are adapted to pasture diets, and corn-based diets can lead to serious illnesses, such as bloat and acidosis. This raises ethical questions about the use of corn in cows' diets.
| Characteristics | Values |
|---|---|
| Average lifespan of cows | 15-20 years |
| Oldest recorded age | 48 years and 9 months |
| Average food consumption | 24-26 pounds of food per day |
| Corn consumption | 2-2.5 pounds of dry food for every 100 pounds of body weight |
| Corn as a source of energy | High-energy content |
| Corn as a source of vitamins and minerals | Yes |
| Corn as a source of protein | Low protein content |
| Corn as a source of calcium | Low calcium content |
| Corn as a source of phosphorus | High phosphorus content |
| Corn as a forage supplement | Should be less than 0.4% of body weight |
| Corn as a feed grain | Yes |
| Corn as a cause of digestive problems | Yes |
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What You'll Learn
Cows' natural diet vs. factory farm feed
Cows are ruminants, meaning they are adapted to pasture diets of fibrous plants and grass, called roughage. Their complex four-part digestive system allows them to slowly digest relatively large amounts of fibrous grasses that contain cellulose and hemicellulose. Their natural diet consists of a mixture of perennial grasses, legumes, alfalfa, clover, and hay. They also eat leaves, twigs, and bark from bushes or trees, though they are more "grazer" than "browser".
However, the vast majority of cows in the United States live on factory farms, where they are fed grain-heavy diets of corn and soy, which are highly fermentable and carbohydrate-rich. In 2019, beef cows' feed consisted of 57% corn and 21% dried distillers grains (DDGs), while dairy cows consumed 39% corn and 16% DDGs. Corn is cheap and allows meat to be affordable for the average American household, increasing demand for meat and the amount of beef produced in feedlots.
Unfortunately, the grain-rich diets fed to cows on factory farms have severe negative effects on their well-being. The addition of corn to a steer's diet changes the chemistry of its digestive system and leads to serious illnesses, including bloat, acidosis, laminitis, liver abscesses, ulcers, dehydration, diarrhoea, infections of the lung, heart, and/or kidneys, and neurological issues. Beef cows raised on grain diets are less likely to chew their cud, which can create displaced abomasums and twisted stomachs.
Cows on factory farms generally do not live out their natural lifespans as they are farmed for milk, meat, and leather. Dairy cows usually live to be six years of age at most, when they can no longer produce milk, and are sold for slaughter. Beef cows are generally killed at 2-4 years old. However, cows living at sanctuaries can reach much older ages, with the oldest recorded age for a cow being 48 years and nine months.
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How corn affects cows' digestive systems
Corn is a common part of cattle feed, especially in the United States, due to its affordability and high energy content. Corn is also a nutritious source of energy for cattle, providing them with valuable nutrients and helping them grow strong. However, the addition of corn to a steer's diet changes the chemistry of its digestive system, leading to serious illnesses, including bloat and acidosis.
Cattle have complex digestive systems, consisting of the rumen, reticulum, omasum, and abomasum, which allow them to digest cellulose and hemicellulose found in grass blades. The rumen enables cattle to take advantage of fibrous grasses that contain cellulose and hemicelluloses. The omasum is believed to assist in the reabsorption of water from the digesta, and the abomasum, or "true stomach," secretes digestive enzymes that aid in the absorption of nutrients by the small intestine.
Cattle evolved as grazers and are adapted to pasture diets, so their natural diet consists of a mixture of perennial grasses. The addition of grain, primarily corn, into their diet can cause digestive problems. Corn is made up of a greater percentage of starch, which is found in the endosperm. During ruminant digestion, starch is fermented into volatile fatty acids (VFA) in the rumen and, to a lesser degree, in the large intestine. Starch is digested into glucose in the small intestine to provide the animal with energy.
To access and break down the starch from inside the corn kernel, rumen microbes (bacteria, protozoa, and fungi) and other digestive enzymes must penetrate the fibrous pericarp and protein matrix that protects the starch. For ruminal digestion of starch from an intact corn kernel to occur, the pericarp of the corn kernel must be damaged by either chewing or some type of grain processing, such as grinding, rolling, or steam-flaking. The forage-to-grain ratio in cattle diets can greatly affect the digestibility of various components, and certain rumen microbial communities are better suited to digest either forage- or grain-based diets.
While corn is a common part of cattle feed, it is important to consider the potential impact on the steer's digestive system and overall well-being.
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The average lifespan of cows
Cows are usually farmed for milk, meat, and leather, and their lifespans are often cut drastically short as a result. The oldest recorded age for a cow is 48 years and nine months, but this is far from the norm. Cows can naturally live as long as 15 to 20 years, sometimes even longer. Dairy cows, for instance, usually live to be six years old at most, as they are sold for slaughter once they can no longer produce milk. Similarly, bulls raised for beef are typically castrated and slaughtered at 2 to 4 years old.
Cows' diets on industrial farms often include a significant amount of animal feed made from corn and soy, and they are not allowed to graze freely. Corn is a cheap and nutritious source of energy for cattle, providing valuable nutrients and helping them grow strong. It is also a good source of protein and helps produce tasty, tender meat. Corn is included in the diet of cattle to supplement their natural diet of grasses, legumes, alfalfa, clover, and hay.
However, cows have evolved as grazers, and their natural diet consists of fibrous grasses. Their digestive systems are complex, allowing them to digest cellulose and hemicellulose found in grass blades. The addition of corn to their diet changes the chemistry of their digestive system and can lead to serious illnesses, such as bloat and acidosis. Therefore, while corn has its benefits, it is important to consider the potential negative impact on cows' digestive health and overall lifespan.
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Corn as a source of energy for cows
Corn is a common part of cattle diets, especially in the United States, where corn is mass-overproduced. Corn is a good source of energy for cows, providing valuable nutrients and helping them grow strong. Corn is also a low-fat source of carbohydrates, which gives cattle the energy to stay healthy and productive.
Cattle have a complex digestive system, consisting of the rumen, reticulum, omasum, and abomasums, which allows them to digest cellulose and hemicellulose found in grass blades. They are adapted to pasture diets, but they can also digest corn. Corn is lower in protein and slightly higher in starch than other feed grains, which can negatively affect forage utilization. However, it is a good source of rumen-degradable protein, which is important for growth and protein synthesis. Corn can be used in many different types of diets, and it can serve as a supplement in forage-based diets for beef cows. When used as a forage supplement, ensuring adequate rumen-degradable protein is available is important to prevent any depressions in forage digestibility.
Corn is a beneficial food for beef cattle, helping steers and heifers grow healthy and strong. It also helps produce tasty, tender meat that consumers enjoy. Corn provides a well-balanced diet for cattle, which helps keep them healthy throughout their lives. Corn's high energy content is an efficient way to prepare beef cattle for market, and it helps keep the cost of raising cattle and buying beef affordable.
Cattle can digest whole corn kernels, and they can also consume smashed-up corn kernels. This is why many farmers let their cattle out into the corn fields after harvest. Corn is also used to make sileage, a common food for cattle made by harvesting the corn plant while it is still green and allowing it to ferment. Distillers grains, a co-product of the ethanol-making process, are another form of corn that is a good source of protein for cattle and other livestock.
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The cost of raising cows on corn
One of the main costs of raising cows on corn is the financial expense. Feed costs have been identified as the largest single cost of livestock production, accounting for 50 to 70 percent of the total cost. The price of corn feed can vary, and producers must also consider the cost of investing in equipment for harvesting and feeding. For example, using standing corn as a green chop requires more equipment, increasing the cost. Additionally, the weight of the cow is a factor, as larger cows will consume more feed, resulting in higher costs.
The availability of land is another factor influencing the cost of raising cows on corn. Grazing land is necessary for cows to obtain their natural diet of grass, reducing the reliance on corn feed. If farmers have access to grassland, they can lower their costs by allowing cows to graze. Typically, 2 to 5 acres of grassland are required per cow. However, in cases where cows are kept indoors or in confined spaces, the cost of corn feed becomes more significant.
In addition to financial costs, there are ethical considerations regarding the health and welfare of cows raised on corn. Cattle have complex digestive systems adapted to pasture diets, and consuming corn can lead to serious illnesses such as bloat and acidosis. The cramped and unsanitary conditions in feedlots, combined with the digestive problems caused by a grain-rich diet, negatively impact the well-being of cows. This raises ethical concerns about the practice of feeding cattle corn-based diets.
The weight and breed of cows also play a role in the cost of raising them on corn. Different breeds have varying feed requirements and efficiencies, impacting the overall cost of production. Additionally, the purpose of the cows, whether for dairy or beef, influences their diet and associated costs. Dairy cows, for example, may require more nutrient-rich feed, while beef cows may be fed corn to promote weight gain.
In conclusion, the cost of raising cows on corn involves financial considerations, such as feed prices and land availability, as well as ethical concerns related to the health and natural diet of cows. While corn provides a well-balanced diet for beef cattle, it also contributes to digestive issues and illnesses. Therefore, a comprehensive understanding of the costs involves not only economic factors but also the welfare of the animals.
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Frequently asked questions
Cows can naturally live as long as 15-20 years, with the oldest recorded age being 48 years and nine months. However, cows that are raised for beef or dairy typically do not live long enough to die of old age or natural causes.
Corn is a nutritious source of energy for cows, providing them with valuable nutrients and helping them grow strong. Corn is also low in fat and a good source of protein and carbohydrates. However, corn is relatively low in protein and high in starch, which can negatively affect forage utilization.
Cows are grazing animals and their natural diet consists mainly of grasses, legumes, alfalfa, clover, and hay. They also enjoy fruits as snacks.
Corn is a cheap and efficient way to feed cattle. It helps keep the cost of raising cattle and buying beef affordable. Corn is also used to provide cattle with a nutritional boost, especially during winter or droughts when grass is unavailable.
Corn is not a natural part of a cow's diet and can cause serious digestive problems, including bloat and acidosis. It can also lead to cramped and unsanitary living conditions for the cows.
