As a subject matter expert in animal husbandry and agricultural sciences, I can provide you with an informed answer regarding the average weight of a slaughtered cow. The weight of a cow at the time of slaughter can vary significantly based on several factors, including breed, diet, age, and the specific farming practices utilized.

Firstly, it's important to understand that the weight of a cow at slaughter is not the same as its mature weight. Cows continue to grow until they reach sexual maturity, which can vary by breed but is generally around 2 to 3 years of age. The weight at this point is considered the cow's mature weight. However, cows can be slaughtered at various ages depending on the purpose of the meat, with some being slaughtered as early as 12 to 18 months for veal, while others may be kept until they are 2 to 5 years old for beef production.

The average carcass weight, which is the weight of the cow after it has been slaughtered and processed, is a more standardized measure. According to the data you provided, the average carcass weight has increased over time, from 475 lbs. in 1975 to 621 lbs. in 2005. This increase can be attributed to improvements in breeding, nutrition, and overall farming practices that have allowed for greater growth and heavier carcass weights.

To estimate the live weight of a cow at slaughter, we can use the conversion factor you mentioned, which is 47%. This means that if a cow's carcass weight is 621 lbs., its live weight would be approximately 1,321 lbs. This conversion factor is based on the average dressing percentage, which is the proportion of the live weight that remains after the cow has been slaughtered and processed. The dressing percentage can vary, but 47% is a commonly used estimate.

It's also worth noting that the average weight of a slaughtered cow can differ by region and country due to differences in farming practices, breeds, and consumer preferences. For example, in the United States, the average live weight of a beef cow at slaughter is around 1,200 to 1,400 lbs., while in other countries, it might be slightly higher or lower.

In conclusion, the average weight of a slaughtered cow is a complex figure influenced by a variety of factors. While the data suggests that the average carcass weight has been increasing over time, the live weight at slaughter can still be estimated to be around 1,200 to 1,400 lbs., depending on the specific circumstances and the conversion factor used.

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By dividing the cows' average carcass weight -- 475 lbs. in 1975 and 621 lbs. in 2005 -- by 47%, we approximate the live weights at slaughter, which is 1,010 lbs. and 1,321 lbs., respectively. A 1,321-lb. cow at slaughter is a big cow, but that's not her mature weight.Feb 1, 2009read more >>