U.S. Beef Industry and Reproductive Biology Review

Comprehensive question-and-answer practice flashcards covering U.S. beef industry trends, state rankings, production segments, marketing dynamics, and beef cow reproductive biology.

Are any beef cattle native to the United States, and what is the primary purpose of imported cattle?

No beef cattle are native to the U.S. Imported cattle are really only brought in for low-quality use.

What was the total U.S. cattle inventory in 2024, and how often does the cattle cycle repeat?

The 2024 cattle inventory was around $84\text{ million head}$. The U.S. cattle industry goes through a cattle cycle about every $10\text{ years}$.

How do steers compare to heifers in terms of growth, and when do producers begin making money on heifers?

Steers grow better and faster than heifers. Producers typically do not make money on heifers until about $3\text{ years}$.

What is the average age of the highest producing beef cattle farmers in the U.S.?

About $60\text{ years old}$.

What is the total U.S. beef cattle head count, and how long do beef cattle stay in feedlots before being sold?

The U.S. beef cattle count is $27\text{ million head}$, and they stay in feedlots for $5\text{ months}$ before being sold.

How do cow numbers and cow sizes in 2026 compare to 2025?

In 2026 compared to 2025, the number of cows is lower, but the cow size is bigger.

What were the average live weight and dressed weight for cattle in 2024?

Live weight in 2024 was $1,470\text{ lbs}$ and average dressed weight was $900\text{ lbs}$.

What is the relationship between corn prices and cow prices?

Corn prices and cow prices are inversely related.

What is the current decreased slaughter age for U.S. beef cattle?

$15\text{--}17\text{ months}$.

What are the top 5 states for total cattle inventory?

1. Texas ($12,200\text{ thousand head}$)
2. Nebraska ($6,050\text{ thousand head}$)
3. Kansas ($5,950\text{ thousand head}$)
4. California ($5,050\text{ thousand head}$)
5. Oklahoma ($4,600\text{ thousand head}$)

What are the top 5 states specifically for beef cattle?

1. Texas ($4,075\text{ thousand head}$)
2. Oklahoma ($1,950\text{ thousand head}$)
3. Missouri ($1,864\text{ thousand head}$)
4. Nebraska ($1,552\text{ thousand head}$)
5. South Dakota ($1,455\text{ thousand head}$)

In what type of environment do feedlots perform better?

Feedlots perform better in less humid areas.

What are the four primary segments of the U.S. Beef Industry?

1. Seed Stock
2. Commercial cow/calf
3. Yearling Stocker
4. Feedlot

What products are sold by the Seed Stock segment of the beef industry?

Genetics, breeding animals, semen, and embryos.

What are the key production metrics and timeline for a Commercial cow/calf operation?

Cows are expected to produce $1\text{ calf/yr}$, calving in late winter or early spring (February, March, April). Calves are weaned at $5\text{--}10\text{ months}$ at a weight of $>500\text{ lbs}$. Weaned calves are the primary source of income.

What is the average herd size for a cow/calf operation, and how is inventory distributed across operation sizes?

Average herd size is $43.5\text{ head}$. Operations with $>100\text{ head}$ make up $10\text{\%}$ of all operations but account for $56\text{\%}$ of inventory. Operations with $<50\text{ head}$ are typically multi-enterprises used to supplement income.

What diet and grazing pattern are used in the Yearling Stocker segment?

Yearling stockers add cheap weight gains using forage, hay, and silage (no grain). They graze grass during spring, summer, and fall.

What are the diet type, duration, daily gain, and feed conversion ratio in a Feedlot?

Feedlots feed high-energy diets for $90\text{--}300\text{ days}$. Cattle gain $2.5\text{--}4\text{ lbs/day}$ with a $6:1$ feed-to-gain conversion ratio.

What percentage of fed cattle are marketed by feedlots with a capacity of 31,000 head?

Feedlots with $31,000\text{ head}$ compose $5\text{\%}$ of total feedlots and market $80\text{--}90\text{\%}$ of fed cattle.

What five location factors determine where a feedlot is established?

1. Availability of grain
2. Location of packing plants
3. Climate
4. Geographics
5. Low population density

What are the top 5 states for cattle on feed?

1. Texas
2. Nebraska
3. Kansas
4. Iowa
5. Colorado

What proportion of processed beef in the Packing Segment is sold as boxed beef, and what is the preferred carcass weight?

Boxed beef represents $>80\text{\%}$ of processed beef (primal and subprimal cuts, fat and bone removed, vacuum packaged). The preferred carcass weight is $650\text{--}850\text{ lbs}$.

Why is boxed beef more cost-effective than fabricating carcasses at retail stores?

1. Lower labor rates at packing plants vs. retail stores
2. Faster cutting speed
3. Ability to handle larger volume
4. Greater efficiency with byproducts
5. Reduced transportation costs

What is the function of a meat Purveyor in the beef supply chain?

A purveyor is a meat wholesaler that buys beef or some fabrication and sells to the food service industry.

What four factors caused U.S. beef consumption to decrease between 1976 and the 1990s?

1. Lack of consistency in palatability
2. Small supplies of available beef
3. Higher costs relative to other meats
4. Negative consumer perception of red meat regarding human health

What five factors led to a 16% increase in beef demand between 1998 and 2001?

1. Strong economy
2. Popularity of the Atkins diet (high protein)
3. Beef Checkoff program (NCBA)
4. Product development focused on convenience
5. Advertising campaign ('Beef, It's What's for Dinner')

What is the average length and range of the estrous cycle in beef cows?

The average length is $21\text{ days}$, with a normal range of $17\text{--}24\text{ days}$.

What is estrus, how long does it last, and when does ovulation occur?

Estrus is standing heat, which lasts $16\text{ hrs}$. Ovulation occurs at the end of estrus during metestrus (following the 12-hour rule for artificial insemination).

What is the average gestation length for a beef cow, and what factors cause variation?

Average gestation length is $283\text{ days}$. It varies by breed (Brahman is longer than British breeds), is longer when carrying male calves, and is shorter with twin births.

What is the birth weight range for calves, what is ideal, and what term describes a difficult birth?

Birth weight ranges from $45\text{--}120\text{ lbs}$, with $70\text{ lbs}$ being ideal. Difficult birth is called dystocia.

What is parturition, what are its physical signs, and what occurs in Stage 1?

Parturition is the process of giving birth. Physical signs include enlargement of the udder and teats, swollen vulva with discharge, and the cow leaving the herd. Stage 1 involves softening and dilation of the cervix, lasting $2\text{--}6\text{ hrs}$.