Time to Body Condition Score Your Cow Herd

If you have been selling cows in the fall as your normal practice, it may be profitable to feed cull cows by considering the seasonal price patterns.
If you have been selling cows in the fall as your normal practice, it may be profitable to feed cull cows by considering the seasonal price patterns.

Weaning is a good time to evaluate your cows to determine average body condition score of your herd.

What does a body condition score (BCS) tell you?

It is a visual estimate of the energy balance of the cow herd. It is based on a 9 point scale with 1 being emaciated and 9 being obese.

What is the optimal BCS at calving?

The goal is to have cows at a BCS 5 at calving. A BCS 5 refers to a cow with a generally good overall appearance, the fat cover over the ribs feels spongy and palatable fat cover on either side of the tail head. Since heifers are still growing, a BCS 6 is recommended at calving. BCS 6 animals will have a high degree of palpable fat over the ribs and around the tail head and firm pressure is needed to feel the spinous processes. View Basics of Body Condition Scoring (BCS) to learn more on how to body condition score.

If I calve in the spring, why am I concerned about BCS this fall at weaning?

To move a cow 1 full body condition score, requires a cow to gain 75 to 100 pounds of body weight. While she is lactating or during rapid fetal growth in late gestation the more challenging and expensive it is to change a BCS. During late gestation, a fetus will grow by 70%, taking up more room in the body cavity and displacing the rumen. As a result a higher quality feed needs to be fed, to offset the inability of the rumen to hold more feed. At the same time the rumen is being displaced, the cow’s requirements are increasing making it more challenging. While at weaning, the cow’s nutrient requirements are at her lowest (see Table 1). Perfect opportunity to put additional condition on a cow.

Table 1. Nutrient requirements of cow based on production phase.

1,200 lbs.
1,400 lbs.
Phase 1a 59.70% 10.10% 59.10% 9.80%
Phase 2b 55.80% 8.60% 55.20% 8.40%
Phase 3c 50.30% 7.10% 50.10% 7.10%
Phase 4d 53.50% 8.00% 53.50% 8.00%
*on a dry matter basis and based on dry matter intake of 2.0% body weight.
a Phase 1: Calving to conception.
b Phase 2: Early gestation and lactation.
c Phase 3: Weaning and mid-gestation.
d Phase 4: Late gestation.


Why is it important to determine BCS?

A cow’s body condition score prior to calving has the largest impact on re-breeding success. Important research by Selk et al. in 1986 reported 88-98% of the cows in a BCS 5 or greater at calving were cycling at 80 days postpartum, compared to 62% of the cows in BCS 4 or less. Also pregnancy rate was lower amongst BCS 4 or less cows compared to the cows 5 or greater (61% vs. 90%). Based on this research, 38% of the cows that were not cycling by day 80 post calving will not maintain a 365 day calving interval and should be culled from the herd.

What factors influence BCS?

Age, lactation, feed quality and availability, and parasite load are all factors that influences BCS. Young, old and heavy milking cows are typically the thinner cows in the herd. Lack of quality or quantity of feed (i.e. grass) during drought or poorly managed grazing will draw cows down. Regardless if cows are thin due to drought, age, or lactation, early weaning may be the best option to increase BCS prior to late gestation. A 3 year research study conducted at the NDSU Dickinson Research Station, noticed cows that had their calves early weaned gained body condition from August to November. While cows that were in the November weaned group lost BCS during the same time period. During the same research, an average herbage savings of 18.9 lb/cow/day or 36%, resulted when early weaning was used as a management.

To learn more about the importance of body condition scoring, visit iGrow Beef.


Latest News

CAB Insider: Carcass Value Shifts, a Sign of the Times

Jan. fed cattle prices are normally choppy and we’re seeing that pattern in 2021. A primary difference, compared to 2020, is that last week’s average price is $14/cwt. lower, the same discount as the 5-year average.

18 min ago
U.S. President-elect Joe Biden is sworn in as the 46th U.S. President, at the U.S. Capitol in Washington, U.S., January 20, 2021.
Ag Industry Leaders Congratulate Biden, Echo His Call for Unity

Following the inauguration of President Joe Biden, the 46th President of the United States, agriculture industry leaders congratulated Biden and Vice President Kamala Harris.

3 hours ago
Black Ink: Valued Partners

Partnerships aren’t always about a 50/50 business arrangement or who gets what tasks, sometimes they’re simply about having a vested interest in somebody else’s success.

12 min ago
One former Secretary of Agriculture thinks a Biden Administration and USDA will focus more on crafting a farm bill that includes a focus on conservation.
Why a Biden Administration May Not Buy into the Green New Deal

As President Joe Biden took office Wednesday, one former Secretary of Agriculture thinks a Biden Administration and USDA will focus more on helping craft a farm bill that focuses on conservation.

2 hours ago
As wild pigs continue to expand out of control in Canada, the risk of wild pigs moving into the U.S. is very real. This is especially true for North Dakota and Montana, but given how mobile feral swine are, the risks are far beyond that, says Ryan Brook of the University of Saskatchewan. 
Canada Fights Back Against Out-of-Control Wild Pig Population

Wild pig populations in Canada continue to expand rapidly and are completely out of control in Saskatchewan, Manitoba and Alberta. A new tool may help control this invasive species. Here's why you should take note.

1 hour ago
Tyson Settles Anti-trust Case For $221.5 Million

Tyson Foods has agreed to pay a settlement of $221.5 million in the broiler chicken antitrust civil price-fixing lawsuit, according to filings Tuesday in federal court in Chicago.

40 min ago