This document discusses the effects of body condition on dairy cow performance. It summarizes that body condition scoring is a useful tool for herd nutrition and health management. Body condition influences milk production, dry matter intake, reproduction, and health of cows. Cows should maintain an appropriate body condition throughout lactation to maximize performance and minimize health risks like ketosis or lameness. The ideal body condition score varies at different stages of lactation.
Instructions with detailed photographs to learn a step by step process for scoring body condition in dairy cows.
Animations in the file can be viewed by downloading this presentation.
Explanation of the body condition scale for dairy cattle, including numerous pictures of cows at different scores.
Animations in the presentation can be viewed by downloading the file.
Instructions with detailed photographs to learn a step by step process for scoring body condition in dairy cows.
Animations in the file can be viewed by downloading this presentation.
Explanation of the body condition scale for dairy cattle, including numerous pictures of cows at different scores.
Animations in the presentation can be viewed by downloading the file.
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Ray Nebel of Select Sires, Inc. presented this information for DAIReXNET on March 17, 2014. A recording of the full presentation can be found at http://www.extension.org/pages/15830/archived-dairy-cattle-webinars#.Uyigy86nbZU,
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Nutrition affects lameness and hoof health in a variety of ways. Learn about both direct and indirect impacts of nutrition, such as acidosis and metabolic diseases, as well as how interactions between nutrition and environment can play a part.
You can find the full presentation on YouTube at https://www.youtube.com/watch?v=BlM6pfj_WZ8
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Dr. Jessica McArt presented this material for a DAIReXNET webinar on January 19, 2016. To see more about this and other webinars, please visit our archived webinar page at http://bit.ly/1wb83YV
This presentation on mineral and vitamin nutrition (in sheep and goats) was part of a six part webinar series. It was presented by Dr. Dan Morrical from Iowa State University.
Jan Kleinschmidt talks about the importance of nutrition from birth to weaning. She covers topics like preparing the dam, colostrum management, milk replacers, calf starter, feeding hay, and weaning.
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2. Using body condition scoring to fine tune
herd nutrition and health management
has become a widely accepted practice.
This presentation will examine the
influence of body condition on
milk production,
dry matter intake,
reproduction, and
health of cows in your herd
3. Nutrient and Milk Yield
Relationships in the Lactation and
Gestation Cycle
Periods
1 2 3 4 5
Body Stores Dry Matter Intake Body Stores Dry Period
Used for Regained for Rumen
Milk Production Next Lactation Rehab
Mil
kP
rod
uct
ion
Body Weight
Freshening
0 1 2 3 4 5 6 7 8 9 10 11 12
Month
4. BCS and Milk Production
BCS at calving
< 2.75 reduced milk yield
> 3.25 reduced milk yield
Penn State & Cornell research shows cows with a
BCS >3.25 at calving produce 5 pounds less milk
each day than cows with lower BCS during the first 30
days of lactation
BCS change after calving
Decrease of 1 BCS unit increase of 930 lb milk in
305-d lactation
Body reserves essential to support milk production
Waltner et al., 1993
Pedron et al., 1993
5. BCS and Increased Health
Risk
Excess Body Condition Thin Body Condition
Fat Cow Syndrome Lameness
Ketosis
Displaced Abomasum
Milk Fever
Metritis
Mastitis Metabolic problems can set
Lameness the stage for consequences
of other nutritional-stress
Limited Dry Matter complications, including
Intake infections such as mastitis.
6. BCS and Reproduction
Cows > 3.75 BCS at dry off were 2.8 times more
likely than cows with average BCS to experience
the following reproductive problems in their next
lactation
Dystocia
Retained placenta
Uterine infection
Cystic ovaries
Abortion
Gearhart et al., 1990
7. Relationship between BCS Loss in
First 5 Weeks after Calving and
Reproduction
Body Condition Loss
Item < 0.5 0.5 to 1.0 > 1.0
# Cows 17 64 12
Days to first ovulation 27a 31a 42 b
Days to first heat 48ab 41a 62b
Days to first service 68a 67a 79 b
First service conception
65a 53a 17 b
rate, %
Services per conception 1.8 2.3 2.3
Pregnancy rate, % 94 95 100
Means in a row with different superscripts differ P < 0.05
Butler and Smith, 1989
8. In Summary. . .
BCS changes can cause problems when
they are
Too Little
Too Much
Too Rapidly Changed
9. Managing Body Condition
Loss
Avoid over conditioning
If cows are fat at dry off
Do Not allow BCS loss during dry period
Body condition score dry cows to monitor
changes
Maximize dry matter intake of close up
and fresh cows to limit negative energy
balance
10. BCS Loss in High
Producers
High-producing cows can lose between
100 to 150 pounds during the first 60 to 80
days (the equivalent of 1 BCS unit)
Rate of 1 to 2 pounds per day
But weight loss of 3 to 4 pounds per day
May increase the possibility of metabolic
disorders such as ketosis
May discourage implantation of the fetus,
resulting in cows that are "apparently not
conceiving"
11. More on High Producers
Negative energy balance is common for
high-producing cows in early lactation
Mobilized body fat is used to produce milk
1 pound of mobilized fat = 7 pounds of milk
Our goal is to minimize weight loss by
encouraging intake of
High quality, highly palatable forage dry
matter at 1.8 to 2.0% of body weight daily
Sufficient grain, the quantity being gradually
increased over the first few weeks of lactation
12. Managing Body Condition
Gain
Add body condition in late lactation
Efficient storage of energy
Monitor BCS of lactating cows to identify
thin and fat cows early, in time to make
adjustments before drying off
Avoid changes in BCS during dry period
Very thin cows may benefit from extra feed in
the early dry period
13. More on Body Condition
Gain
Cows should start replenishing fat
reserves after reaching peak milk
A few cows, 5 to 10%, may never put on
much flesh
A similar proportion may be "easy
keepers" and tend to be obese most of the
time
14. BCS Changes Over Lactation
Efficient, high producing cows do not
experience large changes in body
condition
Inefficient, low producing cows increase in
BCS over a lactation
Most cows are between these extremes
BCS decreases to about 100 days
Then increases until dry-off
15. Recommended BCS by
Stage of Lactation
BCS
Stage of
Lactation DIM Goal Min Max
Calving 3.50 3.25 3.75
Early Lactation 1 to 30 3.00 2.75 3.25
Peak Milk 31 to 100 2.75 2.50 3.00
Mid Lactation 101 to 200 3.00 2.75 3.25
Late Lactation 201 to 300 3.25 3.00 3.75
Dry Off > 300 3.50 3.25 3.75
16. BCS at Calving
Recommended Score:
3.25 to 3.75
Nutritional Objective:
Cows calve with adequate,
but not excessive, body-fat
reserves
17. Red Flags – Calving
BCS < 3.25 BCS > 3.75
Too little energy Too much energy
provided in late lactation provided in late lactation
or dry period or dry period
Risk low milk production Separate dry cows from
Especially if ration is not milking herd
balanced or not palatable Feed low-energy ration
balanced for protein,
minerals, and vitamins
Niacin may help
Reduce ketosis
Increase fat mobilization
Increase appetite
18. BCS in Early
Lactation
Recommended Score:
2.75 to 3.25
Nutritional Objectives:
Maximize intake of a high-
energy ration
Minimize body condition
loss and offset negative
energy balance
Ration must contain enough
protein to support high milk
production
19. Red Flags – Early
Lactation
BCS < 2.75 and low BCS > 3.25
milk production Too little protein
Too little energy provided in ration to
provided in ration support milk production
Check intake of water,
High producers may minerals, and vitamins
drop below 2.75, but
condition must be
regained to prevent
reproductive problems
20. BCS at Peak
Milk Yield
Recommended Score:
2.5 to 3.25
Nutritional Objectives:
Maximize intake of a high-
energy ration
Minimize body condition
loss and offset negative
energy balance
Ration must contain
enough protein to support
high milk production
21. Red Flags – Peak Milk
BCS < 2.5 and low milk BCS > 3.25
production Too little protein provided
Too little energy provided in ration
in ration Check intake of water,
minerals, and vitamins
22. BCS in Mid
Lactation
Recommended Score:
2.75 to 3.25
Nutritional Objectives:
Maintain body condition
Begin to gain condition
for maximum milk
production
Avoid excessive body
weight gain
23. Red Flags – Mid Lactation
BCS < 2.75 BCS > 3.25
Too little energy Reduce energy intake to
provided in ration avoid over conditioning
Problem probably began
in early lactation
24. BCS in Late
Lactation
Recommended
Score: 3.0 to 3.75
Nutritional Objectives:
Replenish body
reserves to prepare for
next lactation
Avoid over
conditioning
25. Red Flags – Late Lactation
BCS < 3.0 BCS > 3.75
Too little energy provided Too much energy
in ration provided in ration
Problems likely began Also may result from
earlier in the lactation extended calving intervals
26. BCS at Dry Off
Recommended Score:
3.25 to 3.75
Nutritional Objectives:
Prepare for next lactation
Maintain condition through
dry period – do not lose,
especially if cows enter dry
period fat
Avoid over conditioning by
feeding low-energy ration
with adequate protein,
minerals, and vitamins
27. Red Flags – Dry Cows
BCS < 3.25 BCS > 3.75
Too little energy provided Too much energy
in ration provided in ration
Problems likely began Also may result from
earlier in the lactation extended calving intervals
Avoid BCS loss in dry
period
28. Summary of Body
Condition Score Changes
over a Lactation
BCS at calving affects lactation
performance
If too thin, peak milk yields will be low and
reproduction will be delayed
If too fat, metabolic diseases are very likely
Early lactation – BCS lost
Used to support milk production
Extreme loss hurts reproductive activity
29. By 80 to 120 days into the lactation
Weight loss should be minimal
Cows should begin to regain condition
Essential for strong exhibition of estrus (heat) and
conception
After 120 days, all cows should be gaining
about 0.75 to 1.0 pounds per day
30. If a cow enters the dry period fat
Maintain body condition – DO NOT LOSE
If a cow enters the dry period thin
May add a little condition early (first 3 weeks)
Section 3 will look at ways to identify and
address body condition problems
31. Charting body condition during
a lactation can help
troubleshoot herd problems
See extension.psu.edu/dairynutrition to
download spreadsheet that plots BCS and
compares your animals to
ecommendations
32. Troubleshooting Tips
Indicators of body condition problems
Increase of 5 to 10% in rate of metabolic
disease
Cows not able to maintain persistency or peak
at expected levels of milk production
Wouldn’t you rather find these problems
before cows get sick and milk drops???
Score cows regularly to predict – and address
– potential problems before they happen
33. Suggested BCS Schedule
Calving
30 days after calving
First breeding
Pregnancy check
60 days before dry-off
Dry-off
Possibly mid dry period if cows are having
problems at calving or during early lactation
34. PSU 109 Compared to Recommended Body Condition Score
4.50
4.00
3.50
Body Condition Score
3.00
2.50
2.00
Normal Change Your Cow Goal
1.50
Lactation 4
118 lb Peak Milk, at 42 DIM Min Max
305-d milk 27,510 lb
1.00
-60 -30 0 30 60 90 120 150 180 210 240 270 300 330 360
Stage of Lactation - Days in Milk
35. PSU 263 Compared to Recommended Body Condition Score
4.50
4.00
3.50
Body Condition Score
3.00
2.50
2.00
Small Heifer with High Production Your Cow Goal
1.50
First Lactation, calved at 23 months
104 lb Peak Milk, at 140 DIM Min Max
305-d milk 24,730 lb
1.00
-60 -30 0 30 60 90 120 150 180 210 240 270 300 330 360
Stage of Lactation - Days in Milk
36. PSU 836 Compared to Recommended Body Condition Score
4.50
4.00
3.50
Body Condition Score
3.00
2.50
2.00
High Production Your Cow Goal
1.50
Lactation 4
178 lb Peak Milk, at 35 DIM Min Max
305-d milk 36,590 lb
1.00
-60 -30 0 30 60 90 120 150 180 210 240 270 300 330 360
Stage of Lactation - Days in Milk
37. PSU 975 Compared to Recommended Body Condition Score
4.50
4.00
3.50
Body Condition Score
3.00
2.50
2.00
Low Production Your Cow Goal
1.50
Lactation 4
97 lb Peak Milk, at 28 DIM Min Max
243-d Lactation 16,530 lb milk
1.00
-60 -30 0 30 60 90 120 150 180 210 240 270 300 330 360
Stage of Lactation - Days in Milk
38. Plan to Address BCS
Problems
Nutrition Checklist
Dry Matter Intake – especially of forages
Feeding sequence
Fiber level of rations
Feeding frequency
Ration palatability
Bottom line
Make sure cows are eating enough
Provide at least 45% of DMI from forage sources
39. If those are adequate…
Check ration to be sure it is properly balanced for
Protein, energy, minerals, and vitamins
Test the forages and balance rations for each
group of cows
When feeding hay crop silages, be sure to analyze for
bound protein and adjust the ration accordingly
Examine grain and forage quality – focus on
Fineness of chop or grind of the ingredients
Smell, acceptability, and pH
Look at the amounts of bypass protein, soluble
protein, starch ingredients, fats, and oils in the
ration
40. How to Achieve High Milk
Yields
Feed good-to-excellent quality forages
that stimulate eating and enable cows to
produce up to their maximum genetic
potential
41. Nutritional Strategies to Manage
BCS:
Early Lactation
Feed extra energy in early lactation to offset
negative energy balance
Added fat from oil seeds – no more than 5% of total
ration dry matter
Higher levels upset rumen fermentation and decrease forage
digestibility
Additional fat from bypass or protected fats (rumen inert)
– an additional 2% of ration dry matter
Total fat in ration should not exceed 7%
When oils and fats are added to the ration
Increase calcium, magnesium, phosphorus 10% on a dry
matter basis
42. Nutritional Strategies to Manage
BCS:
After Peak Milk
Cows should be gaining 0.75 to 1 lb per day
Balance ration to avoid over conditioning
If cows are getting too heavy
Protein may be limited, energy may be excessive
43. Nutritional Strategies to Manage
BCS:
Dry Cows
If cows fat at dry-off
Maintain condition to avoid weight loss
Feed average quality grass forages
Supplement 3 to 4 pounds of grain
Or, minimal amounts of corn silage and a grass
hay mixture
If cows are thin at dry-off
Feed good quality grass forages
Supplement 3 to 4 pounds of grain