body condition scoring - ag.ndsu.edu · what is bcs body condition simply refers to the degree of...
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Body Condition ScoringBeef Cows
What, How, Why, When
John DhuyvetterNCREC Minot, ND
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What is BCS
Body condition simply refers to the degree of fleshiness or fatness of a cowFatness is measured by a simple numeric scoring system of 1 to 91 is extremely thin, 9 is extremely fat, 5 is average or moderate80-100 lbs body weight equals one condition score
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How to BCS
Visual assessment of appearanceAngular and sharp vs smooth and blocky
Specifically look for areas of fat deposition and muscle deterioration
- back and spine- ribs- brisket- hooks and pins- tail head
Account for hair coat, fill, pregnancy status, age
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1 EMACIATED - Cow is extremely emaciated with no palpable fat detectable over spinous processes, transverse processes, hip bone or ribs. Tail-head and ribs project quite prominently.2 POOR - Cow still appears somewhat emaciated but tail-head and ribs less prominent. Individual spinous processes are still rather sharp to the touch but some tissue cover exists along the spine.3 THIN - Ribs are still individually identifiable but not
quite as sharp to the touch. There is obvious palpable fat along spine and over tail-head with some tissue cover over dorsal portion of ribs.
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BCS 3
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4 BORDERLINE - Individual ribs are no longer visually obvious. The spinous processes can be identified individually on palpation but feel rounded rather than sharp. Some fat cover over ribs, transverse processes and hip5 MODERATE - Cow has generally good overall appearance. Upon palpation, fat cover over ribs feels spongy and areas on either side of tail-head now have palpable fat cover.6 HIGH MODERATE - Firm pressure now needs to be applied to feel spinous processes. A high degree of fat is palpable over ribs and around tail-head
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BCS 4 and 5
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7 GOOD - Cow appears fleshy and obviously carries considerable fat. Very spongy fat cover over ribs and around tail-head. In fact, "rounds" or "pones" beginning to be obvious. Somefat around vulva and in crotch.
8 FAT - Cow very fleshy and over-conditioned. Spinousprocesses almost impossible to palpate. Cow has large fat deposits over ribs, around tail-head and below vulva. "Rounds" or "pones" are obvious.9 EXTREMELY FAT - Cow obviously extremely wastyand patchy and looks blocky. Tail-head and hips buried in fatty tissue and "rounds' or "pones" of fat are protruding. Bone structure no longer visible and barely palpable. Animal's mobility may even be impaired by large fatty
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BCS 6 and 7
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Why BCS
Cow condition reflects the recent and current nutritional status Nutritional status has a relationship to health and production and future requirements
Calf vigor and survivalCow rebreedingMilk yield and calf weaning weightLongevity and salvage value
Fine line in managing cow nutrition to control feed costs and optimize health and productivityFine tunes cow weight data in genetic evaluations of mature size and cow productivity
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Thin cows can be costing you
Why are they thinHealth problemCompetitionToo little feedToo poor of feed
Typical weight lossoverstockingLate weaningPoor winter feedHigh milking
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BCS at calving critical to rebreeding
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Effects on calf born to thin dams
Less immunity from lower amounts and concentration colostrumLonger duration labor and birthing stressLess internal fat reserves and more prone to chillingMore susceptible to scours and other health problemsGreater death loss Reduced weaning weight from lower milk production
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Maintenance goes up in the cold
8 Months Bred – 0 degrees F
1200 lb BCS 4 - 17.2 lbs TDN
1300 lb BCS 6 - 16.6 lbs TDN
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Effects on longevity and replacement
49%13.5%5.825
4%28.0%4.523
Probability of being in herd at age 11
ReplacementRate
AverageCow Age
WeaningBCS
65%12.5%6.026
15%19.3%5.054
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You can’t make up for lost ground
Very difficult and expensive to recondition (high gain) cows that are thin in late gestation or lactating
Flushing cows on high energy rations in lactation prior to breeding is helpful but seldom can you achieve the same results as for cows calved in good condition
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BCS 4 1300 lb cow to gain 1 lb/day
$1.12$.79$.57
37 lbs34.5 lbs33 lbs
$65/ton$45/ton$35/ton
65%60%55%
21.2 TDN18.6 TDN16.1 TDN
Lact – 1 monGest – 8 monGest – 4 mon
Apr 50 degreesFeb 0 degreesOct 30 degrees
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Not Fat and Not Thin BCS 5 – moderate flesh
BCS 5The minimum target for mature cows in late gestation and at calvingNot much reserve for periods of very coldNeed to meet post calving/lactation needs to maintain calving interval
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Smooth BCS 6
Target for bred heifers and young cows
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Generally good fertility of cows > BCS 5
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These are fleshy, fat cows BCS 7+
If extreme they can cost you too
Higher feed expenseGreater calving difficultyLower conception
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When to BCS
Cow weight and condition will fluctuate through year and production cycleIt is not feasible to balance energy requirement daily, weight gain and loose often the most efficientCritical periods and condition targets
Prior to onset of winter extremesLate gestation and calvingBreeding
Continually watch and appraise cows to change and statusMost critical for young and developing females
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Nutritional Needs
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Cow Weight Change Pattern
0
2
4
6
8
10
12
14
J F M A M J J A S O N D
WEIGHTBCS
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What do you think?
What is her BCS?
Is it OK for fall?
What would be your feeding plan?
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What do think
What is her BCS ?
What would be your feeding plan ?
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Thanks, Questions or Comments?