Manure: What It Tells You About Cattle Health

Reading What Manure Tells You

Manure is one of the most overlooked yet valuable diagnostic tools available to ranchers. Every day, cattle produce visible evidence of their digestive health, nutritional status, and potential disease conditions. Learning to read manure signs can alert you to problems before clinical illness becomes obvious.

It's not the most pleasant topic, but understanding what normal manure looks like and recognizing abnormalities can save animals and prevent economic losses. This guide gives you a systematic approach to manure assessment as part of your overall herd health monitoring.

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Normal Manure Characteristics

Appearance by Animal Type

• Forms distinct "pie" shape when dropped
• Medium brown color
• Stacks 1.5-2 inches high
• Some visible fiber present
• No excessive liquid
• Lighter brown to yellowish color
• Less fiber visible
• Flatter spread when dropped
• More mucus coating (normal)
• Yellow to light brown
• No visible fiber (no roughage yet)
• Changes as rumen develops

Normal Daily Output

Normal Odor

• Characteristic barnyard smell
• Not excessively foul
• Not sickly sweet
• Not strongly acidic

The Manure Scoring System

Score 1: Too Dry/Firm

• Very dry texture
• Falls apart when stepped on
• May not fully evacuate
• Inadequate water intake
• Low-quality, high-fiber diet
• Possible obstruction

Score 2: Slightly Firm

• Holds shape well
• Slightly drier than ideal
• Clear concentric rings visible
• Often acceptable in dry conditions
• High forage diet

Score 3: Ideal Consistency

• Forms "pie" that stacks
• 1.5-2 inches high
• Moderate fiber visible
• Some dimpling on surface
• Balanced diet
• Good hydration

Score 4: Loose

• Spreads out
• Less than 1 inch high
• May have some splatter
• Beginning of digestive upset
• Watch for progression to score 5

Score 5: Watery/Diarrhea

• Splatters when dropped
• No form at all
• May project backward
• Scours
• Requires investigation and likely treatment

Color Interpretation

Normal Color Range

• Dark brown: High forage/dry hay diet
• Medium brown: Mixed diet, standard
• Light brown: Higher grain component
• Green-brown: Fresh pasture

Abnormal Colors

Color with Consistency Changes

• Or reduced feed intake
• Rapid transit time
• Serious digestive upset
• Often self-limiting
• Monitor for progression

Consistency Changes and Causes

Soft Manure/Loose Stool

• Diet change
• Excess grain
• Stress during transport/handling
• Bacterial infection
• Viral infection (BVD, etc.)
• Coccidiosis
• Johne's disease (chronic wasting with diarrhea)

Very Firm/Hard Manure

• Very mature hay
• Inadequate water access
• Fiber too coarse
• Water restriction
• Obstruction (rare)
• Fever reducing appetite

Mucus in Manure

• More common with grain diets
• Provides lubrication
• Indicates irritation
• Could signal parasites
• Coccidiosis produces mucus
• Large intestine inflammation

Blood in Manure

• Coccidiosis in calves
• Rectal injury
• Large intestine issue
• Abomasal ulcers
• Intestinal bleeding
• Very serious sign

Age-Specific Manure Assessment

Newborn Calves (First Days)

• Sticky, tar-like
• Should pass within 24 hours
• Failure to pass = problem
• Pasty consistency
• Mild odor

Young Calves (1-8 Weeks)

• Pasty consistency
• Mild odor
• Passes easily
• White, yellow, or bloody color
• Foul odor
• Dehydration developing

Weaning-Age Calves

• Fiber appears as hay/grass eaten
• Color darkens
• Consistency firms up
• Watch for coccidiosis
• Monitor hydration

Adult Cattle

• Dry winter hay = firmer
• Heat stress = may be softer

Manure-Related Disease Conditions

Coccidiosis

• Mucus present
• Straining to defecate
• Foul odor
• Dehydration
• Rough coat
• Weight loss

Johne's Disease

• "Pipe-stream" appearance
• No blood or mucus
• Doesn't respond to treatment
• Normal appetite initially
• Eventually becomes weak

Salmonellosis

• Foul smelling
• May contain blood/mucus
• Often sudden onset
• Severe depression
• May see multiple animals affected

Grain Overload (Acidosis)

• May be foamy
• Sour/acidic smell
• Progresses to watery
• Laminitis (founder)
• Rumen stasis
• Sudden death in severe cases

Winter Dysentery

• Dark color, may contain blood
• Affects multiple animals
• Usually runs through herd in 1-2 weeks
• Mild depression
• Usually self-limiting

Environmental Observation

Manure Distribution in Pasture

• Some distribution throughout pasture
• Near shade/rest areas
• Evidence of straining (piles with spray around)
• Very concentrated (overcrowding?)

Pen/Lot Assessment

• Note any blood or mucus
• Identify affected animals if possible
• Check water sources (contamination?)

Individual Animal Tracking

• Note manure on tail/hindquarters
• Dried feces pattern on legs

Assessment Protocol

Quick Daily Scan

• Evidence of diarrhea on animals (soiled tails)
• Straining animals
• General consistency of manure in area

Individual Animal Assessment

• Soiling visible on hindquarters
• Behavior changes noted
• Score consistency (1-5)
• Note color
• Check for blood/mucus
• Assess odor if close enough

Herd-Level Assessment

• Diet changes occurring
• Post-weaning monitoring
• Routine health checks
• Sample manure piles (freshness matters)
• Score representative samples
• Note any abnormal findings

Integration with Other Health Signs

Manure + Body Condition

Manure + Behavior

Manure + Appetite

Decision Guide

Monitor Only

• Soft manure in animals on lush pasture
• Slight looseness after diet change
• Individual animal with one-time soft stool
• No other symptoms present

Treat at Home

• Calf scours identified early
• Electrolytes started promptly
• Cause identified (environmental, dietary)
• Response seen within 24-48 hours

Veterinary Consultation

• Blood in manure (any amount)
• Severe watery diarrhea lasting >24 hours
• Multiple animals affected suddenly
• No response to initial treatment
• Suspected Johne's disease
• Fever accompanying diarrhea

Emergency

• Severe bloody diarrhea
• Signs of shock (weakness, cold extremities)
• Suspected grain overload
• Black tarry stool (upper GI bleeding)
• Calf severely dehydrated

Record Keeping

Individual Records

• Consistency score
• Color description
• Blood/mucus presence
• Other symptoms
• Treatment given
• Response

Herd Records

• Seasonal patterns
• Response to diet changes
• Disease outbreaks

Prevention and Management

Dietary Consistency

• Make feed changes gradually
• Transition to pasture over 7-14 days
• Limit grain access for unacclimated cattle
• Ensure consistent water access

Environment Management

• Keep feeding areas clean
• Prevent manure contamination of water
• Manage mud in high-traffic areas
• Appropriate stocking density

Monitoring Protocol

• Daily visual check of manure in pens
• Weekly pasture walk assessment
• Immediate response to abnormalities
• Track patterns over time

Frequently Asked Questions

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Bottom Line

• Know normal - Understand what healthy manure looks like for your cattle's diet
• Score consistently - Use the 1-5 scale for objective tracking
• Act on blood - Any blood in manure warrants attention
• Consider context - Diet, weather, and stress all affect manure
• Correlate signs - Manure findings combined with other symptoms guide decisions

Related Articles

• Calf Scours Prevention and Treatment
• Internal Parasite Control Strategies
• Body Condition Scoring Guide
• Daily Herd Observation Protocol

References

• Smith, B.P. (2015). Large Animal Internal Medicine. Mosby Elsevier.
• Texas A&M AgriLife Extension. (2024). Recognizing and Preventing Calf Scours. Publication E-234.
• Radostits, O.M., et al. (2007). Veterinary Medicine: A Textbook of the Diseases of Cattle, Horses, Sheep, Pigs and Goats. Saunders Elsevier.
• Beef Quality Assurance. (2024). Cattle Health Assessment Guidelines.
• Iowa State University Extension. (2023). Calf Scours: Causes, Prevention, and Treatment.
• USDA-APHIS. (2023). Johne's Disease in Cattle. Veterinary Services Fact Sheet.

Article published by AnimalSafeRanch.com | Last updated: January 2026 Reviewed by: Licensed veterinarians and beef cattle specialists