Vets Working With Feeder Cattle Nutrition

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Vets Working With Feeder Cattle Nutrition
http//gpvec.unl.edu
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Simply Put It is all up to you.

• Involvement can be
• As simple as providing on call service and
  gripping about the feeding management
  
• As complex as being part of a management team

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Possible Management Areas

• Health Maintenance Management
• Medical Management
• Treatment Protocols Necropsy
• Nutrition Focus on newly received cattle
• Data management analysis
• Environmental
• Marketing at least understand it!
• Quality Assurance training monitoring

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Solving Problems On Feedyards Frequently Requires
Working On
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Vets have a symbiotic relationship with Nuts

• Vets
• Work with
• MEDS

• Nuts
• Work with
• RATS

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Nutritional Diseases

• Acidosis
• Laminitis
• Polio

• AIP
• Urinary Calculi
• Water Intox.

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Nutrient Loss

• Environmental
• Mud
• 4 -14
• Cold
• 0º F 15
• Heat
• Decrease intake

• Antagonistic Feeds
• Negative disassociative factor
• Occurs when rat feedstuffs require different
  bugs.
  

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Rat Balancing

• Resource Management (avail feedstuffs)
• Inventory control Assets Equity
• Aerobic stability of starting rations
• Equipment People Record Req.
• Formulate ends divide intermediates
• Balance the big stuff
• Tweak the little stuff
• Get the drugs RIGHT
• QC test (sample, freeze, test)
• Monitor Intakes against projected intakes
• Back calculate performance

AutoNRC
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Problem Sick Weaned Feeder

• 600 lb Intake 1.1 BW (DMB)
• intake 6.6 lbs DM
• Protein Requirement 1.9 lbs CP
• Receiving Ration 13.2 CP
• 600 x 2.5 BW 15 lb x 13.2 2 lb CP
• Soy Bean Meal (SBM) 48
• How much SBM must be added to meet the sick
  calfs requirements?

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Answer Sick Weaned Feeder

• Intake 6.6 lbs (DM) Needs 1.9 lb CP
• 1.9 / 6.6 28.8 CP
• R-Rat 13.2 CP 28.8 15.6 parts SBM
• SBM 48.0 CP 28.8 19.2 parts R-Rat
• Total 34.8 parts
• R-Rat 55.2 , SBM 44.8

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Feed Additives (all added on air dry basis
ADB No ELDU)

• MGA estrus control
• ADG 10
• FE 5 to 6
• /- Carcass Quality
• Rumensin intake control
• ADG /- 0
• FE 7 to 10 (roughage)
• /- Carcass Quality
• Bovatec
• ADG 6 to 7
• FE 7 to 10

• CTC Aureo-S-700 - sickness
• ADG 20 , FE 15
• all short term (28 days)
• Decrease sickness 10 to 35
• Can feed 10mg/lb/d 5 days
• WD 10 days
• Tylan / OTC - Liver abscess
• A livers
• ADG - 3 to 5 ,
• FE - 7

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Animal Medicinal Drug Use Clarification Act
(AMDUCA) Scope

• Applies only to approved animal human
  drugs
  
• Valid VCPR
• Lay ELDU not allowed
• Does not allow ELDU of feed additives

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AMDUCA Scope

• ELDU permitted only when animals health is
  threatened or animal is suffering.
  
• Therapeutic only.
• No ELDU allowed for production purposes
• Implants reproductive etc

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Feed Additives Legal Combinations
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Starting Cattle On Feed

• Feed on DMB (50 NEg)
• 1 BW ½ Hay
• 1.5 BW by 7 days no hay
• Increase 0.5 BW each 7 days
• Never do 2 things at the same time
• ie, Change Rat Change Delivery
• Control aggression hay or bunk deliveries
• Sickness will dictate intake deliveries

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Acidosis

• Biochemical physiological stresses caused by
  rapid excessive production absorption of
  organic acids endotoxins when an animal over
  consumes a meal of readily fermentable
  carbohydrates, usually grains.
• The severity of the acidosis insult determines
  the symptoms observed subacute (ph acute (ph

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Typical pH Feed Response
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Acidosis Symptoms

• Acute
• Visible
• Diet Transition
• Intake Regulation
• Forage fill
• Grain chem mech
• SDS, PEM, Liv Abs
• Wall damage
• Reduce absorb
• Reduce gain FE
• Founder (previous 45)

• Subacute
• Difficult to observe
• Reduced intake
• Pen conditions
• Individual reduction masked by pen average
• Erratic feed intake patterns
• Intake ?? pH

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Subclinical Acidosis
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DMI pH Response
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Reduced Intakes Cost
IW 700, OW 1400, Feed 100 (DMB), OH
0.30/D
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Acidosis Factors

• Grain Source Processing
• Rate extent of ruminal digestion
• Roughage Source Processing
• Additives (ionophore, buffer, etc)
• Rat Step Up Management
• Sudden Intake Change
• Environmental Change

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Intake Prediction Is Everything

• The best way to predict intake
• CONTROL IT ! take charge of the bunk
• Intake prediction equations

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Bunk Management

• Slick vs. Adlib
• Slick (clean) clean up daily
• Adlib never let the bunk run out
• Cattle are evening dawn eaters
• Deliveries 60 40
• Once a day feed in the evening

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Bunk Management

• Bunk Space dictates frequency
• (6 to 12) less space more often
• Moisture dictates frequency
• Aerobic stability fermented feeds sour
• Retained Moist Feed Mold

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Bunk Management

• 4 Rs
• Right Rat, Right Pen, Right Amt, Right Time
• 3 Ws of reading bunks
• Whats in the bunk
• Whats do the cattle look like
• What time is it relative to last feeding next
  scheduled feeding
  
• Read Record Read Record Clock IT

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Water

• The most important nutrient right?
• Know what other nutrients are in the water SO4
• Requirement 8 to 10 BW
• 1000 critter needs 10 gallons a day
• UNLESS its hot
• Heat (82º F) double water need
• Hide color affects water needs in the heat
• RESERVE CAPACITY IS EVERYTHING
• Days water needs in 2 hrs when it is hot
• Measure when system is stressed (2 hrs post
  feeding)

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Implants humans

• Lets look at sources of estrogens

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Implants
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Implants Growth
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Implant Strategies

• Start LOW Finish HIGH
• Re-implant during Pay-Out Window
• Must be eating
• implants require fuel
• Effects on tenderness
• YES (says CSU Research)
• Effects on Reproduction YES !!!

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Buller Syndrome an enigma

• PHYTOESTROGEN (Plant ESTROGEN)
• Also molds including bunk molds
• Not associated with DOF
• Weather (Hot Dry) yes, but
• Bunk Management yes, but
• Association with Implants burst
• Peak release following implanting
• Implant location (middle 1/3) maybe
• Crushed pellets I doubt it.

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Sick signs

• Depression
• Fill shape texture
• Loose feces
• Stiffness
• Nasal discharge Watery eyes
• Cough / breathing rate
• Rectal Temperature ???
• Dont let a thermometer do your thinkin

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How Sick Cattle Eat

• Pull any new calf that is slow to come to the
  bunkLook for sick cattle shortly after putting
  out feed.

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Sick Intake vs. Temp
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Feeding Sick Calves

• Get a good nutritionist
• High quality feedstuffs
• Formulate for low intakes
• Bunk management
• Intake is everything
• I hate hay feeders

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What Makes You Think You Are Qualified To Work
With Nutrition?

• Attended any seminars?
• Special Training?
• What do you bring to the table?
• It just takes practice
• Were good at that.

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http//gpvec.unl.edu