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Basics to Small Farm Beef Cow Nutrition

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Basics to Beef Cow Nutrition Basics to Small Farm Beef Cow Nutrition Adam Hady Agriculture Agent Richland County UWEX Key Nutrients Six Basic Nutrients Water Protein ... – PowerPoint PPT presentation

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Title: Basics to Small Farm Beef Cow Nutrition


1
Basics to Small Farm Beef Cow Nutrition
Basics to Beef Cow Nutrition
  • Adam Hady
  • Agriculture Agent
  • Richland County UWEX

2
Key Nutrients
  • Six Basic Nutrients
  • Water
  • Protein
  • Carbohydrates
  • Fats
  • Minerals
  • Vitamins

3
Nutrient Requirements
  • The amount of nutrient that an animal needs to
    perform a specific purpose.
  • Determined by weight, sex, age, growth rate,
    stage of production.

4
Nutrient Composition
  • Nutrient composition is the amount of nutrients
    found in the feed source.
  • Nutrient Composition can be obtained from book
    values, which are just an averages for a feed, or
    you can have a feed analysis done.

5
Nutrient Composition
  • Common information on the composition table for a
    feed stuff are
  • Dry matter
  • Crude Protein
  • Energy
  • Fiber
  • Minerals

Feed Analysis
6
Dry Matter
  • The of a feed stuff that is not water.
  • For example If hay is 88 dry matter then a 45
    pound bale of hay would be 39.5 lbs of dry
    matter.
  • Rations will come in as pounds of dry matter (DM)
    or As Fed

7
Crude Proteins
  • Proteins are the building block for animals and
    are chains of amino acids
  • Crude protein is determined by the amount of
    Nitrogen (N) in a feed multiplied by 6.25
  • N is used to determine the amount of protein,
    because of the N is critical part of the amino
    acid structure and makes up approximately 16 of
    the protein structure.

8
Crude Proteins
  • Crude Protein in beef cow rations come primarily
    from the forage in the diet.
  • Pasture grass and forages are an excellent source
    of protein
  • There are also many protein supplements (feed
    that contain over 20 crude protein)

9
Energy
  • Energy is defined as the capacity to do work.
  • In animal nutrition is determined by biological
    heat production Calories (cal), Kilocalorie
    (kcal), or Megacalorie (Mcal)

10
Energy
  • Common measurements of energy in ration
    formulation
  • Gross Energy (GE) total amount of energy in a
    feed source
  • Digestible Energy (DE) Energy absorbed by the
    animal after consumption
  • Metabolizable Energy (ME) Energy that is
    available through feed consumption
  • Net Energy (NE) Similar to DE and ME
  • Total Digestible Nutrients (TDN) A method that
    calculates energy based on crude protein and
    fiber.

11
Energy
  • Sources
  • Starch, fats, cellulose and proteins
  • Majority of energy in beef cattle rations is the
    cellulose in forage.

12
Fiber
  • Estimates the amount of carbohydrate found in
    plants.
  • Unlike monogastrics, cattle utilize microbes in
    the rumen to breakdown the fiber, therefore
    providing energy to the animal.

13
Minerals and Vitamins
  • Minerals
  • Two categories macro and micro minerals
  • Crystalline substances that can not be
    synthesized in the animal.
  • They provide the foundations for structure and
    function in the animal

14
Minerals and Vitamins
  • Vitamins
  • Two categories water soluble and fat soluble
  • Some vitamins can be synthesized in the body
    others can not.
  • They provide the foundations for structure and
    function in the animal

15
How Nutrients are Used
  • Maintenance
  • Lactation
  • Growth
  • Reproduction
  • In order of priority for the cow

16
TDN and CP
Source NRC, 2000
17
Dry Matter Intakes
Source NRC, 2000
18
Nutrients by Calving Cycle
Source NRC, 2000
19
Adding Energy for the Elements
Rations of grain may be less effective than
having a sufficient supply of good quality
forages such as alfalfa or grass hay available at
all times, since fiber digestion produces body
heat in cattle . If animals are cleaning up
everything quickly after feeding and have nothing
to munch on until the next meal, you may not be
putting enough forage out at a time to meet their
extra needs during cold weather
Source Its Cold Outside
20
Does Only Hay Provide??
  • I am going to feed a Late Bloom Orchard Grass
    Hay.
  • For the example Nutrients that we have been
    using
  • TDN 54 DM
  • CP 8.4 DM

21
Do We Meet Needs Just on Orchard Grass Hay???
Source NRC, 2000
22
Pasture is a Gift
Source NRC, 2000
23
Evaluating Your Feeding Program
  • The best way to evaluate your feeding program is
    by the animals themselves.
  • Use Body Condition Scoring as a guide.

24
Body Score Condition Scoring
  • How this will help my feeding program
  • gives an indication of reproductive perforce
    based on body condition
  • Can give you an estimate of nutrient need.

25
Body Condition Scoring
  • Score of 1-9
  • Score of 1 is Sick and Weak.
  • Score of 9 - Extremely Fat
  • Want a score of 6

26
When to Evaluate Body Score
  • Key times to look at body condition scoring
  • Beginning of your breeding season
  • At weaning
  • Calving time

27
Sources References
  1. Nutrient Requirements of Beef Cattle, National
    Research Council, 2000
  2. Livestock Feeds and Feeding, D.C. Church, 1991
  3. UW- Extension Beef Web Page http//www.uwex.edu/c
    es/animalscience/beef/index.cfm
  4. Iowa Beef Center http//www.iowabeefcenter.org/
  5. Body Condition Scoring Beef Cows, Virginia
    Cooperative Extension publication 400-795.
    http//www.ext.vt.edu/pubs/beef/400-795/400-795.pd
    f
  6. Its Cold Outside! Tips for Winter Livestock
    Care by , Rhonda Gildersleeve Agriculture Agent
    Iowa County UW Extension from the Weekend Farmer
    Newsletter

28
Questions ?????
Questions?????
  • Presenter INFO
  • Adam Hady
  • Agriculture Agent
  • UWEX- Richland County
  • 608/647-6148
  • adam.hady_at_ces.uwex.edu

Presenter INFO Adam Hady Agriculture
Agent UWEX- Richland County 608/647-6148 adam.had
y_at_ces.uwex.edu Web site http//Richland.uwex.edu
Click on Agriculture
01/07
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