Title: Basics to Small Farm Beef Cow Nutrition
1Basics to Small Farm Beef Cow Nutrition
Basics to Beef Cow Nutrition
- Adam Hady
- Agriculture Agent
- Richland County UWEX
2Key Nutrients
- Six Basic Nutrients
- Water
- Protein
- Carbohydrates
- Fats
- Minerals
- Vitamins
3Nutrient Requirements
- The amount of nutrient that an animal needs to
perform a specific purpose. - Determined by weight, sex, age, growth rate,
stage of production.
4Nutrient 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.
5Nutrient Composition
- Common information on the composition table for a
feed stuff are - Dry matter
- Crude Protein
- Energy
- Fiber
- Minerals
Feed Analysis
6Dry 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
7Crude 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. -
8Crude 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)
9Energy
- 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)
10Energy
- 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.
11Energy
- Sources
- Starch, fats, cellulose and proteins
- Majority of energy in beef cattle rations is the
cellulose in forage.
12Fiber
- 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.
13Minerals 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
14Minerals 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
15How Nutrients are Used
- Maintenance
- Lactation
- Growth
- Reproduction
- In order of priority for the cow
16TDN and CP
Source NRC, 2000
17Dry Matter Intakes
Source NRC, 2000
18Nutrients by Calving Cycle
Source NRC, 2000
19Adding 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
20Does 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
21Do We Meet Needs Just on Orchard Grass Hay???
Source NRC, 2000
22Pasture is a Gift
Source NRC, 2000
23Evaluating Your Feeding Program
- The best way to evaluate your feeding program is
by the animals themselves. - Use Body Condition Scoring as a guide.
24Body 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.
25Body Condition Scoring
- Score of 1-9
- Score of 1 is Sick and Weak.
- Score of 9 - Extremely Fat
- Want a score of 6
26When to Evaluate Body Score
- Key times to look at body condition scoring
- Beginning of your breeding season
- At weaning
- Calving time
27Sources References
- Nutrient Requirements of Beef Cattle, National
Research Council, 2000 - Livestock Feeds and Feeding, D.C. Church, 1991
- UW- Extension Beef Web Page http//www.uwex.edu/c
es/animalscience/beef/index.cfm - Iowa Beef Center http//www.iowabeefcenter.org/
- Body Condition Scoring Beef Cows, Virginia
Cooperative Extension publication 400-795.
http//www.ext.vt.edu/pubs/beef/400-795/400-795.pd
f - Its Cold Outside! Tips for Winter Livestock
Care by , Rhonda Gildersleeve Agriculture Agent
Iowa County UW Extension from the Weekend Farmer
Newsletter
28Questions ?????
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