Download Chapter 23 - UGA Extension

A BRIEF INTRODUCTION TO
THE WUFFDA PROGRAM
LECTURE AND TURORIAL
FOR CHAPTER 23
FEED FORMULATION :
SPECIFYING PROPORTIONS
POULTRY NUTRITION
FUNDAMENTALS
Chapter 23
Section I.
INTRODUCTION
FORMULATION PROGRAM
ADVANCED CAPABILITIES
• RATIOS BETWEEN NUTRIENTS & RATIOS
BETWEEN INGREDIENTS
– HOW TO SPECIFY AMINO ACIDS AS A
PERCENTAGE OF PROTEIN, THE ENERGY TO
PROTEIN RATIO, OR THE CALCIUM TO
PHOSPHORUS RATIO?
– HOW TO SPECIFY INGREDIENT RATIOS, LIKE
OYSTER SHELL TO LIMESTONE, OR
CONCENTRATE TO FORAGE?
Chapter 23
Section I I.
PROPORTIONS BETWEEN
NUTRIENT MINIMUMS
OPEN THE WUFFDA ENGLISH.XLS
WORKBOOK OR THE LAST WORKBOOK
FROM CHAPTER 22
ADD FISH MEAL, FEATHER
MEAL, OYSTER SHELL,
METHIONINE, THREONINE AND
TRYPTOPHAN TO THE LAST
PROBLEM IN CHAPTER 22.
SPECIFY AMINO ACIDS AS A % OF DIET
REMEMBER TO ENTER MAXIMUMS
SO THE PROGRAM DOESN’T
ASSUME ZERO’S
SOLVE, & PRINT YOUR ANSWERS
ENERGY, PROTEIN, CA, P, LYS AND TSAA
ARE ALL AT THEIR REQUIREMENT LEVELS
SPECIFY AMINO ACIDS AS A % PROTEIN
SOLVE, & PRINT YOUR ANSWERS
NUTRIENT LEVELS APPEAR THE SAME,
INGREDIENT LEVELS ARE CHANGED
SLIGHTLY
CHANGE THE PROTEIN MINIMUM TO 20%
WITHOUT CHANGING AMINO ACID
REQUIREMENTS
SOLVE, & PRINT YOUR ANSWERS
AMINO ACID REQUIREMENTS AND
AMOUNTS SUPPLIED SHOULD CHANGE
AUTOMATICALLY WITH PROTEIN LEVEL
Chapter 23
Section III.
EXACT PROPORTIONS
BETWEEN NUTRIENTS
TYPE IN: “Ca:P” IN CELL P2,
“2” IN CELL P3 (FOR A 2:1 RATIO),
“=I5-($P$3*J5)” IN CELL P5.
COPY CELL P5 DOWN COLUMN P
INGREDIENTS WITH MORE CA THAN P
SHOULD HAVE A POSITIVE NUMBER,
LESS A NEGATIVE NUMBER IN
COLUMN P
SET THE MINIMUM AND MAXIMUM FOR
Ca:P BOTH TO 0 (ZERO), AND REMOVE
THE MINIMUM ON AVAIL. PHOS.
SOLVE, & PRINT YOUR ANSWERS
AVAIL. PHOS. SHOULD STILL BE AT 0.45
% DESPITE THERE BEING NO
REQUIREMENT SPECIFIED EXCEPT ON
THE INGREDIENTS WORKSHEET
CHANGE THE CALCIUM MINIMUM,
SOLVE THE PROBLEM AND OBSERVE
WHAT HAPPENS TO THE AVAIL. PHOS.
LEVEL IN THE SOLUTION
Ca AND AVAIL. PHOS. SHOULD REMAIN
IN A 2:1 RATIO
Chapter 23
Section IV.
SPECIFYING INGREDIENT
CLASS MINIMUMS
ADD A COLUMN FOR “ANIMAL
PRODUCTS”
GIVE EACH ONE A VALUE OF 100
(EXCEPT POULTRY GREASE AND
OYSTER SHELL)
RESTRICT THE USE OF FEATHER MEAL
TO 2 % OF THE FEED
RESTRICT THE USE OF ANIMAL
PRODUCTS TO 3 % OF THE FEED
SOLVE, & PRINT YOUR ANSWERS
SOLVE THE PROBLEM WITH 3, 5 AND 7
% ANIMAL PRODUCTS AND NOTE THE
INFLUENCE ON FORMULA COST
Chapter 23
Section IV.
SPECIFYING INGREDIENT
CLASS MINIMUMS
CHANGE THE
NUTRIENT
REQUIREMENTS
TO A LAYER FEED
SOLVE, & PRINT YOUR ANSWERS
THE SOLUTION
HAS ALL
LIMESTONE & NO
OYSTER SHELL
BASED ON COST
ADD
COLUMNS
FOR
PULVERIZED
AND COURSE
Ca SOURCES
ADD “=R5-($T$3*S5)” IN CELL T5.
COPY CELL T5 DOWN COLUMN T
SOLVE, & PRINT YOUR ANSWERS
THE SOLUTION
HAS HALF
LIMESTONE &
HALF OYSTER
SHELL
FEED FORMULATION :
PROPORTIONS PROGRAMMING
• ANSWER THE QUESTIONS ON PAGE
23-7
• TURN IN YOUR
– PRINTOUTS
– ANSWERS ON PAGE 23-7