formulating rations in difficult years · the early lactation cow lipid poor environment average...
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Formulating Rations in Difficult Years
Charles J. Sniffen, Ph.D.Fencrest, LLC
Introduction Our producers are experiencing
unprecedented low milk prices combined with high feed prices
Feed cost is the biggest single cost along with labor on the farm
It is incumbent on us as nutritionists to provide the lowest possible price on feeds and to provide the best nutrition that we can
The TransitionLACTATION - REPRODUCTIVE CYCLE
Dry Lactating
Fetal Growth
DMI
Milk
0
DMI
EB/BC
50 70Days Relative to Calving
-60 -14
Transition
28
Body CSControlPeriod
200 305
40 21
Controlling Milk Components
0
120
60Lbs Milk
1.0
3.0
4.0
5.0
% ComponentMilk Volume
Milk Fat
Milk T Protein
0 30045 200
Days in MilkDays in Milk
The Dilution effect
look over time the volume shipped and the % milk true and crude protein and % fat in the milk.
You can increase the volume upward and the % components can go down
You can have volume go down and the % components go up
components shipped in both cases can remain the same
Farm Responsibilities
Providing consistent good quality forages
Providing flexible management Providing cow comfort Paying attention to the long term
Replacements – the future of the herd
What can we do?
Optimizing forages for all groups on the farm Do not guess on forage analyses – make
sure all forages are analyzed and are current
Assess all inventories of forages on the farm
Assess quality of storage and potential losses
Analyze forages for what? DM (for silages have
Koster tester on farm) Protein
SolP NH3
ADIP NDIP
NDF ADF
Lignin NDFd 24 (also 12h?)
Fermentation acids Starch
Starch Deg - 7h Sugars Ash
Macro and trace EE Other
Effective fiber Mycotoxins if necessary
Selecting a Template It is extremely important to select the right
template Look at the analysis of your forage and then
decide which forage in your master dictionary or your personal dictionary best matches the lab analyses
Modify the numbers Everything needs to add up to 100!!!
Establish Requirements
Define group formulating for Age, weight, milk Environment Management
Weighted Pen Average
Environment
Management
The Important concept is the walk through
Example OptimizationNDS
Example Optimization Dina Milk
Example Optimization - CPM
Example Optimization - CPM
Requirements – what to balance for? First Balance
DMI ME MP peNDF, Forage NDF NFC Peptide & NH3
RDP, %DM
Second Balance Fermentable NDF Lignin Fermentable
Starch Sugars Soluble fiber
Fat & FA Amino acids – Lys then
Met Final Balance
Minerals & Vitamins
Fiber RecommendationsNutrient Kg %Fraction %DM Good
Environment Average
Environment Poor
Environment Min Max Min Max Min Max
Dry Matter2 24.5
Ferm CHO Dry Matter
10.5 43 43 42 45 41 44 38 41
Total NDF 7.4 30 30 36 28 33 27 31
Forage NDF 5.2 70 22 21 23 22 24 23 25
peNDF 5.6 76.6 23 23 25 23 25 23 25
Lignin 0.9 11.7 3.5 3 4 3 5 4 6
Fermentable NDF 2.6 >32 10 9 11 10 12 11 13
NFC RecommendationsNutrient Kg %Fraction %DM Good
Environment Average
Environment Poor
Environment Min Max Min Max Min Max
NFC 9.3 38 42 44 37 39 36 38
Fermentation Acids 0.0 <5
Sugar 1.7 7 5 6 6 7 7 8
Ferm Sugar 84 5.9 3.75 4.5 4.5 5.25 5.25 6
Starch 6.1 25 25 28 23 25 21 23
Fermentable starch 5.1 84 21 20 22 18 20 17 18
Soluble Fiber 1.7 7 3 5 4 6 6 8
Ferm. SolF 1.2 84 5.9 2.4 4 3.2 4.8 4.8 6.4
Vitreousness & Starch Availability Shaver, 2002
Variation in Starch Degradability in Corn Silage CVAS 2008
Frequency
1241 samples
LIPID RECOMMENDATIONS FOR THE EARLY LACTATION COW
Lipid Poor Environment
Average Environment
Good Environment
Total Lipid, %DM 5 – 7 4 – 5 3 – 4 Total Unsaturated, %DM
3 3 3
18:1C+18:2+18:3, %DMI
2.5 2.6 2.7
Saturated, %DM 2 1 0 – 1 Bypass, %DM 2 0 – 1 0
Protein and Amino Acid Nutrition
The key to protein nutrition starts with adequate peptides and NH3 to meet microbial requirements Dietary Recycled from animal and from protozoa
Need to improve ability to predict microbial yield
Amino acid flow from feeds will change Will be using Degussa database
Amino acid requirements are changing