DPC 32, Component Test Variations in Raw Milk (Fat, Protein, Other Solids)

Item #: DPC-032

Published: 2012

Pages: 16

This guideline discusses many possible reasons for component (fat, protein, other solids) test variations in raw milk. It provides information regarding proper milk sampling techniques, references laboratory component testing methods and explains reasons for variations between DHIA and handler component tests. Additionally, the guideline covers the basics of a wide range of farm production practices that can influence component test results.

DISCLAIMER: The DPC is not responsible for the use or application of the information provided in this Guideline. It is the responsibility of the user to ensure that the information addresses their needs and that any action taken complies with appropriate regulations and standards.

Table of Contents:
INTRODUCTION
GUIDELINES FOR SAMPLING AND SAMPLE CARE
SAMPLING PROCEDURES AND CARE OF SAMPLES
     Sampling Equipment
     Sample Identification
     Temperature Control Sample
     Sampling Procedures
     Milk of Questionable Condition
     Sample Storage and Care of Samples in Transit
     Other Sample Handling Issues
     Irregular Milk Pickup
     Partial Pickup
LABORATORY ANALYSIS
GUIDELINES FOR PRODUCERS
REASONS FOR COMPONENT TEST VARIATIONS
     Day-To-Day Variation
     Lactation
     Seasonal
     Health Problems
     Age
     Exercise
     In Heat Estrus
     Nutrition
     Feeding Facilities
     Milking Practices
     Sample Handling and Testing
COMPARING DHIA AND PAYMENT TESTS
     Comparing Tests for the Same Period
PERFORMANCE OF BULK MILK TANKS
    Freezing
    Churning
LARGE DAIRY FARMS
    Sample Collection on Large Farms
    Sampling Ports
    Multiple Bulk Tank Farms
    Milking Directly Onto a Tanker
    Farms with Scales
    Plant Load Samples on Single Load Producers
    Testing Large Farms
     Large Dairy Farms Future
REFERENCES

All DPC Guidelines go through an extensive peer review process. More information is available here.

DPC 32, Component Test Variations in Raw Milk (Fat, Protein, Other Solids)

Click to enlarge

Printed Guidelines only available by request by emailing the DPC.

Digital E-Guideline (PDF)
$8.50

Quantity: