Dairy Heifer Raiser study raises red flag

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The recently released "Dairy Heifer Raiser, 2011" study, from the USDA's National Animal Health Monitoring System, provides an overview of the management practices used on heifer-raising operations.

Among the results, the study sheds light on the practice of using a single needle to vaccinate multiple heifers:

  • Almost four of 10 operations (38.8 percent) vaccinated two to 10 heifers with each needle.

  • One-fourth (25.2 percent) vaccinated 11 to 20 heifers before changing needles.

  • More than 30 heifers were vaccinated with a single needle on 14.6 percent of operations.

The study authors warn that using a single needle to vaccinate multiple heifers can result in transmission of certain diseases. In addition, needles used on multiple heifers eventually become dull, resulting in tissue trauma, pain and the possibility of broken needles.

Source: Dairy Heifer Raiser, 2011, National Animal Health Monitoring System

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newengland  |  November, 20, 2012 at 09:45 AM

This is one of the reasons why a number of dairy and beef heifers loose value and fail to qualify for export due to certain diseases that could be controlled or minimize with basic management practices...

Pa  |  November, 21, 2012 at 10:55 AM

Is there empirical data to support any of these speculations? if so, which diseases are subject to transmittal? What frequency? What is the frequency Of broken needles in single use vs multiple use?

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