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EVALUATION OF PASSIVE TRANSFER IN NINE SPECIES OF CERVIDAE.

Anne E Rivas1, Marc Valitutto2, Jean M Lay2

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Summary

Assessing passive transfer in cervids requires multiple tests. A panel of packed cell volume (PCV), total solids (TS), blood glucose (BG), and enzyme tests, alongside neonate condition, aids in diagnosing failure of passive transfer (FPT).

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Area of Science:

  • Veterinary Medicine
  • Wildlife Health
  • Comparative Physiology

Background:

  • Passive transfer of colostral immunoglobulins is crucial for neonatal cervid survival.
  • Accurate assessment of passive transfer status is vital for wildlife health management.
  • Previous studies have not comprehensively evaluated multiple diagnostic parameters across diverse cervid species.

Purpose of the Study:

  • To evaluate the reliability of packed cell volumes (PCV), total solids (TS), blood glucose (BG), γ-glutamyl transferase (GGT), and glutaraldehyde test for assessing passive transfer in nine cervid species.
  • To determine if these parameters, when used collectively, improve the diagnosis of failure of passive transfer (FPT).
  • To identify potential species-specific variations in test results.

Main Methods:

  • Investigated nine cervid species: axis deer, hog deer, sika deer, tufted deer, Père David's deer, pudu, sambar deer, barasinga deer, and Eld's deer.
  • Assessed the reliability of PCV, TS, BG, GGT, and glutaraldehyde test in determining passive transfer.
  • Analyzed test results individually and collectively as a panel, considering neonate condition.

Main Results:

  • Individually, PCV, TS, BG, GGT, and glutaraldehyde tests were significant but imperfect predictors of passive transfer status in cervids.
  • Interpreted collectively as a panel, alongside neonate condition, these tests proved clinically helpful in diagnosing FPT.
  • Identified some species-specific variations in TS, GGT, and glutaraldehyde test results among the studied cervids.

Conclusions:

  • A collective interpretation of PCV, TS, BG, GGT, and glutaraldehyde test results as a panel is recommended for diagnosing FPT in cervids.
  • Integrating clinical assessment of the neonate with panel test results enhances diagnostic accuracy.
  • Awareness of species-specific variations in certain parameters is important for precise interpretation.