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Related Experiment Videos

Pine needle abortion in cattle: pathological observations.

L D Stuart1, L F James, K E Panter

  • 1Colorado Veterinary Laboratory, Broomfield 80020.

The Cornell Veterinarian
|January 1, 1989
PubMed
Summary
This summary is machine-generated.

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Feeding ponderosa pine needles to pregnant cows can cause abortions and death. This study confirmed pine needle toxicity in cattle, leading to severe septicemia and calf mortality.

Area of Science:

  • Veterinary Toxicology
  • Ruminant Nutrition
  • Animal Pathology

Background:

  • Ponderosa pine (Pinus ponderosa) needle ingestion by pregnant cattle is a known risk factor for reproductive failure.
  • Abortion in cows grazing on toxic plants can lead to complications such as retained placenta and subsequent mortality.

Purpose of the Study:

  • To investigate the toxic effects of ponderosa pine needles on pregnant cows.
  • To determine the pathological outcomes and mortality rates associated with pine needle consumption.

Main Methods:

  • Ten pregnant cows were used in an experimental study.
  • Six cows were fed ponderosa pine needles, while four served as a control group.
  • Clinical signs, abortion rates, mortality, and gross/histopathological lesions were documented.

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Main Results:

  • All six cows fed pine needles aborted their pregnancies.
  • Three cows died from severe septicemia following abortion, with extensive tissue necrosis observed.
  • Three of the six calves born to cows on the pine needle diet died shortly after birth; the remaining three were weak but survived with intensive care.

Conclusions:

  • Ponderosa pine needle consumption is highly toxic to pregnant cattle, frequently causing abortion and potentially fatal septicemia.
  • The study confirms the abortifacient and teratogenic properties of ponderosa pine needles in livestock.
  • Veterinary intervention is crucial for managing complications and improving calf survival rates in affected herds.