Let’s see how much damage eating St. John’s wort has caused this chick

  • Let’s see how much damage eating St. John’s wort has caused this chick
    FarmIreland.t. E.
    Cavan vet Gerard McGovern came across this a case of photosensitivity in Frisian cow recently on the farm.
    https://www.independent.ie/business/farming/dairy/dairy-advice/see-what-damage-eating-st-johns-wort-caused-this-heifer-37232855.html
    https://www.independent.ie/incoming/article37232765.ece/6e72e/AUTOCROP/h342/ee8636fa212f85f2f5e3249bbd59e167.jpg

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Cavan vet Gerard McGovern came across this a case of photosensitivity in Frisian cow recently on the farm.

In the case of chronic photosensitivity in Frisian cow, shows damage not a pigmented skin that is still red and inflamed, leaving pigmented areas in the beams of the black Islands.

He said that in this case the acute phase of the condition happened a few weeks ago, with the white hair is already growing back.

Primary photosensitization, he said, caused by compounds in the blood, which react with sunlight, causing damage to the skin.

This occurs when an animal eats a plant like St. John’s wort, which contains a photodynamic substance that accumulates in the bloodstream and reacts with UV light to release chemicals, damage to the skin without pigment.

A veterinarian from the veterinary clinic in Ballyconnell Derryginney said that this is a very painful condition of the animals, especially if it affects a large area of skin, and because sun light causes condition dark house is always helpful in treating the condition.

Secondary photosensitivity occurs when the animal pathology of the liver (liver damage) and liver cells are not able to mobilize phylloerythrin (a breakdown product of chlorophyll), which accumulates in the blood, acting as a photodynamic substance, he said.

The main symptoms of photosensitivity include:

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· Twitching, flicking of ears and tail

· Irritability, stamped their feet on their own

· Swelling around the eyes, ears, udder and feet

· Hair loss, redness, thickening and scaling of affected skin

In the acute phase, steroids and non-steroidal anti-inflammatory drugs and antibiotics will help, and emollients damaged skin will also help, he said.

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