Diseases & Disorders

All Diseases & Disorders Content

Mosquito with darker coloration and mosquito with white band on proboscis.

Know Your West Nile Virus Vectors

In some areas of South Dakota, recent precipitation has led to an increase in mosquito activity. To reduce the chances of contracting West Nile Virus, it is important to understand the behavior of the mosquitos capable of vectoring it.

A vet and a producer examining a calf with the calf's mother in the foreground.

Are You Moving Enough Air in Your Calving Barn? Part 2: Effects of ineffective winter ventilation

High humidity, moisture, and increased levels of air contaminants due to ineffective ventilation can lead to significant health issues in our animals. This is especially of concern to our most sensitive sub-population, newborns and the very young. Even calves that receive adequate colostrum and a good nutritional start to life will have health challenges if they live in highly contaminated environments.

row of black angus cattle at a feedbunk

Feedlot Pen Maintenance Allows Cattle to Walk Easier

Beef feedlot operations are faced with daily tasks of managing feed and cattle inventory, animal health, labor, operational activities and marketing of the resident cattle in the yards. No less important are details to manage the feedlot environment and facilities.

Entrance to the Animal Disease Research and Diagnostic Laboratory at South Dakota State University.

How Would Veterinary Diagnostic Labs Test for African Swine Fever?

What would African Swine Fever testing look like through the lens of our veterinary diagnostic laboratories? Interestingly, we know exactly what it looks like, because it’s already being done at sites such as the Animal Disease Research and Diagnostic Laboratory at South Dakota State University.

Yellow and green leaf of oats. Yellowing color is a symptom of Barley yellow dwarf virus.

Barley Yellow Dwarf Developing in Oats

A few oat fields that were recently scouted were found to have barley yellow dwarf virus infected plants. The infected plants were few and scattered throughout the oat fields.

A newborn calf with its mother in a snowy field

Will Health Effects Linger in Beef Calves Following Harsh Spring Weather?

Beef herds calving in late winter or early spring flirt with disaster annually when it comes to bitter weather conditions. It’s a rare year when a prolonged cold snap or snowstorm doesn’t occur during this critical period. In the throes of those weather conditions, calf health and even survival can be directly affected.

Face and nose of a black cow.

What Livestock Owners Should Know About Vesicular Stomatitis

Because it’s not a common occurrence in most areas every year, reports of Vesicular Stomatitis (VS) in the media often raise questions among livestock owners. Here are answers to some of the more-common ones that may pop up.

grey to brown fly with large eyes and elongated mouthparts

What are Those Gigantic Flies?

As we progress later into the summer, we commonly see an increase in horse fly activity.

A herd of cattle gather around a stock pond on a vast, lush grassland. Courtesy: USDA [CC BY 2.0]

The Environmental Disease Called Pinkeye

Plentiful moisture during the grazing season might contribute to what could be called a “bad year” for a certain cattle disease: pinkeye.

A hereford calf in a field with flies on its face.

The Different Sides of Pinkeye Treatment

Pinkeye (or infectious keratoconjunctivitis) is a scourge that most cattle operations will deal with at some point. Regardless of the type of cattle affected or time of year, prevention always beats treatment.