Cows at 2 Texas dairy farms have bird flu
LUBBOCK — Cows in the Texas Panhandle have tested positive for the bird flu, another blow to the state’s dairy industry following historic wildfires that killed at least 7,000 livestock.
The discovery, reported at two dairies, is believed to mark the first time the disease has been found in livestock, researchers say.
Strains of highly pathogenic avian influenza, commonly known as the bird flu, were confirmed Monday by the U.S. Secretary of Agriculture and the Animal and Plant Health Inspection Service. The state agriculture department is also monitoring the outbreak. Similar outbreaks have been reported at dairies in Kansas and New Mexico.
The U.S. Department of Agriculture said there is no concern regarding safety of the commercial milk supply. Consumer health is also not at risk, the department said. The milk from impacted animals is being dumped or destroyed and will not enter the food supply.
“In the rare event that some affected milk enters the food
chain, the pasteurization process will kill the virus,” Texas Agriculture Commissioner Sid Miller said.
The dairy industry is critical for the state. With about 292 dairies and an estimated 625,000 cows, Texas ranks fourth in the U.S. in milk production, contributing roughly $50 billion to the state’s economy. In the Panhandle, also known as Cattle Country, more than 1.3 billion gallons of milk are produced each year, according to data from the Texas
Association of Dairymen. The highest rates of production are in Hartley, Castro and Moore counties.
According to the Texas Animal Health Commission, the disease is causing a decrease in milk production, as well as thicker, colostrum-like milk, and cows have reduced appetites. The disease is also severely impacting older cows and cows in mid-lactation. Infected herds are expected to lose up to 40% of their milk production for seven to 10 days until they recover from their symptoms, Miller said.
On average, about 10% of each affected herd appears to be infected. The USDA did not specify whether any cows have died from the disease. And experts say it can be difficult to track as dairies are culling cattle for other reasons.
Milk loss from infected cows is “too limited” to have a major impact on supply.
“There should be no impact on the price of milk or other dairy products,” the USDA said in a statement.
Multiple agencies are working quickly to monitor the affected herds and conduct additional testing. The disease moves rapidly from bird to bird, but experts say the disease is uncommon for dairy herds.
“We have never seen avian influenza in dairy cows before,” said Erin Supak, director of communications for the animal health commission. “So, we’re encouraging best management practices and enhanced biosecurity measures to be put in place and ensure the spread is not going to go farther than it already has.”
The disease appears to have been introduced to the herds by deceased wild birds, according to the USDA. The conclusion comes after farms reported finding the dead birds on their properties.
The animal health commission is working with the federal agriculture department and the Texas A&M Veterinary Medical Diagnostic Laboratory, as well as other agencies, to continue evaluating the situation. Experts are recommending that access to dairies be limited to employees and essential workers, and to use biosecurity resources.
Supak said that other signs for dairy producers to watch for include abnormal, tacky feces; low appetite; and fever.
Dairy farmers and veterinarians are encouraged to report cattle illnesses to the USDA, state animal health commission or the Texas A&M lab, as the situation is ongoing. Initial testing by the National Veterinary Services Laboratories shows the current risk to the public is low, as no changes in the virus have made it more transmissible to humans.