Farms.com Home   News

University of Minnesota Report: H5N1 Dairy Cow Study Finds Sustained Milk Production Drop, Extensive Transmission Across Herd

By Lisa Schnirring

Scientists who examined the impact of an H5N1 avian flu outbreak in an Ohio dairy herd that had about 3,900 cows found a milk production drop in clinically affected cows that lasted 60 days and extensive asymptomatic infections in other cows. The team, led by researchers at Cornell University, published their findings as a preprint study in Nature Portfolio.

The first illness in the herd was noted about 2 weeks after apparently healthy lactating cows from Texas were introduced into the herd. Decreased rumination and a decline in milk production appeared to decline about 5 days before clinical diagnosis.

Source : umaine.edu

Trending Video

Cow-Calf Corner: Why Early Pregnancy Checks Make or Break Cow-Calf Profits

Video: Cow-Calf Corner: Why Early Pregnancy Checks Make or Break Cow-Calf Profits

In this Cow-Calf Corner update, Mark Johnson, OSU Extension beef cattle breeding specialist, highlights the importance of early pregnancy checks for replacement heifers. He explains how timely testing helps producers identify open cows and implement effective culling strategies to protect herd efficiency and profitability.