Fig. 3: Rumination time and milk production in cows with and without clinical influenza during the follow-up period.
From: The impact of highly pathogenic avian influenza H5N1 virus infection on dairy cows
Adjusted means for rumination time (a; min/day) and milk production (b; kg/day) in cows with and without clinical influenza diagnosis estimated using mixed linear regression by date (n = 311,701 records). Models accounted for days in milk, lactation number, and breed. Models included cow-ID as a random effect and an autoregressive correlation structure. Error bars represent 95% confidence intervals. The shaded area represents the period (March 21 to April 13, 2024) with at least one cow having a new clinical diagnosis of influenza in the study herd. Data derived from n = 3662 cows.
