Abstract
BackgroundOur aim was to investigate the incidence and prevalence of clinical mastitis, peracute mastitis, metabolic disorders, and peripartum disorders, and to examine factors affecting the prevalence of each disease in cows raised on a large dairy farm in a temperate climate in Japan. The present study was performed on a large commercial dairy farm with approximately 2500 Holstein cows. Data were collected from 2014 to 2018, and involved 9663 calving records for 4256 cows.ResultsThe incidence rate on the farm was 21.9% for clinical mastitis, 10.4% for peracute mastitis, 2.9% for metabolic disorders, and 3.2% for peripartum disorders. The prevalence rates for clinical mastitis, peracute mastitis, metabolic disorders, and peripartum disorders were 28.0, 13.3, 3.7, and 4.0%, respectively. In all four diseases, the probability of time to occurrence for each disease was associated with parity and calving season (P < 0.05). Regarding metabolic disorders and peripartum disorders, the probability of occurrence decreased during the first 10 days after calving.ConclusionsOur results showed that clinical mastitis occurred most often in this temperate zone, and that metabolic disorders and peripartum disorders occurred from calving to day 10 post-calving.
Highlights
Our aim was to investigate the incidence and prevalence of clinical mastitis, peracute mastitis, metabolic disorders, and peripartum disorders, and to examine factors affecting the prevalence of each disease in cows raised on a large dairy farm in a temperate climate in Japan
The objective of the present study was to investigate the incidence and prevalence of clinical mastitis, peracute mastitis, metabolic disorders, and peripartum disorders, and to examine factors affecting the prevalence of each disease in cows raised on a large dairy farm in a temperate zone
Clinical mastitis and peracute mastitis occurred during all stages of production: proportions of clinical mastitis and peracute mastitis during 0–60 days, 61– 120 days, 121–180 days and 181 days or later after calving were 38.6, 20.2, 15.2 and 26.0%, and 33.3, 28.9, 16.3 and 21.5%, respectively, whereas metabolic disorders and peripartum disorders occurred mainly within 1 month after calving
Summary
Our aim was to investigate the incidence and prevalence of clinical mastitis, peracute mastitis, metabolic disorders, and peripartum disorders, and to examine factors affecting the prevalence of each disease in cows raised on a large dairy farm in a temperate climate in Japan. Some farms are Fukushima et al BMC Veterinary Research (2020) 16:389 with a disease at a specific time point (point prevalence) or over a specified time period (period prevalence) [36]. Both indicators are important to investigate a population’s health status. Parity, season, and production stage are risk factors associated with mastitis, metabolic disorders, and peripartum disorders in cows in cold climates
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