The objective of the study was to determine the eff ect of puerperal metritis prevalence in high yieldi ng Holstein cows on productive (305 days, actual milk yields), reproductive (days to first estrus, days o pen and services per conception) variables and culling rate s. Throughout the study, 2885 dairy records were collected from high yielding private Holstein dairy farm (average milk yield was up to 9000 kg) for 3 successive lactation seasons. Dairy cows were class ified according to their uterine affection into two groups, healthy and those with puerperal metritis. Dairy cows which affected with puerperal metritis w ere diagnosed during the first 3 weeks of lactation. Me tritic cows were diagnosed and treated at the discr etion of the herd veterinarian. Affected dairy cows were grouped into four groups according to time of the puerperal metritis attack during the first 21 Days In Milk (DIM) as ( 15 DIM, respectively). Moreover, the dairy females were gro uped into 3 groups according to frequency of puerpe ral metritis of once, twice and triple, respectively. D airy cows were also grouped according to their calv ing season (winter, spring, summer and fall calving sea sons). Productive, reproductive variables and culli ng due to puerperal metritis were detected from the on-far m record system (DairyComp305). Results of this study revealed that, puerperal metritis had bad effects o n high yielding cows productive and reproductive variables, that decreased the 305 milk yield, incre ased days to first estrus, days open and number of services per conception. Moreover, the occurrence of puerper al metritis increased during the warm months of spr ing and summer seasons. Also, the occurrence of such di sease was increased during the first 10 days of postpartum as (89.98%) of the affected cases occurr ed within this period. Care must be directed to dai ry cows which had a history of puerperal metritis as t hese cases had a greater tendency for recurrence. A lso, the re- attacked cows with puerperal metritis had a great chance to be culled from the dairy herds, as they reached to (53.33% and 100%) for the second and third attack, respectively.
ABSTRACT
PUBLICATION RECORD
- Publication year
2014
- Venue
American Journal of Animal and Veterinary Sciences
- Publication date
2014-11-12
- Fields of study
Agricultural and Food Sciences, Biology
- Identifiers
- External record
- Source metadata
Semantic Scholar
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