Prevalence and Risk Factors of Clinical Mastitis in Holstein Cows under Subtropical Egyptian Conditions
Faris, D., El-Bayoumi, K., El-Taranany, M., Abdel-Hamed, A., Kamel, E. (2021). Prevalence and Risk Factors of Clinical Mastitis in Holstein Cows under Subtropical Egyptian Conditions. EKB Journal Management System, 41(1), 19-23. doi: 10.21608/bvmj.2021.88567.1456
Dina N Faris; Khairy M El-Bayoumi; Mahmoud Salah El-Taranany; Amira Mohamed Abdel-Hamed; Eman Ramadan Kamel. "Prevalence and Risk Factors of Clinical Mastitis in Holstein Cows under Subtropical Egyptian Conditions". EKB Journal Management System, 41, 1, 2021, 19-23. doi: 10.21608/bvmj.2021.88567.1456
Faris, D., El-Bayoumi, K., El-Taranany, M., Abdel-Hamed, A., Kamel, E. (2021). 'Prevalence and Risk Factors of Clinical Mastitis in Holstein Cows under Subtropical Egyptian Conditions', EKB Journal Management System, 41(1), pp. 19-23. doi: 10.21608/bvmj.2021.88567.1456
Faris, D., El-Bayoumi, K., El-Taranany, M., Abdel-Hamed, A., Kamel, E. Prevalence and Risk Factors of Clinical Mastitis in Holstein Cows under Subtropical Egyptian Conditions. EKB Journal Management System, 2021; 41(1): 19-23. doi: 10.21608/bvmj.2021.88567.1456

Prevalence and Risk Factors of Clinical Mastitis in Holstein Cows under Subtropical Egyptian Conditions

Benha Veterinary Medical Journal
Article 4, Volume 41, Issue 1, October 2021, Page 19-23  XML PDF (378.1 K)
Document Type: Original Article
DOI: 10.21608/bvmj.2021.88567.1456
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Authors
Dina N Faris email orcid 1; Khairy M El-Bayoumi2; Mahmoud Salah El-Tarananyorcid 2; Amira Mohamed Abdel-Hamedorcid 1; Eman Ramadan Kamel3
1Animal wealth development department, Faculty of veterinary medicine, Benha University
2Animal wealth development department, Faculty of veterinary medicine, Zagazig University
3Animal Wealth Development Department, Faculty of veterinary medicine, Benha university
Abstract
The current study was built on 1015 dairy records of Holstein Friesian cows, aimed to determine the prevalence and risk factors of clinical mastitis (CM). Logistic regression models were conducted to determine the risk factors associated with the onset of CM. The average age at 1st calving was 1.98 years in mastitic cows, and 2.01 years in healthy onest. DMY was shown to be somewhat lower in mastitic cows than in healthy (31.9 and 32.3 kg, respectively). Older dairy cows >5 years had a higher incidence of mastitis (53.56%). The prevalence of CM was higher in multiparous cows, either 2nd parity (48.24%) or ≥ 3rd parity (47.23%). Regarding the calving season, cows that calved in winter showed a lower percentage of CM (38.36%). Pregnant cows were found to have a greater incidence of CM than non-pregnant cows (59.35% and 32.89%, respectively). Concerning the history of the previous mastitis, cows that were infected previously showed a higher prevalence of CM (51.66%). The greatest percentage of CM was observed in cows in the early and mid stages of lactation (44.59% and 52.69%, respectively). The final multivariate logistic regression model revealed that age at 1st calving had a significant positive correlation with the incidence of CM (β=1.19, P-value= 0.003). Older cows >5 years ( (OR=1.79), cows calved during the summer season (OR=1.84), Pregnant cows (OR=7.27), cows with a history of previous mastitis (OR=1.81), and lactating cows at early lactation stage (1-90 days) were significant risk factors associated with an increased incidence of CM.
Keywords
Clinical mastitis; Holsteins; Logistic regression; Risk factors
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