AN ESTIMATION OF NATIONAL AVERAGE OF MILK SOMATIC CELL COUNT AND PRODUCTION LOSSES DUE TO SUBCLINICAL MASTITIS IN COMMERCIAL DAIRY HERDS IN IRAN

Bolourchi, Mahmoud; Mokhber Dezfouli, Mohamad Reza; Kasravi, Reza; Moghimi Esfandabadi, Ahmad; Hovarashti, Parviz

AN ESTIMATION OF NATIONAL AVERAGE OF MILK SOMATIC CELL COUNT AND PRODUCTION LOSSES DUE TO SUBCLINICAL MASTITIS IN COMMERCIAL DAIRY HERDS IN IRAN

Authors

Mahmoud Bolourchi

Mohamad Reza Mokhber Dezfouli

Reza Kasravi

Ahmad Moghimi Esfandabadi

Parviz Hovarashti

Abstract

U sing the database of the Animal Breeding Center ofIran and based on the eligible test-day data from 78969 cows in five provinces: Tehran (with 44129 cows), Ghazvin (6668), Zanjan (1767), Isfahan (7572), Khorasan-e-Razavi (14521) and others (4312) the averages of 426850 ± 966840 and 473860 ± 605330 cells/ml of milk somatic cell count (SCC) was calculated for individual cows and herds respectively. A Pearson's correlation coefficient of -0.174 revealed a highly significant negative correlation between test-day milk production and SCC (p

Keywords

national average

production loss

SCC

subclinical mastitis.