الهلاك بمرض التهاب الرحم في أبقار الهولشتاين في العراق

Abstract EN

This study depended on dairy cattle veterinarian and breeding records belong to Holstein cows at AL-Nasr station in Al-Soueira form 1998 to 2001,the data analyzed by using General Linear Model procedure within statistical analysis system(SAS, 2001) to show the effect of following fixed factors : parity , year , season in mortality occurrences with metritis in Holstein cows , Restricted Maximum Likelihood (REML) reserved to estimate the variance component for random effects .

The overall mean for mortality rate by metritis was 0.13% and unsignificantly affected by parity , year and season .

Higher mortalities were at fourth and fifth parity which received to 2.94% and 2.90% respectively, mortalities in summer (1.87%) was in higher than other seasons.

There were no mortality because of metritis in 1998 and 2001 while it received 0.21 and 0.31% for 1999 and 2000 respectively.

The estimation of heritability for metritis mortality rate was zero .This study concluded that metritis mortality were abet relatively and there is no effect for genetic on metritis mortality