Table 1.
Descriptive statistics of calving to conception interval (days open) under analysis.
Fig 1.
Kaplan-Meier estimates of survivor function of days open in dairy cows.
Table 2.
Log-rank (Mantel-Cox) test of equality of the survival distributions for the different levels of factors on days open of dairy cows.
Table 3.
Multivariate Cox proportional hazards model of days open of dairy cows in Dessie and Kombolcha.
Fig 2.
Kaplan-Meier estimates of survivor function for the days open of dairy cows with the season of insemination category.
Fig 3.
Kaplan-Meier estimates of survivor function for the days open with calving to insemination category.
Fig 4.
Kaplan-Meier estimates of survivor function for days open with the breeding system used category.