Skip to main content

Table 4 Association of gestation length, calving interval and postpartum days with other variables

From: Success rate of artificial insemination, reproductive performance and economic impact of failure of first service insemination: a retrospective study

  Gestation length in days (N = 2052) Calving interval in days (N = 2052) Postpartum days (N = 2052)
Variables Categories EMM (days) ± SE p-value EMM (days) ± SE p-value EMM (days) ± SE p-value
Genotype Local 278.1 ± 0.3962 0.1073 439 ± 6.79 0.0259 162 ± 6.36 0.0118
Crossbred 277.4 ± 0.1572   422 ± 2.72   145 ± 2.59  
Calving type PTC 272.8 ± 0.1206 <0.0001 421 ± 3.43 0.1255 148 ± 3.42 0.7518
FTC 282.9 ± 0.1311   429 ± 3.75   147 ± 3.74  
Fertility Normal 277.5 ± 0.4516 0.8138 369 ± 3.25 <.0001 90.9 ± 3.02 < 0.0001
Subfertility 277.6 ± 0.3240   453 ± 2.33   176.8 ± 2.19  
Parity Prim/Heifer 277.0 ± 0.3759 0.2287
Multiparous 277.6 ± 0.2599   425 ± 2.53   147 ± 2.41  
NSPC First AI 277.1 ± 0.1558 < 0.001 419 ± 2.74 < 0.001 142 ± 2.72 < 0.001
Second AI 279.8 ± 0.4153   450 ± 6.26   173 ± 6.20  
Third AI 278.1 ± 1.2094   461 ± 17.14   198 ± 16.98  
AI Season Summer 278.1 ± 0.2679 < 0.001 420 ± 4.82 0.3924 143 ± 4.51 0.6715
Spring 278.5 ± 0.2904   428 ± 4.93   149 ± 4.73  
Winter 276.8 ± 0.2917   430 ± 5.12   150 ± 4.83  
Autumn 276.2 ± 0.3138   420 ± 5.48   148 ± 5.31  
Calving season Summer 278.8 ± 0.2867 < 0.001 428 ± 4.83 0.4577 150 ± 4.81 0.3757
Spring 276.7 ± 0.2946   429 ± 5.12   153 ± 5.09  
Winter 275.9 ± 0.3086   422 ± 5.55   146 ± 5.52  
Autumn 278.1 ± 0.2669   419 ± 4.87   141 ± 4.84  
  1. EMM estimated marginal means