Skip to main content

Table 1 Effect of bovine somatotropin administered at insemination on the proportion of cows inseminated at first service that became pregnant (Experiment 1).a

From: Pregnancy success of lactating Holstein cows after a single administration of a sustained-release formulation of recombinant bovine somatotropin

  Control bST p AOR CI
Cows bred at estrus 20/65 (31%) 19/65 (29%)    
Cows subject to TAI 11/35 (31%) 10/35 (29%)    
Total 31/100 (31%) 29/100 (29%) NS 0.96 0.69–1.32
  1. a Abbreviations are bST; bovine somatotropin; AOR, adjusted odds ratio; CI, 95% confidence interval.
  2. b Data are the number of cows pregnant/total cows inseminated and, in parentheses, percent pregnant.