Risk factors for repeat breeder dairy cows and their impacts on reproductive performance

The objective of this study was to identify risk factors for repeat breeder dairy cows and their impact on reproductive performance. characteristics 1,504 cows, including peripartum health, nutrition, production, reproduction, were collected. Cows with metabolic disorder significantly more likely (odds ratio [OR], 2.47; p < 0.001) clinical endometritis tended be (OR, 1.35; 0.1) become breeders than without endometritis, respectively. initially inseminated > 80 days after calving less 0.78; 0.05) ≤ calving. As a result, breeding in resulted 90 day longer (p 0.0001) mean interval from pregnancy. In conclusion, postpartum disorder, short initial insemination resulting severely impaired