Seasonal influences on conception efficiency in Minnesota dairy herds.

@article{Udomprasert1987SeasonalIO,
  title={Seasonal influences on conception efficiency in Minnesota dairy herds.},
  author={Preeyaphan Udomprasert and Norm Williamson},
  journal={Theriogenology},
  year={1987},
  volume={28 3},
  pages={323-36}
}
This study was undertaken to investigate the influence of climatological factors on the conception efficiency of cows in 23 Minnesota dairy herds between March 1982 and March 1985. It was found that year of insemination (P < 0.005), herd (P < 0.005), linear and quadratic terms of days open (P < 0.05), and linear and quadratic terms of minimum temperature (MNT), maximum temperature (MXT) and temperature humidity index (THI) were similarly related to observed monthly variations in first service… CONTINUE READING