Effects of twinning on gestation length, retained placenta, and dystocia.

  title={Effects of twinning on gestation length, retained placenta, and dystocia.},
  author={Sherrill E. Echternkamp and Keith E. Gregory},
  journal={Journal of animal science},
  volume={77 1},
Constraints to maximal productivity from twinning in beef cattle include increased incidence of dystocia and retained placenta, longer postpartum interval, and lower conception rate. Incidence and cause(s) of the shorter gestation length and of the increased retained placenta and dystocia associated with twinning were evaluated for 3,370 single and 1,014 twin births produced in a population of cattle selected for natural twin births. Gestation length was shorter for twin than for single… 

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