Duration of estrus in relation to reproduction results in pigs on commercial farms.

  title={Duration of estrus in relation to reproduction results in pigs on commercial farms.},
  author={D W Steverink and N. M. Soede and G J Groenland and F W van Schie and J. P. T. M. Noordhuizen and Bas Kemp},
  journal={Journal of animal science},
  volume={77 4},
This research was conducted to determine factors that influence duration of estrus, AI strategy, and reproduction results between and within commercial swine farms that use AI. Data from 15,186 sows and gilts on 55 farms for a period of 6.1+/-4.2 mo per farm were used in this study. The average duration of estrus was 48.4+/-1.0 h, ranging from 31 to 64 h, and was consistent from month to month within a farm (repeatability of 86%). Differences in duration of estrus between farms accounted for 23… CONTINUE READING

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