@misc{indiciaedfae160b49a4,
  title = {Butorphanol tartrate acts to decrease sow activity, which could lead to reduced pig crushing.},
  author = {M F Haussmann and D C Lay and H S Buchanan and J G Hopper},
  year = {1999},
  doi = {10.2527/1999.7782054x},
  url = {https://pubmed.ncbi.nlm.nih.gov/10461981/},
  note = {Source identifier: 10461981}
}