[1] Utah State Univ, Dept Anim Dairy & Vet Sci, Logan, UT 84322 USA
[2] Utah State Univ, Anim Dairy & Vet Sci Bovine Reprod Herd Hlth, Logan, UT 84322 USA
[3] Utah State Univ, Anim Dairy & Vet Sci Reprod Physiol & Immunol, Dev Biol, Logan, UT 84322 USA
[4] Utah State Univ, Dept Math & Stat, Logan, UT 84322 USA
[5] Utah State Univ, Dept Anim Dairy & Vet Sci, Agr Expt Stn Dev Genet & Epigenet, Logan, UT 84322 USA