References

1. Vinson, R.A.; Muirhead, M.R. Veterinary Services. In Diseases of Swine, 6th Ed.; Leman, A.D., Straw, B., Glock, R.D., Mengeling, W.L., Penny, R.H.C., Scholl, E., Eds.; Iowa State University Press: Ames, 1986; 885 912.

2. Dziuk, P.J. Effect of migration, distribution and spacing of pig embryos on pregnancy and fetal survival. J. Reprod. Fertil. 1985, 48 (supplement), 57 63.

3. Geisert, R.D.; Zavy, M.T.; Wetteman, R.P.; Biggers, B.G. Length of pseudopregnancy and pattern of uterine protein release as influenced by time and duration of oestrogen administration in the pig. J. Reprod. Fertil. 1987, 79, 163 171.

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