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Biology of Reproduction|December 22, 1998
Effects of porcine follicular fluid and oviduct-conditioned media on maturation and fertilization of porcine oocytes in vitroG Vatzias, D R HagenBiology of Reproduction|June 1, 1985
The effect of exogenous testosterone on homospermic and heterospermic fertility in the cockD R Hagen, P J DziukJournal of Reproduction and Fertility|September 1, 1981
Detection of the effects of ingested caffeine on fertility of cocks by homospermic and heterospermic inseminationD R Hagen, P J DziukGrowth, Development, and Aging : GDA|January 1, 1991
Effects of nutrient intake and sexual age of the dam at mating on fetal development in swineK A Bryan, D R HagenJournal of Animal Science|October 1, 1987
Relationship of estrone and prolactin with growth and survival of piglets to 35 d of ageC Farmer, R S Kensinger, D R HagenJournal of Animal Science|April 1, 1987
Estrone concentration in sow milk during and after parturitionC Farmer, S K Houtz, D R HagenBiology of Reproduction|March 1, 1984
Restriction of uterine space reduces litter size in feral Ossabaw swineD R Hagen, C P Shuey, J L WatkinsMolecular Reproduction and Development|January 1, 1991
Response of porcine oocytes to electrical and chemical activation during maturation in vitroD R Hagen, R S Prather, N L FirstJournal of Animal Science|August 1, 1990
Effect of treatment with and subsequent withdrawal of exogenous porcine somatotropin on growth and reproductive characteristics of giltsK A Bryan, A M Clark, D R HagenPoultry Science|May 1, 1982
Relationship between progesterone and egg production in pheasantsM M Mashaly, M L Webb, D R HagenPageof 3