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Journal of Animal Science|February 1, 1995
The effect of caffeine on mammary gland development and milk yield in primiparous sowsS Li, R R HackerJournal of Dairy Science|November 1, 1989
Effect of chronobiological manipulation of lactation in the dairy cowN M Evans, R R HackerJournal of Animal Science|May 1, 1982
Estrogens and piglet viability. II. Effect of estrogen on piglet viabilityL A Bate, R R HackerJournal of Animal Science|May 1, 1982
Estrogens and piglet viability. I. Serum estrogen concentrations in pigletsL A Bate, R R HackerThe Canadian Veterinary Journal = La Revue Veterinaire Canadienne|February 1, 1993
Variables related to the progress of parturition and probability of stillbirth in swineH M Zaleski, R R HackerJournal of Animal Science|February 1, 1993
Effect of oxygen and neostigmine on stillbirth and pig viabilityH M Zaleski, R R HackerJournal of Animal Science|June 1, 1984
The effects of different photoperiods on reproduction in the sowA N Perera, R R HackerTheriogenology|May 1, 1997
Relationships between serum IGF-I concentrations and piglet development or neonatal viability following porcine somatotropin (pST) and insulin administration to gestating giltsC Okere, R R Hacker, G WercholaJournal of Dairy Science|June 1, 1991
Effect of chronobiological alteration of the circadian rhythm of prolactin and somatotropin release in the dairy cowN M Evans, R R Hacker, J HooverPageof 4