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Journal of Reproduction and Fertility|November 1, 1979
Plasma oestrogen, progesterone and other reproductive responses of gilts to photoperiodsR R Hacker, G J King, B N Ntunde, et al.
Journal of Animal Science|June 1, 1994
Factors affecting excretory behavior of pigsR R Hacker, J R Ogilvie, W D Morrison, et al.
Journal of Pineal Research|April 2, 1999
Melatonin concentrations in the luminal fluid, mucosa, and muscularis of the bovine and porcine gastrointestinal tractG A Bubenik, R R Hacker, G M Brown, et al.
Journal of Dairy Science|July 1, 1977
Incidence of clinical mastitis in a herd of Holstein cattleT R Batra, B J Nonnechke, F H Newbould, et al.
Journal of Animal Science|August 1, 1994
Influence of light dark cycles on estradiol-17 beta induced luteinizing hormone patterns of the prepuberal giltN M Evans, F D Evans, A Maher, et al.
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