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Induction and maintenance of oestradiol and immunoreactive inhibin production with FSH by ovine granulosa cells cultured in serum-free media.

• Bruce K. Campbell, Rex John Scaramuzzi, R. Brian Webb
• Journal of reproduction and fertility
• 1996

A serum-free ovine granulosa cell culture system is described that allows the induction of FSH-responsive oestradiol production by undifferentiated cells from small (< 3.5 mm) follicles (P < 0.001)… (More)

A review of the effects of supplementary nutrition in the ewe on the concentrations of reproductive and metabolic hormones and the mechanisms that regulate folliculogenesis and ovulation rate.

• Rex John Scaramuzzi, Bruce K. Campbell, +4 authors Anongnart Somchit
• Reproduction, nutrition, development
• 2006

This paper discusses the phenomenon of nutritional flushing in ewes whereby increased nutrition stimulates folliculogenesis and ovulation rate. In addition the paper reviews recent findings on the… (More)

Heat stress and seasonal effects on reproduction in the dairy cow--a review.

• Fabio De Rensis, Rex John Scaramuzzi
• Theriogenology
• 2003

In dairy cows inseminated during the hot months of the year, there is a decrease in fertility. Different factors contribute to this situation; the most important are a consequence of increased… (More)

Ovulation rate and the concentrations of gonadotrophic and metabolic hormones in ewes fed lupin grain.

• Jeff A Downing, Jean J. Joss, Paul Patrick Connell, Rex John Scaramuzzi
• Journal of reproduction and fertility
• 1995

An experiment in which a lupin grain supplement was fed to ewes (n = 11) over days 2-13 of the oestrous cycle was carried out. A group of 12 ewes was used as a control and not fed the supplement.… (More)

Folliculogenesis and ovarian expression of mRNA encoding aromatase in anoestrous sheep after 5 days of glucose or glucosamine infusion or supplementary lupin feeding.

• Minerva Muñoz-Gutiérrez, Dominique Blache, G B Martin, Rex John Scaramuzzi
• Reproduction
• 2002

Improved nutrition increases ovulation rate in sheep and there is evidence that intra-ovarian pathways mediate responses to nutrition. An experiment was conducted to examine the effect of dietary… (More)

Regulation of folliculogenesis and the determination of ovulation rate in ruminants.

• Rex John Scaramuzzi, DavidT. Baird, +11 authors Richard Webb
• Reproduction, fertility, and development
• 2011

The paper presents an update of our 1993 model of ovarian follicular development in ruminants, based on knowledge gained from the past 15 years of research. The model addresses the sequence of events… (More)

Effect of nutritional supplementation on quantities of glucose transporters 1 and 4 in sheep granulosa and theca cells.

• Suzannah A Williams, Dominique Blache, G B Martin, Robert Foot, Margaret Anne Blackberry, Rex John Scaramuzzi
• Reproduction
• 2001

The stimulatory effect of nutritional supplementation on ovarian activity in sheep has been linked to an increase in glucose availability that, with insulin, directly decreases follicular… (More)

The mRNA expression of prostaglandin E receptors EP2 and EP4 and the changes in glycosaminoglycans in the sheep cervix during the estrous cycle.

• Claire M Kershaw-Young, Muhammad Tanweer Khalid, M R Mcgowan, Andrew A. Pitsillides, Rex John Scaramuzzi
• Theriogenology
• 2009

Transcervical artificial insemination in sheep is limited by the inability to completely penetrate the cervix with an inseminating pipette. Penetration is partially enhanced at estrus due to a degree… (More)

Ovulation rate and the concentrations of gonadotrophins and metabolic hormones in ewes infused with glucose during the late luteal phase of the oestrous cycle.

• Jeff A Downing, Jean J. Joss, Rex John Scaramuzzi
• The Journal of endocrinology
• 1995

The positive relationship between nutrition and ovulation rate was investigated in sheep infused intravenously with glucose. Ovulation rate increased (2.0 +/- 0.0 vs 2.4 +/- 0.3) when ewes were given… (More)

The effect of short-term nutritional supplementation of ewes with lupin grain (Lupinus luteus), during the luteal phase of the estrous cycle on the number of ovarian follicles and the concentrations…

• Anongnart Somchit, Bruce K. Campbell, Muhammad Tanweer Khalid, Nigel R Kendall, Rex John Scaramuzzi
• Theriogenology
• 2007

An experiment was conducted using 16 cyclic, Welsh Mountain ewes during the luteal phase of the estrous cycle to determine the effect of a 5-day period of feeding a high-energy high-protein diet… (More)

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