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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.
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 theExpand
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Ovulation rate and the concentrations of gonadotrophic and metabolic hormones in ewes fed lupin grain.
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.Expand
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A model for follicle selection and the determination of ovulation rate in the ewe.
A model for folliculogenesis is proposed that is based as far as possible on a knowledge of physiological, rather than anatomical, changes taking place during follicle development. The model isExpand
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Nutrient effects on ovulation rate, ovarian function and the secretion of gonadotrophic and metabolic hormones in sheep.
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A mixture of the branched chain amino acids leucine, isoleucine and valine increases ovulation rate in ewes when infused during the late luteal phase of the oestrous cycle: an effect that may be
The positive relationship between nutritional state and ovulation rate in sheep may involve the action of specific nutrients on gonadotrophin release. LH and FSH secretion is controlled in part byExpand
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Ovulation rate and the concentrations of gonadotrophins and metabolic hormones in ewes infused with glucose during the late luteal phase of the oestrous cycle.
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 givenExpand
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Fear and coping styles of outdoor-preferring, moderate-outdoor and indoor-preferring free-range laying hens
Abstract Free-range systems are increasing in popularity as outdoor access is perceived to improve hen welfare, but radio-frequency identification tracking of individuals shows not all hens accessExpand
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Successful low dose insemination of flow cytometrically sorted ram spermatozoa in sheep.
Contents The fertility of ram spermatozoa that had undergone flow cytometric sorting (MoFlo® SX) and cryopreservation was assessed after low-dose insemination of synchronized Merino ewes. Oestrus wasExpand
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Feeding sorghum ergot (Claviceps africana) to sows before farrowing inhibits milk production.
OBJECTIVE To assess the impact of feeding different amounts of sorghum ergot to sows before farrowing. DESIGN Fifty-one pregnant sows from a continually farrowing piggery were sequentially inductedExpand
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Control of fertility and fecundity of sheep by means of hormonal manipulation.
The results of four experiments are presented in summary form. The data are considered in relationship to the improvement of the fecundity and fertility of the Australian ewe breeding flock. In theExpand
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