Bioscientifica Proceedings

Contents

• Reproduction in Domestic Ruminants III
• • Maternal-Embryo Interactions
  • • Editorial: Reproduction in Domestic Ruminants

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    • Oviduct proteins in fertilization and early embryo development

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    • Maternal recognition of pregnancy

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    • Matrix metalloproteinases and their tissue inhibitors at the ovine trophoblast-uterine interface

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    • Cellular interactions during implantation in domestic ruminants

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    • The oxytocin receptor, luteolysis and the maintenance of pregnancy

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    • Interactions between the immune system and the ruminant conceptus

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    • The growth hormone/prolactin gene family in ruminant placentae

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    • Structural and functional properties of the corpus luteum of pregnancy

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  • Development of the Reproductive Axis
  • • The search for the Booroola (FecB) mutation

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    • Development of the sheep ovary during fetal and early neonatal life and the effect of fecundity genes

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    • Melatonin and the development of circadian and seasonal rhythmicity

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    • Ontogeny of GnRH systems

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    • Role of GnRH in the ontogeny and regulation of the fetal hypothalamo-pituitary-gonadal axis in sheep

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    • Inhibin and activin in embryonic and fetal development in ruminants

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    • Development of the gonadotrophic and somatotrophic axes of sheep

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  • Regulation of Gonadotrophin Secretion
  • • Distribution of neurotransmitters in the sheep brain

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    • Gamma amino-butyric acid and the control of GnRH secretion in sheep

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    • Electrophysiological approach to the hypothalamic GnRH pulse generator

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    • The preovulatory gonadotrophin-releasing hormone surge: a neuroendocrine signal for ovulation

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    • Molecular biology of gonadotrophins

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    • Neurochemical identity of neurones expressing oestrogen and androgen receptors in sheep hypothalamus

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    • Dopaminergic control of LH secretion by the Al5 nucleus in anoestrous ewes

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    • Negative feedback regulation of the secretion and actions of GnRH in male ruminants

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  • Regulation of Gonadal Function
  • • Investigating local regulation of the testes of ruminants

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    • Growth factors and the control of folliculogenesis

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    • Control of antral follicle development and selection in sheep and cattle

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    • Immunological manipulation of ovulation rate for twinning in cattle

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    • Involvement of immune cells in regulation of ovarian function

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    • Dynamics of molecular mechanisms underlying ovarian oxytocin secretion

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  • Environmental and Metabolic Interactions
  • • Endocrine basis for puberty in heifers and ewes

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    • Involvement of thyroid hormones in seasonal reproduction

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    • Melatonin binding sites and their role in seasonal reproduction

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    • Nutritional influences on reproduction in mature male sheep and goats

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    • Stress and reproduction in farm animals

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    • Sensory and behavioural control of gonadotrophin secretion during suckling-mediated anovulation in cows

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    • Physiological effects of undernutrition on postpartum anoestrus in cows

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    • Factors that affect fertility during oestrous cycles with short or normal luteal phases in postpartum cows

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  • Short Communications
  • • Plasma concentrations of dimeric inhibin and oestradiol in heifers undergoing superovulation with eCG or FSH

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    • Generation of monoclonal antibody to ovine FSH and its application in immunoneutralization and enzymeiminunoassay

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    • Identification and localization of collagen types I and IV in the ruminant follicle and corpus luteum

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    • Pulsatile hormone secretion during the first ovarian follicular wave in Bos indicus heifers

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    • Effects of gonadotrophin concentration on hormone production by theca interna and granulosa cells from bovine preovulatory follicles

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    • Effect of suppression of pituitary-testicular function during fetal life with a GnRH agonist on reproductive development in ram lambs during the first 28 weeks of life

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    • Evidence for dopamine D1 receptor-mediated stimulation of prolactin secretion in ewes under long daylength

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    • The ovarian follicular wave pattern in the mated and non-mated dromedary camel (Camelus dromedarius)

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    • Electrofusion of in vitro produced bovine embryonic cells for the production of isofusion contours for cells used in nuclear transfer

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    • Prostaglandins and the maintenance of pregnancy in goats

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    • A dual role for progesterone in the control of cyclicity in ruminants

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