Abstract Search

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bp0009rdr4 | (1) | REDR1986

Regulation of the secretion of FSH in domestic ruminants

Findlay J. K. , Clarke I. J.

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bp0009rdr12 | (1) | REDR1986

In-vitro fertilization of ruminants

First N. L. , Parrish J. J.

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bp0013cpr20 | Early Pregnancy | CPR1989

Regulation of uterine and conceptus secretory activity in the pig

Simmen R. C. M. , Simment R. C. M. ,

Summary. Evidence is presented for the involvement of a number of specific uterineand conceptus-derived proteins in endometrial differentiation and conceptus or feml development. These secretory proteins include mitogens (insulin-like growth factor-I and -II, epidermal growth factor, uterine lumina] fluid mitogen). binding and transport proteins (uteroferrin, insulin-like growth factor and retinal binding proteins, respectively), protease inhibitors (anti...

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bp0009rdr20 | Male Function and Spermatogenesis | REDR1986

Detection of early pregnancy in domestic ruminants

Sasser R. G. , Ruder C. A.

Summary. Tests for the detection of pregnancy early after insemination have not yet reached their full potential. Currently, the milk progesterone assay provides the earliest possible test, at an interval of one oestrous cycle after insemination, i.e. 17, 21 and 21 days in sheep, goats and cows respectively. This assay is pregnancy non-specific and rate of detection of pregnant animals is acceptable but less than desirable.Detection of a...

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bp0008rdr1 | Phylogenetics | REDR2014

Ruminant phylogenetics: A reproductive biological perspective

Silvia William J.

Summary. Phylogenetics is the study of evolutionary relationships among species. Phylogenies are based on the comparison of large numbers of characteristics among species. Traditionally, the field of phylogenetics was dominated by paleontologists so the characteristics studied were structural, often skeletal. The field of phylogenetics was revolutionized in the 1980s as scientists began using molecular data, first amino acid, then nucleotide sequences. This le...

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bp0008rdr11 | Peri-implantation: Conceptus-uterine Interaction | REDR2014

Consequences of interactions between the maternal immune system and the preimplantation embryo in cattle

Hansen Peter J

Summary. Using the cow, three questions related to the importance of the maternal immune system for the developing embryo are addressed: role of semen-induced inflammation for pregnancy establishment, regulation of preimplantation development by molecules that function as soluble mediators of immune cells, and immunological aspects of embryonic signaling by interferon-τ. Unlike rodents, there is no indication that semen modifies the physiology of the moth...

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bp0009rdr1 | (1) | REDR1986

Control of GnRH secretion

Clarke I. J.

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bp0009rdr16 | (1) | REDR1986

Short light cycles induce persistent reproductive activity in Ile-de-France rams

Pelletier J. , Almeida G.

Summary. European breeds of rams appear to be responsive to photoperiodic changes even though there are large differences between breeds in the timing and amplitude of endocrine (LH and testosterone) and gametogenetic variations before the sexual season. Light regimens such as 6-month light cycles or alternations of constant short and long days every 12–16 weeks are able to entrain the parameters of sexual activity. In these regimens in which the period ...

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bp0013cpr5 | Nutrition-Metabolism-Reproduction Interactions | CPR1989