Abstract Search

0 shares

bp0019cpr28 | Reproductive Biotechnology | CPR2013

Porcine pluripotent stem cells and their differentiation

In some situations, the pig has advantages over the mouse as a model in biomedical research. The availability of pluripotent cell lines is likely to broaden this appeal. Here we review progress in the derivation and characterization of embryonic stem cells (ESC) and induced pluripotent lines (iPSC) from pigs. Until recently, most porcine ESC failed to meet the full criteria for pluripotency, but that may be changing as more becomes known about the culture conditions requ...

0 shares

bp0012cpr11 | Genetic Factors Influencing Prolificacy | CPR1985

Influencing prolificacy of sows by selection for physiological factors

Johnson R. K. , Zimmerman R. K. , Lamberson W. R. , Sasaki† S.

0 shares

bp0016cpr20 | New Technologies | CPR2001

Applying functional genomics research to the study of pig reproduction

Pomp D. , Caetano A. R. , Bertani A. R. , Gladney C. D. , Johnson R. K.

Functional genomics is an experimental approach that incorporates genomewide or system-wide experimentation, expanding the scope of biological investigation from studying single genes to studying potentially all genes at once in a systematic manner. This technology is highly appealing because of its high throughput and relatively low cost. Furthermore, analysis of gene expression using microarrays is likely to be more biologically relevant than the conventional paradigm ...

0 shares

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...

1 shares

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...

0 shares

bp0009rdr1 | (1) | REDR1986

Control of GnRH secretion

Clarke I. J.

0 shares

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 ...

0 shares

bp0013cpr5 | Nutrition-Metabolism-Reproduction Interactions | CPR1989