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pro vyhledávání: '"59"'
Autor:
H. Hayakawa, T.-I. Hirata
Publikováno v:
Reproduction, Fertility and Development. 23:238
Cell sorting is an important part of the sperm sexing process. The objective of this study was to compare the efficiency of in vitro embryo production using sexed frozen–thawed bull sperm sorted with 2 types of cell sorter. Ejaculates from 2 Bos ta
Publikováno v:
Reproduction, Fertility and Development. 17:173
It has been reported that a preincubation of the reconstructed oocytes prior to activation treatment might enhance the efficiency of nuclear reprogramming after somatic cell nuclear transfer in many species. The objectives of this study were to evalu
Autor:
Alessandra Martucciello, Angela Salzano, E. De Carlo, G. Bifulco, G. Zullo, G. Albero, V. Longobardi, Bianca Gasparrini
Publikováno v:
Reproduction, Fertility and Development. 26:185
The aim of this work was to evaluate the effect of repeated ovum pickup (OPU) on buffalo welfare. The OPU was carried out as previously described (Neglia et al. 2003 Theriogenology 59, 1123–1130) twice per week on 11 buffalo cows at 121 ± 15 days
Autor:
Charlotte E. Farin, J. E. Hicks
Publikováno v:
Reproduction, Fertility and Development. 21:221
When cumulus–oocyte complexes (COC) are cultured with follicle-stimulating hormone (FSH), germinal vesicle breakdown (GVBD) occurs and is transcriptionally dependent. In mice, expression of mRNA for nuclear receptor subfamily 4, member 1 (Nr4A1), a
Autor:
Teresa Encinas, Rosa M. Garcia-Garcia, P. Gonzalez-Añover, Julián Santiago-Moreno, M.J. Cocero, Antonio Gonzalez-Bulnes, Antonio López-Sebastián, Almudena Veiga-Lopez
Publikováno v:
Reproduction, Fertility and Development. 16:231
Embryo output in sheep is increased when superovulatory FSH treatments are started in the presence of a high number of small follicles (2–3mm in size) and in absence of large follicles (>6mm, Gonzalez-Bulnes et al., 2002. Theriogenology, 57, 1263
Autor:
J. Santiago Moreno, Rosa M. Garcia-Garcia, Alan S. McNeilly, Antonio López-Sebastián, Antonio Gonzalez-Bulnes, Carlos José Hoff de Souza
Publikováno v:
Reproduction, Fertility and Development. 16:231
In goats, as in other mammals, the use of treatment with GnRH antagonists (GnRHa) inhibits gonadotrophin secretion, causing a suppression of the growth of large ovarian follicles. Thus, GnRHa treatment could be useful to decrease the effects of domin
Publikováno v:
Reproduction, Fertility and Development. 16:284
The fertility of sexed frozen-thawed ram spermatozoa at low AI doses remains below commercially acceptable levels (Maxwell WMC et al. 2003 Theriogenology 59, 511 abst). The aim of the present study was to determine if the use of an artificial seminal
Autor:
Catherine Joly, P. Humblot, Bénédicte Grimard, Andrew Ponter, S. Freret, Christine Ficheux, N. Jeanguyot, Claire Ponsart
Publikováno v:
Reproduction, Fertility and Development. 16:254
This study aimed to investigate the hormonal and metabolic status of heifers subjected to short-term variation of energy intake and associated growth rate;; oocytes were collected by ovum pick-up (OPU) for in vitro embryo production. Experimental sch