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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
Autor:
Margareta Wallgren, Jane M. Morrell, M. Sabés-Alsina, Y. Sjunesson, Nils Lundeheim, Manel Lopez-Bejar
Publikováno v:
Reproduction, Fertility and Development. 31:200
Previous research indicated that the season during which oocytes are harvested affects quality of in vitro-produced embryos (Gupta et al. 2016 Anim. Reprod. Sci. 164, 162). In our own studies, sperm kinematics, membrane integrity, acrosome status, mi
Publikováno v:
Reproduction, Fertility and Development. 30:209
A population of bulls with 1.7% 56-day non-return rate were found to share a 1386 kb segment of homozygosity (Pausch et al. 2014 PLoS Genet. 10, e1004044). That study identified a nonsense mutation in the transmembrane protein 95 (TMEM95)-encoding ge
Autor:
M. I. Hiriart, Daniel Felipe Salamone, N. Chavez Rabelo, L. S. Almeida Camargo, Romina J. Bevacqua, N. G. Canel
Publikováno v:
Reproduction, Fertility and Development. 27:248
Intracytoplasmic sperm injection (ICSI) mediated transgenesis is an effective tool for transgenic animal production. However, ICSI in cattle remains inefficient. In this work, we assayed approaches to improve egfp expressing blastocysts production by
Publikováno v:
Reproduction, Fertility and Development. 21:212
Intracytoplasmic sperm injection (ICSI) provides a possible remedy to produce high numbers of monospermic zygotes. However, the efficiency of ICSI in pigs is low, mainly due to a failure of oocyte activation and low incidence of sperm head decondensa
Publikováno v:
Reproduction, Fertility and Development. 18:164
The substantial decrease of sperm quality after cryopreservation remains an important issue in the artificial insemination industry. Sperm coating with Triladyl® (Minitübe, Tiefenbach, Germany) during ejaculation can preserve sperm characteristics
Autor:
E. Crichton, J. Schenk
Publikováno v:
Reproduction, Fertility and Development. 18:282
Preparation of media for use in processing sorted sperm is laborious and expensive. The objective was to determine whether pregnancy rates in heifers following AI of frozen/thawed X chromosome-bearing sperm were equivalent for sperm processed for cry
Publikováno v:
Reproduction, Fertility and Development. 17:306
Statistically significant correlations between laboratory assays of sperm quality and fertility require large sample populations. Experimental differences can be assessed accurately using limited observations with competitive fertilization and fetal
Publikováno v:
Reproduction, Fertility and Development. 17:269
Low developmental rates after IVF with some AI bulls are one of the most frequent problems encountered with in vitro production of bovine embryos. In this study, two groups of high and low in vitro fertility bulls (3 bulls per group) were selected ba
Autor:
Hiroshi Nagashima, Yoshihiro Hirose, S. Takeiri, N. Shimozawa, Katsuro Inoue, Hironori Okada, N. Ogonuki, Tadashi Sankai, Atsuo Ogura, Hiromi Miki
Publikováno v:
Reproduction, Fertility and Development. 17:312
Microinsemination is a technique that delivers male germ cells directly into the ooplasm. The efficiency of fertilization and subsequent embryo development after microinsemination varies with species and the male germ cells used. This study examined