The in vitro maturation, fertilization, and morphological changes of goat cumulus–oocyte complexes (COCs) cryopreserved by ultrarapid freezing using DPBS + 0.5% sucrose + 0.4% BSA and 4 M, 6 M, 8 M, or 10 M concentrations of glycerol (G) or ethylene glycol (EG) were studied. COCs were cryopreserved by ultrarapid freezing by holding them over LN2 vapor for 2-3 min and then plunging them into LN2...

introduction: to evaluate the effect of electroactivation on fertilization and embryo development up to 8-cell stage, after intracytoplasmic injection of severely amorphous sperm. material and methods: oocytes (168) from 13 patients with severe- teratospermia undergoing icsi were divided into control (83) and electro activation (85) groups. in the latter group, oocytes were electrically activat...

to study effect of fe and zn spraying on some characteristics of mungbean, an experiment was designed as factorial based on randomized complete block with three replications in urmia university, 2012. treatments were nutrition systems (organic, chemical, integrated and no nutrition) and micronutrients (fe, zinc, no foliar application and water spraying). the plant height, pod length, number of ...

background: conventional ivf and icsi are two common techniques to achieve fertilization. ivf has long been used for treatment of infertility, although it is not an effective treatment in severe male infertility. the use of icsi has been expanded in severe male factor and fertilization failure after ivf cycle. in spite of the widespread use of icsi in patients with non-male factor infertility, ...

objective: this study aimed to evaluate the effect of seasonal variability on the assisted reproductive technique (art) success rate. materials and methods: this study was a descriptive – analytical survey performed on 91 infertile women undergoing  intracytoplasmic sperm injection – embryo transfer (icsi-et) in different seasons. the patients aged less than 35 years old and had normal lh/fsh r...

In cryopreservation of mammalian germ cells, unfertilized oocytes are one of the most available stages because these cryopreserved oocytes can be used for assisted reproductive technologies, including in vitro fertilization (IVF) and intracytoplasmic sperm injection. However, it has been generally reported that the fertility and developmental ability of the oocytes are reduced by cryopreservati...

The maturation of male fish is a problematic aspect Clarias macrocephalus and probably one the causes population’s disappearance in usual places where they once abound. present study aimed to explore feed additives enhance its from puberty. Vitamin E (VE) essential reproduction animals, including fish. A growth trial was conducted which groups C. were fed experimental diets containing graded le...