نتایج جستجو برای: fertility potential

تعداد نتایج: 1111289  

2007
W. W. Thatcher T. R. Bilby A. Guzeloglu C. R. Staples

In ruminants, regression of the CL is due to a positive feedback loop between endometrial prostaglandin (PG) F2α (PGF2α) and luteal oxytocin secretion (Flint et al. 1992). The common factor associated with luteolysis in cattle and sheep appears to be an increase in endometrial sensitivity to oxytocin due to presence of oxytocin receptor (OTR) that may lead to initiation of luteolysis (McCracken...

2017
Ashok Agarwal Chak-Lam Cho Ahmad Majzoub Sandro C. Esteves

Journal: :Poultry science 2003
S McGary I Estevez M R Bakst

Genetic selection in primary broiler breeders may modify skeletal structure, possibly impeding semen transfer, and could alter the size and degree of fluctuating asymmetry (FA) of bilateral traits associated with fertility. Hence, we hypothesized specific morphometric traits could predict differential fertility. Sixty primary broiler breeder males from Strains A and B (n = 30/strain) were indiv...

Journal: :Pharmacological research 2011
Francesco Visioli Tory M Hagen

The use of antioxidants is now often used as a pharmacological adjunct to limit infertility. Indeed, the lay public rightly perceives oxidative stress and, thus, antioxidant treatment as important modulators of infertility. While the direct effects of antioxidant treatment on the quality of semen and oocytes are still under investigation, a significant body of evidence points to loss of vascula...

2001
S. McGary I. Estevez M. R. Bakst R. H. McGovern J. L. Wilson F. E. Robinson L. F. Bouvier

Genetic selection for high yield in primary broiler breeder males may result in skeletal modifications that impede sperm transfer upon mating. In addition, fluctuating asymmetry (FA) in bilateral traits has been shown to reliably indicate male reproductive potential in some avian species. The goal of this study was to determine if physical variation due to genetic selection and FA could explain...

2006
Carleton S. White Rosemary L. Pendleton Burton K. Pendleton

Prescribed fire was used in two semiarid grasslands to reduce shrub cover, promote grass production, and reduce erosional loss that represents a potential non–point-source of sediment to degrade water quality. This study measured transported soil sediment, dynamics in soil surface microtopography, cover of the woody shrub, grass, and bare ground cover classes, and soil fertility measured by nit...

Journal: :Human reproduction update 2001
A Lass F Akagbosu P Brinsden

In recent years, the survival of young males suffering from cancer has been improved. Development of new techniques such as IVF and intracytoplasmic sperm injection enables even low quality spermatozoa to be used successfully. It is possible therefore to preserve fertility potential of cancer patients before embarking on adjuvant chemotherapy and radiotherapy. Recognizing the importance of prot...

Journal: :Indian journal of physiology and pharmacology 2014
Amit Kant Singh Shalini Tomarz Ajay R Chaudhari Ramji Sinqh Narsingh Verma

OBJECTIVE Diabetes is a syndrome that affects all the physiological systems of the body, therefore this study was undertaken to compare the seminogram parameters in diabetics and non-diabetics. STUDY DESIGN The study was carried out at Male Infertility and Reproductive Physiology unit in the Department of Physiology, MGIMS, Sevagram, Wardha. 25 normozoospermic subjects with type 2 diabetes an...

2017
Karin Hammarberg Maggie Kirkman Catharyn Stern Robert I McLachlan Debra Gook Luk Rombauts Beverley Vollenhoven Jane R W Fisher

BACKGROUND Cancer treatment can diminish fertility in women and men. The need for fertility preservation is growing as increasing numbers of people survive cancer. Cryostorage of reproductive material to preserve potential for conception for cancer survivors has moved from being experimental to being a part of clinical management of women and men who are diagnosed with cancer in their reproduct...

Journal: :Human reproduction 2011
D Stoop J Nekkebroeck P Devroey

BACKGROUND Although cryopreservation of semen is a routine procedure for preserving male gametes, an efficient method of preserving fertility through oocyte freezing has only recently become available for women. In view of the limited female reproductive lifespan, oocyte freezing can now offer women some protection against the decline in fertility with aging. METHODS A survey was performed in...

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