نتایج جستجو برای: effective factors on fertility

تعداد نتایج: 9146116  

A. Rahim A. Singh B.A. Ganaie N. Shah R. Sinha S.A. Lone,

Bull fertility may be defined as the process by which spermatozoa fertilize and activate the ovum and then support embryonic development. Bull fertility is a complex trait having relatively low heritability and plays a vital role for efficient production and reproduction of bovine. Various mechanisms involved in regulating bull fertility associated phenotype and reliable biomarkers are poorly d...

Changes infertility ratesasone of the factors affecting the demographic changes and its rolein the labor supply and there fore economic growth, as an important element ofsocio-economic development of every country is considered. So that the importance of demographic changes in each country in recent years has increased resulting aging population in general and specifically decreased fertility t...

Journal: :American Journal of Public Health and the Nations Health 1941

Journal: :Population and Economics 2020

2006
J. C. Dalton S. Nadir M. Noftsinger J. Bame R. G. Saacke

Artificial insemination (AI) is an efficient and cost-effective strategy to improve the genetics and reproductive performance of a herd. Reputable commercial AI stud and custom semen collection businesses, through stringent collection, processing and quality control, provide a highly fertile product to their customers. When semen is purchased and transferred to the producer’s liquid nitrogen re...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علامه طباطبایی - دانشکده ادبیات و زبانهای خارجی 1389

within the components of communicative competence, a special emphasis is put on the “rules of politeness,” specifically the politeness strategies (brown and levinson, 1978) that speakers deploy when performing the request speech act. this is because the degree of imposition that making a request places upon one’s interlocutor(s) has been seen to be influenced by several factors among which, as ...

Journal: :Human reproduction 2008
Laura Bunting Jacky Boivin

BACKGROUND Previous research has highlighted a lack of fertility awareness in the general population especially in relation to the optimal fertile period during the menstrual cycle, incidence of infertility and duration of the reproductive life span. The current study assessed fertility knowledge more broadly in young people and investigated three areas of knowledge, namely risk factors associa...

2004
Filippo Miglior

Introduction Fertility is a very complex trait, difficult to define, to record and to evaluate all the factors that influence fertility. Fertility is strongly influenced by environmental effects and in part by genetics, the male for fertilization and the female for conception. In general, the fertility trait is hereditary but only to a small degree. There does however exist sufficient genetic v...

Background & aim: Healthcare areas, especially fertility care (commonly accompanied with high emotions, as well as long-term and recurring treatment periods) could exclusively benefit from patient-centered care (PCC). Despite evident advantages of PCC, this approach has not been practiced as a routine procedure in current clinical environments yet, even in western developed countries. Therefore...

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