نتایج جستجو برای: inbred population

تعداد نتایج: 720142  

     The aim of the current study was to assessing the effect of inbreeding on growth-related traits including birth weight (BW), weaning weight (WW) and average daily gain (ADG) as well as efficiency-related traits such as Kleiber ratio (KR) and relative growth rate (RGR) of Moghani sheep. To this end, after editing data and preparing pedigree file, coefficients of inbreeding were estimated an...

Journal: :پژوهش های علوم دامی ایران 0
مرتضی بیطرف ثانی محمدرضا نصیری علی اصغر اسلمی نِژاد محمد مهدی شریعتی

introduction: domestic animals are invaluable resources to study the molecular architecture of complex traits. although the mapping of quantitative trait loci (qtl) underlying economically important traits in domestic animals has achieved remarkable results in recent decades, not all of the genetic variation in the complex traits has been captured due to the low density of markers used in qtl m...

Journal: :iranian journal of applied animal science 2015
s. naghshineh s.a. rafat g.a. moghaddam m. ebrahimi j. shodja

pedigree information of 3972 holstein cows and bulls, from 1961 to 2008, was used to calculate inbreeding coefficients and their effects on production traits and subclinical mastitis of dairy farm cows inazerbaijan province,iran. inbreeding was included in a linear mixed model as a class variable. data were analyzed using the proc mixed of sas by mivque method. results showed that average inbre...

Journal: :genetics in the 3rd millennium 0
azin najd ejlali yousef mehmannavaz

the objective of the present study was to evaluate the genetic structure and diversity of 16 generations of native fowls of west azerbaijan province, iran using the pedigree data collected between 1994 and 2012. inbreeding coefficient (f), pedigree completeness index (pci), parameters of the probability of gene origin and other parameters related to the genetic structure were estimated using th...

S. Savar-Sofla S. Varkoohi, Z. Patiabadi

The aim of this study was to estimate amount of inbreeding coefficient in Shal sheep and its impact on growth performance. Pedigree information and body weight at different ages (birth weight, 3 month weight, 6 month weight, 9 month weight and 12 month weight) were used from 6692 lambs from 90 rams and 1007 ewes. Data were collected on Ghazvin sheep breeding station during 1997-2013. Estimation...

G.A. Moghaddam J. Shodja M. Ebrahimi S. Naghshineh S.A. Rafat,

Pedigree information of 3972 Holstein cows and bulls, from 1961 to 2008, was used to calculate inbreeding coefficients and their effects on production traits and subclinical mastitis of dairy farm cows inAzerbaijan province,Iran. Inbreeding was included in a linear mixed model as a class variable. Data were analyzed using the PROC MIXED of SAS by MIVQUE method. Results showed that average inbre...

Journal: :Journal of nematology 1998
L Zhang R A Dean H T Knap S A Lewis

A field population of Heterodera glycines was inbred by a combination of controlled male-female matings and inoculation of soybean with second-stage juveniles (J2) from single cysts. The initial and four F inbred populations were subjected to random amplified polymorphic DNA analysis and were also tested for their ability to reproduce on race differentials. The RAPD patterns of the inbred popul...

Journal: :تولیدات دامی 0
قاسم متقی‏ نیا کارشناس ارشد گروه کشاورزی، دانشگاه پیام نور خراسان جنوبی، بیرجندـ ایران همایون فرهنگ فر استاد گروه علوم دامی، دانشکدۀ کشاورزی، دانشگاه بیرجند، بیرجندـ ایران محسن احمدی شاهرخت کارشناس ارشد گروه کشاورزی، دانشگاه پیام نور خراسان جنوبی، بیرجندـ ایران عبدالاحد شادپرور دانشیار گروه علوم دامی، دانشکدۀ کشاورزی، دانشگاه گیلان، رشت ـ ایران مجید جعفری کارشناس ایستگاه اصلاح نژاد عباس ‏آباد، سازمان جهاد کشاورزی خراسان رضوی، مشهدـ ایران

effects of lamb and parents coefficient of inbreeding (ci) on wool weight were studied using 10,868 wool records belonging to 3,244 iran black lambs (1,633 males and 1,611 females) representing 96 rams and 995 ewes collected during 1983-2006 from animal breeding station of abbas abad. year and month of shearing, ci of lamb and dam, sex and birth type had significant affect on wool weight among ...

2016
Mikael Åkesson Olof Liberg Håkan Sand Petter Wabakken Staffan Bensch Øystein Flagstad

Natural populations are becoming increasingly fragmented which is expected to affect their viability due to inbreeding depression, reduced genetic diversity and increased sensitivity to demographic and environmental stochasticity. In small and highly inbred populations, the introduction of only a few immigrants may increase vital rates significantly. However, very few studies have quantified th...

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