نتایج جستجو برای: respectively minimum inbreeding coefficient was zero

تعداد نتایج: 4352646  

Journal: :Molecular ecology 2009
María José Ruiz-López Eduardo R S Roldán Gerardo Espeso Montserrat Gomendio

Relationships between pedigree coefficients of inbreeding and molecular metrics are generally weak, suggesting that measures of heterozygosity estimated using microsatellites may be poor surrogates of genome-wide inbreeding. We compare three endangered species of gazelles (Gazella) with different degrees of threat in their natural habitats, for which captive breeding programmes exist. For G. do...

Journal: :Journal of dairy science 1995
F Miglior E B Burnside B W Kennedy

Additive, dominance, and additive by additive components of genetic variance and inbreeding depression were estimated for production traits from a group of daughters of young sires from the Canadian Holstein population. First lactations of 92,838 cows were analyzed. Three sire and dam models (additive, additive plus dominance, additive plus dominance plus additive by additive genetic effects), ...

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...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه بیرجند - دانشکده کشاورزی 1390

abstract this study is carried out to determine the chemical composition in the three vegetative stages of the haloxylon sp., degradation parameters, with adding naoh and ca(oh2 ). for this purpose, in may and october and january 2010 enough some haloxylon sp. of the ammary area was prepared. crude protein and ash percentage are decrease, neutral detergent fiber percentage with pragress stage ...

Journal: :Proceedings. Biological sciences 2003
Jane M Reid Peter Arcese Lukas F Keller

A thorough knowledge of relationships between host genotype and immunity to parasitic infection is required to understand parasite-mediated mechanisms of genetic and population change. It has been suggested that immunity may decline with inbreeding. However, the relationship between inbreeding level and a host's response to a novel immune challenge has not been investigated in a natural populat...

Inbreeding depression is a harmful phenomenon in livestock which is outcome of inbreeding. Inbreeding is consequence mating between two individuals who are more related to each other than average relatedness in population, which results in reducing in fitness of progenies and genetic variability in populations. Development of high-density genome-wide single nucleotide polymorphism (SNP) array f...

2007
C. Asa P. Miller M. Agnew J. A. R. Rebolledo S. L. Lindsey M. Callahan K. Bauman

The ultimate goal of the Mexican gray wolf Canis lupus baileyi captive management program is reintroduction of healthy individuals into wild habitats. To this end, zoo population managers work to provide not only for the physical well-being but also for the genetic health of these animals. However, the very limited genetic founder base, exacerbated by breeding within three distinct lineages, re...

Journal: :Tarim Bilimleri Dergisi-journal of Agricultural Sciences 2021

Inbreeding is generally associated with a reduction in production and profitability. Therefore, it essential that be monitored kept under control. The purpose of this study was to calculate the inbreeding coefficient for Holstein Friesian cattle registered database Cattle Breeders' Association Turkey (TDSYMB). TDSYMB comprised two elements: (i) pre-herdbook (ii) herdbook, including information ...

Journal: :The Journal of heredity 2011
Joaquim Casellas Dolors Vidal-Roqueta Eva Flores Dolors Casellas-Vidal Marçal Llach-Vila Roser Salgas-Fina Pere Casellas-Molas

Inbreeding depression is a topic of main interest in experimental and domestic species, although previous studies simplified this genetically complex effect to the linear (or quadratic) regression coefficient linked to the inbreeding coefficient of each individual or, in more recent studies, to founder-specific inbreeding coefficients. Going beyond generalizing to these traditional scenarios, o...

Journal: :Biology letters 2014
Ivar Herfindal Hallvard Haanes Knut H Røed Erling J Solberg Stine S Markussen Morten Heim Bernt-Erik Sæther

Mechanisms reducing inbreeding are thought to have evolved owing to fitness costs of breeding with close relatives. In small and isolated populations, or populations with skewed age- or sex distributions, mate choice becomes limited, and inbreeding avoidance mechanisms ineffective. We used a unique individual-based dataset on moose from a small island in Norway to assess whether inbreeding avoi...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید