نتایج جستجو برای: animal population

تعداد نتایج: 886109  

1999
LOUIS OLLIVIER

This paper presents an overview of the history and the foreseeable developments of animal breeding. After the transition from population genetics to modern quantitative genetics, realized in the late 1950s, major progress has occurred in the field of breeding value evaluation and, more recently, with the advent of genomics and its potential contribution to genetic improvement. Various challenge...

2018
Hang Pan Narayan Paudyal Xiaoliang Li Weihuan Fang Min Yue

Characterization of transmission routes of Salmonella among various food-animal reservoirs and their antibiogram is crucial for appropriate intervention and medical treatment. Here, we analyzed 3728 Salmonella enterica serovar Newport (S. Newport) isolates collected from various food-animals, retail meats and humans in the United States between 1996 and 2015, based on their minimum inhibitory c...

Journal: :تحقیقات دامپزشکی 0
جهانگیر کبوتری گروه علوم پایه، دانشکده دامپزشکی و پژوهشکده بیماریهای مشترک انسان و دام، دانشگاه شهرکرد، شهر کرد- ایران حمید شریفی 1) مرکز تحقیقات مدلسازی در سلامت، پژوهشکده آینده پژوهی در سلامت، دانشگاه علوم پزشکی کرمان، کرمان- ایران/2) گروه بهداشت و مواد غذایی، دانشکده دامپزشکی، دانشگاه شهید باهنر کرمان، کرمان- ایران افسانه یوسف زاده دانش ‏آموخته دانشکده دامپزشکی، دانشگاه شهید باهنر کرمان، کرمان- ایران خوبیار مشایخی کارشناس، اداره کل دامپزشکی جنوب کرمان، کرمان- ایران مطهره خوشکام کارشناس، اداره کل دامپزشکی جنوب کرمان، کرمان- ایران نرجس افشاری پور کارشناس، اداره کل دامپزشکی جنوب کرمان، کرمان- ایران

background: brucellosis is one of the most important zoonosis that is prevalent among human and animal. today, a large percentage of animal and human population suffer from its side effects. objectives: the purpose of the present study was to estimate the prevalence of anti-brucella antibodies in flock- and animal-level in districts of south of kerman province. methods: in this cross-sectional ...

A. Mahforuzi Azam Afshar Naderi Farhang Khademi Nadooshan Seyyed Baha Hosseini,

Human and animal skeletal remains can provide information about the food chain of inhabitant’s nutrition of archaeologicalsites. The food chain which at it minerals and organic materials transferred from soil to the plants, from plants to theanimals, and from herbivores animals to the carnivores, is the benchmark system in ancient diet. Although Chemicalinteractions between soils, animal and hu...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه ارومیه - دانشکده کشاورزی 1393

چکیده کنه تارتن دو لکه ای tetranychus urticae koch یکی از چندخوارترین آفات شناخته شده محصولات کشاورزی دنیا به حساب می آید. در این بررسی جمعیت تخم و مراحل فعال این کنه در شرایط آلودگی طبیعی و مصنوعی در برگ های 8 رقم لوبیا در سال 1392 در گلخانه و مزرعه تحقیقاتی دانشکده کشاورزی دانشگاه ارومیه موردمطالعه قرار گرفت. آزمایش به صورت طرح کاملاً تصادفی برای شرایط مزرعه در10 تکرار و برای شرایط گلخانه ای...

Journal: :Revue scientifique et technique 1997
V Kouba

A computerised set of methods for the risk assessment of infectious diseases has been developed as part of a software package which deals with animal population health and disease analyses and programming (EPIZOO, version 2.6). This set includes methods for calculating the following: general indicators of risk of animal disease. Risk probability assessment of propagation of disease. Risk probab...

2017
Fabian Zimmermann Christian Jørgensen

Harvesting of living resources involves conflicting objectives between profits, human consumption, population sustainability and ecological impacts. These trade-offs are often complex, as harvesting affects demography and productivity of wild populations immersed in rich ecological interactions, and consequences may extend to the evolutionary dimension. In a life-history model of a commercially...

2014
Michelle K Morters Trevelyan J McKinley Olivier Restif Andrew J K Conlan Sarah Cleaveland Katie Hampson Helen R Whay I Made Damriyasa James L N Wood

1. Understanding the demography of domestic dog populations is essential for effective disease control, particularly of canine-mediated rabies. Demographic data are also needed to plan effective population management. However, no study has comprehensively evaluated the contribution of demographic processes (i.e. births, deaths and movement) to variations in dog population size or density, or de...

Journal: :Ecology 2013
A W Bateman A Ozgul J F Nielsen T Coulson T H Clutton-Brock

Population dynamics in group-living species can be strongly affected both by features of sociality per se and by resultant population structure. To develop a mechanistic understanding of population dynamics in highly social species we need to investigate how processes within groups, processes linking groups, and external drivers act and interact to produce observed patterns. We model social gro...

2017

When cells?but not DNA?from two or more genetically distinct individuals combine to form a new individual, the result is called a chimera. Though chimeras [2] occasionally occur in nature, scientists have produced chimeras [2] in a laboratory setting since the 1960s. During the creation of a chimera, the DNA molecules do not exchange genetic material (recombine), unlike in sexual reproduction o...

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