نتایج جستجو برای: grandparent breeder

تعداد نتایج: 4097  

Journal: :Poultry science 1999
D L Pollock

Recent trends occurring in broiler primary breeding companies are described. The structure and operation of broiler primary breeder companies are described from pedigree elite populations, through great-grandparent and grandparent generations, down to the parent stock. The relatively low value of fertility and hatchability, compared with yield and feed efficiency as selection traits, is assesse...

Journal: :تحقیقات دامپزشکی 0
رامین اکبریان دانشکده دامپزشکی سید مصطفی پیغمبری دانشکده دامپزشکی عباس برین دانشکده دامپزشکی

salmonella enteritidis (se) is frequently isolated from poultry and humans. chicken meat and egg are two important sources of se infection for humans. this study was conducted to detect the se infection in iranian poultry farms using serological methods. a number of 8208 serum samples were provided from 171 poultry flocks (pullet, commercial layer, broiler breeder, layer breeder, grandparent br...

A. Mohammadi, H. Dadras M. Rajabzadeh

The subgroup J of ALV (ALV-J) has emerged as an important pathogen of meat-type chickens since1989. This virus is responsible for economic losses due to both mortality and depressed performance inchickens. So, the objective of this study is the detection of ALV-J in the albumen of commercial and nativefowl eggs using RT-PCR. Three hundred and seventy egg albumens were randomly selected from dif...

Journal: :iranian journal of veterinary research 2011
m. rajabzadeh h. dadras a. mohammadi

the subgroup j of alv (alv-j) has emerged as an important pathogen of meat-type chickens since1989. this virus is responsible for economic losses due to both mortality and depressed performance inchickens. so, the objective of this study is the detection of alv-j in the albumen of commercial and nativefowl eggs using rt-pcr. three hundred and seventy egg albumens were randomly selected from dif...

Journal: :OENO One 2021

Italy is one of the richest countries in terms grapevine varietal assortment, and Marche region central has an ancient winegrowing tradition. Increasing interest autochthonous varieties prompted efforts to recover identify local minor germplasm also this region, search for pedigree relationships determine evolution assortment. In present study was done using nuclear chloroplast microsatellite m...

Journal: :Archives of psychiatric nursing 2006
Lenora R Campbell Jie Hu Sylvia Oberle

This study examined risk factors for reoffending by youth in grandparent-headed homes and those in parent-headed homes. Using data abstracted from the juvenile justice records of youth in a variety of living arrangements, we compared the records of 29 youth living in grandparent-headed homes with those of 37 youth living in parent-headed homes. Youth in grandparent-headed homes were significant...

Journal: :The journals of gerontology. Series B, Psychological sciences and social sciences 2004
Donald C Reitzes Elizabeth J Mutran

OBJECTIVE A new grandparent identity measure is constructed that allows us to compare grandparent identity meanings with the meanings of other adult identities and to investigate the relationships between identities and well-being. METHODS Data were collected in 1997 from 203 older grandmothers and grandfathers living in a metropolitan area. Grandparent and parent identity meanings are measur...

2016
Ling Xu Iris Chi

Background: Caregiving for grandchildren has effect on the physical health of older adults. Physical well-being may also affect the daily activities of grandparent caregivers. Therefore, there may be a reciprocal effect between grandparent caregiving and health. However, few studies have tested this dynamic relationship. This study examined how grandparent caregiving and self-rated health (SRH)...

2007
erard E. Bruder Craig E. Tenke Myrna M. Weissman

esults: Grandchildren with both depressed parent and grandparent showed greater alpha asymmetry, with relatively less right than left emisphere activity, when compared with those with neither depressed parent nor grandparent. This difference was present over the arietal region in the eyes-closed condition. Grandchildren having either depressed parent or grandparent also tended to show heightene...

Journal: :Open Agriculture 2021

Abstract Livestock sub-sector of agriculture plays a vital role in the development emerging economies terms provision high quality protein and employment generation through its value chain activities. Yet, little is known about this important Nigeria economy. Hence, study assessed Broiler Value Chain (BVC) Nigeria. Primary data were collected from various actors along between November 2017 Marc...

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