نتایج جستجو برای: cattle breeds

تعداد نتایج: 57202  

2015
Imtiaz A. S. Randhawa Mehar S. Khatkar Peter C. Thomson Herman W. Raadsma

Understanding the evolution and molecular architecture of complex traits is important in domestic animals. Due to phenotypic selection, genomic regions develop unique patterns of genetic diversity called signatures of selection, which are challenging to detect, especially for complex polygenic traits. In this study, we applied the composite selection signals (CSS) method to investigate evidence...

Journal: :Animal genetics 2000
A Lagziel S DeNise O Hanotte S Dhara V Glazko A Broadhead R Davoli V Russo M Soller

Information is presented on the frequency of the Msp I (-) allele in the third intron of the bovine growth hormone gene in a large number of cattle breeds. Consideration of the breed frequencies in relation to their geographic origin shows a low frequency for breeds originating in Northern Europe, moderate frequencies for breeds originating in Eastern Europe or the countries surrounding the Med...

Journal: :Veterinary research 2003
Christian Ducrot Pascal Roy Eric Morignat Thierry Baron Didier Calavas

Until recently, epidemiological studies on Bovine Spongiform Encephalopathy (BSE) were based on Mandatory Reporting Systems (MRS) of clinically suspect bovines only, but rapid diagnostic tests were validated in 1999 and are used for targeted surveillance in Switzerland, France and other countries, as a complementary and secondary tool. Data on 30491 cattle issued from a French pilot program tar...

Journal: :Journal of Dairy Science 2021

The identification of functional genetic variants and associated candidate genes linked to feed efficiency may help improve selection for in dairy cattle, providing economic environmental benefits the industry. This study used RNA-sequencing data obtained from liver tissue 9 Holstein cows [n = 5 low residual intake (RFI), n 4 high RFI] 10 Jersey (n RFI, RFI), which were selected a single popula...

Journal: :Genome research 1997
R Kambadur M Sharma T P Smith J J Bass

A visibly distinct muscular hypertrophy (mh), commonly known as double muscling, occurs with high frequency in the Belgian Blue and Piedmontese cattle breeds. The autosomal recessive mh locus causing double-muscling condition in these cattle maps to bovine chromosome 2 within the same interval as myostatin, a member of the TGF-beta superfamily of genes. Because targeted disruption of myostatin ...

2015
Marianna Niemi Auli Bläuer Terhi Iso-Touru Janne Harjula Veronica Nyström Edmark Eve Rannamäe Lembi Lõugas Antti Sajantila Kerstin Lidén Jussi-Pekka Taavitsainen Yong-Gang Yao

BACKGROUND Ancient DNA analysis offers a way to detect changes in populations over time. To date, most studies of ancient cattle have focused on their domestication in prehistory, while only a limited number of studies have analysed later periods. Conversely, the genetic structure of modern cattle populations is well known given the undertaking of several molecular and population genetic studie...

Journal: :International Archives of Occupational and Environmental Health 2009
Astrid R. R. Heutelbeck Carsten Junghans Hermann Esselmann Ernst Hallier Thomas G. Schulz

INTRODUCTION Cattle are an important source of allergens in the working area of farmers. Asthma caused by cow allergens is a significant occupational problem. Yet in allergological testing, the results of in vivo and in vitro diagnostic tests are often inconsistent even in cases with clearly cattle-related symptoms. OBJECTIVES AND METHODS The aim of this study was to investigate four differen...

2011
Ceiridwen J. Edwards Catarina Ginja Juha Kantanen Lucía Pérez-Pardal Anne Tresset Frauke Stock Luis T. Gama M. Cecilia T. Penedo Daniel G. Bradley Johannes A. Lenstra Isaäc J. Nijman

BACKGROUND Diversity patterns of livestock species are informative to the history of agriculture and indicate uniqueness of breeds as relevant for conservation. So far, most studies on cattle have focused on mitochondrial and autosomal DNA variation. Previous studies of Y-chromosomal variation, with limited breed panels, identified two Bos taurus (taurine) haplogroups (Y1 and Y2; both composed ...

Journal: :Animal : an international journal of animal bioscience 2010
D M Vankan D R Waine M R S Fortes

This research developed two real-time PCR assays, employing high-resolution melt and allele-specific analysis to accurately genotype the F94L mutation in cattle. This mutation (g.433C > A) in the growth differentiation factor 8 or myostatin gene has recently been shown to be functionally associated with increased muscle mass and carcass yield in cattle. The F94L mutation is not, like other myos...

2017
Sumit Kumar Deepak Sharma Satyendra Pal Singh Madhu Tiwari Rakesh Goel Sanjeev Kumar Singh Vijay Pandey

Prolactin (PRL) gene is an important lactogenic candidate gene, plays a crucial role in mammary gland development and in the initiation, maintenance of lactation and expression of milk protein genes. In the present study, characterization of PRL 5′ upstream region and investigation of status of intron 1 polymorphism was carried out in Indian cattle breeds. An 857 bp fragment of 5′ upstream regi...

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