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The Growing Problem of Heat Stress and the Possible Role for Genetic Strategies to Mitigate Its Effects
Scientists believe that, through genetic selection, genes can be used to improve heat tolerance in Hoslteins, although what still remains is the discovery into what impact heat tolerant genes will have on the economic performance of cattle, writes P J...
Refreshing A.I. Basics Well Worth The Effort
Stick to protocol to ensure effective insemination and make sure equipment is working correctly, urges Ryan Sterry, University of Wisconsin Agriculture Extension Agent. ...
Lactation Biology Symposium: Circadian Clocks as Mediators of the Homeorhetic Response to Lactation
Homeorhetic controls are based on time-dependent changes in metabolism to establish a new physiological state, such as pregnancy or lactation, according to researchers T.Casey and K Plaut who revealed their paper at on Circadian clocks at the Lactation...
Improving the Accuracy of Genomic Prediction of Milk Traits in the New Zealand Holstein Friesian Population
Altering a gene mutation that codes for milk traits such as fat yield has been investigated by M.Hayr, M. Saatchi, D. Johnson and D. Garrick and revealed at the mid-west American Dairy Science Association - held last month. ...
Accurate Prediction of Genomic Breeding Values Across Families Combining Linkage Disequilibrium and Co-Segregation
Prediction inaccuracies of linkage disequilibrium are a problem to geneticists, however a team of researchers has looked into a 'linear mixed model' with the benefit of greater accuracy....
Handle Sexed Semen with Care to Maximize Heifer Fertility
Proper thawing and hygiene procedures, speed of administration and accurate identification of heifers in estrus are all ways in which heifer fertility rates can be raised, according to Joseph Dalton at the University of Idaho....
Analysis of Runs of Homozygosity in Cattle Breeds
Irish researchers looking into runs of homozygosity in beef and dairy breeds could have discovered that more inbreeding takes place in pedigree dairy cattle as analysis showed greater incidences of longer runs of homozygosity in dairy breeds. ...
Managing Risk on an Expanding Farm
Herds are expanding and have been for decades. John O'Sullivan's farm in Co. Kerry is no exception and he offers advice on how to grow your business safely through methods like; properly assessing the quality of leased land, grass budgeting and using...
Implicating Culicoides Biting Midges as Vectors of Schmallenberg Virus
The recent unprecedented emergence of arboviruses transmitted by Culicoides biting midges in northern Europe has necessitated the development of techniques to differentiate competent vector species. ...
Yerba Mate (Ilex paraguariensis) As Strategic Supplement for Dairy Cows
Supplementing Yerba Mate results in lower oxidative stress which has positive effects on production and fertility, according to Pietro Celi at the University of Sydney. ...
Can Sexed Semen Accelerate Expansion in Irish Dairy Herds?
The opportunities offered by sexed semen to the dairy industry are extensive with a 90 per cent gender bias capability, writes the Irish Agriculture and Food Development Authority....
Pastured Heifers Grow Well and Have Productive First Lactations
Pastured dairy heifers in long running field trials have performed as well and better than heifer housed indoors, according to research started in 1989 by the Centre for Integrated Agricultural System. ...
The Effect of Genetic Merit for Fertility Traits on Regulation of the Somatotropic Axis in Hepatic Tissue in Holstein cows
An in depth look into the complex science behind genetic traits for fertility is given in this project outline by researchers at Teagasc....
Iowa State University Animal Industry Report 2013
A compilation of the reports from the Department of Animal Science at Iowa State University published in its 2013 'Animal Industry Report'....
Genetic Parameters for Perinatal Mortality in Irish Dairy Cattle
The Animal and Grassland Innovations Centre and TEAGASC have gathered data from Irish Cattle Breeding Federation for the years 2002 to 2011. They looked into whether perinatal mortality rates could be decreased through exploiting genetic variation traits....
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