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Reproduction and Breeding Featured Articles

Ready for Calving?
Winter and spring calving times are just around the corner....
Criteria for evaluating bulls
As bulls come off the summer breeding pastures, producers have several criteria to consider when making culling decisions, according to experts at the Kansas State University Beef Cattle Institute....
Milk progesterone concentration useful for detection of candidate genes associated with dairy cattle fertility
The study entitled “Genome-wide association study for endocrine fertility traits using single nucleotide polymorphism arrays and sequence variants in dairy cattle” identified several potential candidate genes, and DNA variants that can contribute...
How Do I Get Started in Dairy Beef?
With decreased crop profits and dairy profits, both dairy and grain farmers are looking for ways to increase income by sending feed stuffs off the farm on the hoof instead of in a hopper or tanker, writes Jason Hartschuh with The Ohio State University...
Ancient Genomics Pinpoint Origin and Rapid Turnover of Cattle in the Fertile Crescent
The keeping of livestock began in the Ancient Near East and underpinned the emergence of complex economies and then cities. Subsequently, it is there that the world's first empires rose and fell. Now, ancient DNA has revealed how the prehistory of the...
Trichomoniasis Management Helps Increase Calving Rates
Reports by producers of a high incidence of abortions and low pregnancy rates in beef cattle herds in Chihuahua led researchers at Autonomous University of Chihuahua in Mexico to uncover the root cause of the problem, writes Ivan Leyva-Baca, DVM, PhD,...
Dairy Calves are Natural Optimists or Pessimists, Just Like Us
Some calves are inherently optimistic or pessimistic, just as humans are, a new University of British Columbia study has found....
Ruminant Abortion Requires Diagnostics to Fight Disease
Repeated abortions in a herd can have a severe economic impact on farming operations, writes Laurent Delooz, Regional Association for Animal Health and Identification (ARSIA) based in Belgium....
Jersey Breed Popularity Growing due to Higher Milk Solids
There has been an increase in the number of dairy farmers getting into the Jersey breed, following the removal of milk quota, that’s according to Kevin Brady – chairman of the Jersey Society of Ireland. Eoin McCarthy reports for TheCattleSite....
Randall Lineback Cattle - The Breed that Saved America
The Randall Lineback is among the oldest breeds of cattle in the US with origins back to the Pilgrim Fathers. The Randall family in Sunderland, Vermont had sustained this heritage breed since 1912, writes John Wilkes....
Early Winter Coat Shedding Correlates with Better Cattle Breeding Performance
Genetic adaptation to environment may hold the key to breeding performance in beef cattle, according to research at the University of Arkansas System Division of Agriculture....
How DNA Parentage Testing in Cattle is Done
We’ve all seen the pictures of DNA that looks like a spiral staircase, but in fact DNA is made up of units called base pairs and there are four different base pairs represented by the letters A, T, G and C. Cattle have 2.8 billion base pairs and humans...
DNA Parentage Testing in Cattle: a Good Investment
Every cow-calf producer likes to believe that his herd bulls are top notch animals and that they’re all pulling their weight in terms of siring calves, but in reality there is a lot of variation, writes Angela Lovell....
Genomic Testing Can Decrease Genetic Lag
Until now, genomic information has mainly been used to improve the accuracy of genomic breeding values for breeding animals, but recent Danish research shows it can also be used to reduce genetic lag....
Managing Cow Lactation Cycles
Poor feeding management of cows can lead to shorter, lower yielding lactations and increase calving interval. This report by John Moran from Asia Dairy Network explains the changing feed requirements of cows over the lactation cycle and how to match this...
 
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