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Reproduction and Breeding Featured Articles

Role of Breeding, Genetics in the Welfare of Farm Animals
Breeding for higher productivity may be associated with a deterioration in the welfare of farm animals but genetics can also contribute to solving issues such as aggression in pigs and laying hens, according to a recent review paper. ...
Effects of Dystocia on Subsequent Performance in Dairy Cows
Researchers for TEAGASC have found that dystocia significantly impacts on milk production and reproductive performance. Building on recent work by academics such as D.P Berry and J.M Mee the report sampled over 2 million calving events since 2002 and...
Identifying Profitable Beef Bulls for Use in Irish Dairy Herds
TEAGASC Researchers at the Animal and Grassland Research and Innovations Centre have been working to create a new index which should facilitate easy identification of the most suitable beef bulls for use in dairy herds. ...
Poor Temperment Could Mean Poor Performance
Temperamental cattle can be a hazard to themselves and to the people handling them as well as to other cattle. Compared to calm cattle, cattle exhibiting a heightened temperament are noted to spend more time inspecting their surroundings or responding...
Nourishing and Managing the Dam and Calf for Optimal Lactation, Reproduction and Immunity
Rearing programmes should be designed to take into account long-term consequences on milk yield, according to Dr Alex Bach of IRTA, Spain, at a recent symposium on ruminant nutrition. ...
Dairy Reproductive Management Using AI
Reproductive efficiency of the dairy herd is important to the economic success of the dairy operation. Michael Looper, Professor of Animal Science at the University of Arkansas discussed artificial insemination for dairy reproductive management....
Selecting Cows for Low Methane Emissions
The considerable variation in methane emissions from individual cows raises the possibility of selecting cows for low methane emissions, according to scientists at the University of Nottingham in the UK. ...
Use of Ultrasonography to Age Pregnancy in Early Gestation in Dairy Cows
The use of ultrasound to monitor the development of calves in dairy cattle is becoming more and more popular acording to a study by Klibs N.A. Galvão, DVM, MPVM, PhD, assistant professor in the Department of Large Animal Clinical Sciences, College of...
Dairy Industry Reducing Phosphorus Intake and Output
Reducing phosphorus in dairy diets doesn’t change a cow’s productivity, but it does affect the environmental impact that cow might have, according to a Texas AgriLife Extension Service specialist....
Housing and Management Biggest Contributors to Welfare
Serious welfare risks to cattle and calves in the EU, identified in a scientific review by the EFSA Panel on Animal Health and Welfare (AHAW), were associated with housing and management....
Removing Faulty Sperm from AI Process
All bull semen is not created equal, but Peter Sutovsky has found a way to level the bovine-fertility playing field. Research from the University of Missouri reproductive scientist identifies faulty sperm and takes them out of the equation for artificial...
High Sperm Numbers - Detrimental Effects on Bull Sperm During Liquid Storage
Research from the University of Limerick looks at whether high sperm numbers have a detrimental effect on bull sperm during liquid storage. ...
Epigenetics: A new Challenge in the Post-Genomic Era
While controversial, epigenetics does appear to offer potentially significant value to livestock genetic programmes. Oscar Gonzalez-Reico from the Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria, Madrid, Spain looks at the challenges...
Methane Digester Helps Farmer Convert Manure into Money
The anaerobic digester that Steve Reinford installed on his Pennsylvania dairy farm three years ago cost a million dollars, but he can already count the ways it pays for itself. Energy from the digester, which turns cow manure into methane, powers about...
Using Genomics to Improve Dairy Cattle
The British Society of Animal Science looks at how genetics can help producers improve their herd, not just for production traits, but also for traits such as greenhouse gas emissions and welfare. ...
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