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Iowa State University

Life Sciences

Animal Science

2011

Articles 1 - 5 of 5

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Energy Use And Nutrient Cycling In Pig Production Systems, Mark S. Honeyman, Peter J. Lammers Jan 2011

Energy Use And Nutrient Cycling In Pig Production Systems, Mark S. Honeyman, Peter J. Lammers

Leopold Center Completed Grant Reports

Researchers explored all aspects of energy use in hog production from the perspective of two systems currently in use in Iowa—conventional confinement systems and bedded hoop barns.


Distillers Dried Grains (Ddg) Feeding And Impacts On Meat Quality For Grazing Steers, Mark S. Honeyman, Daniel G. Morrical Jan 2011

Distillers Dried Grains (Ddg) Feeding And Impacts On Meat Quality For Grazing Steers, Mark S. Honeyman, Daniel G. Morrical

Leopold Center Completed Grant Reports

This study suggests that pasture-reared cattle, when given access to soyhull/DDG self-fed by-products, exhibit excellent responses on both live performance and carcass traits, including CLA fatty acid levels.


Iowa Hoop Structures Used For Confined Beef Cattle Feeding: A Survey, Mark S. Honeyman, Jay D. Harmon Jan 2011

Iowa Hoop Structures Used For Confined Beef Cattle Feeding: A Survey, Mark S. Honeyman, Jay D. Harmon

Iowa State Research Farm Progress Reports

Beginning in the mid-1990s, hoop structures became available to Iowa farmers as an alternative housing system for livestock, primarily swine. Iowa State University was very active in research and demonstrations of hoop barns for swine. ISU also built hoop barns for calving at the ISU Rhodes Research Farm, Rhodes, IA in about 2000. From this work, in 2004/05 ISU built one of the first hoop barns for cattle feeding at the ISU Armstrong Research Farm, Lewis, IA. Frequently, questions are asked about the acceptance of hoop barns for beef cattle and how many beef cattle hoop barns are in ...


Effects Of Calf Age And Dam Age On Circulating Bvdv Ii Antibody Levels Prior To Vaccination In Angus Weanling Calves, Erika Diane Downey, Richard G. Tait Jr., Mary Sue Mayes, Dorian J. Garrick, Julia Ridpath, James M. Reecy Jan 2011

Effects Of Calf Age And Dam Age On Circulating Bvdv Ii Antibody Levels Prior To Vaccination In Angus Weanling Calves, Erika Diane Downey, Richard G. Tait Jr., Mary Sue Mayes, Dorian J. Garrick, Julia Ridpath, James M. Reecy

Iowa State Research Farm Progress Reports

Newborn calves passively acquire antibodies from their dams via consumption of colostrum immediately after birth. Colostrum quality and quantity may differ by dam age affecting the amount of circulating maternally derived antibodies. The objective of this study was to evaluate if there are differences in calf titers of maternal antibodies based on age of dam and age of calf. This knowledge is important for determining vaccination strategies because passively acquired antibodies for bovine viral diarrhea virus I and II (BVDV) have been shown to block the ability of calves to develop their own specific immune response to BVDV.


Correlations Between Carcass Traits And Mineral Concentrations In Angus Beef Raised In Iowa, Richard G. Tait Jr., Qing Duan, Qi Liu, Mary Sue Mayes, Donald C. Beitz, James M. Reecy Jan 2011

Correlations Between Carcass Traits And Mineral Concentrations In Angus Beef Raised In Iowa, Richard G. Tait Jr., Qing Duan, Qi Liu, Mary Sue Mayes, Donald C. Beitz, James M. Reecy

Iowa State Research Farm Progress Reports

Beef is a nutritious food that is known to have high bioavailability for several minerals such as iron and zinc. Although beef is typically high in these nutrients, there is much animalto-animal variation in mineral contents. The objective of this study is to report the relationship between traditional carcass traits and mineral concentrations within the longissimus dorsi.