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Full-Text Articles in Life Sciences
When Using Intensive Grazing Practices, Does It Matter How Often You Move Cattle To A New Paddock On Improved, Irrigated Pastures In Utah?, R. D. Weidmeier
When Using Intensive Grazing Practices, Does It Matter How Often You Move Cattle To A New Paddock On Improved, Irrigated Pastures In Utah?, R. D. Weidmeier
All Current Publications
This publication includes results from a study that answers the question of how often to move cattle to a new paddock when using intensive grazing practices.
Utilization Of Dried Distillers Grains For Developing Beef Heifers, J. L. Martin, Andrea S. Cupp, Richard J. Rasby, Z. C. Hall, Richard N. Funston
Utilization Of Dried Distillers Grains For Developing Beef Heifers, J. L. Martin, Andrea S. Cupp, Richard J. Rasby, Z. C. Hall, Richard N. Funston
Department of Animal Science: Faculty Publications
A 2-yr study was conducted at 2 locations to determine if supplementing beef heifers with dried distillers grains (DDG) as an energy source affected growth or reproduction. Spring-born crossbred heifers (n = 316) were blocked by age or sire and age and assigned randomly to DDG or control (dried corn gluten feed, whole corn germ, urea) supplement. Heifers received prairie hay in amounts sufficient for ad libitum intake and 0.59% of BW DDG or 0.78% of BW control supplement (DM basis). Supplements were formulated to be isocaloric, but protein degradability differed. Supplemental undegradable intake protein intake from DDG averaged 267 …
Bovine Respiratory Disease In Feedlot Cattle: Phenotypic, Environmental, And Genetic Correlations With Growth, Carcass, And Longissimus Muscle Palatability Traits, G. D. Snowder, L. Dale Van Vleck, L. V. Cundiff, G. L. Bennett, M. Koohmaraie, M. E. Dikeman
Bovine Respiratory Disease In Feedlot Cattle: Phenotypic, Environmental, And Genetic Correlations With Growth, Carcass, And Longissimus Muscle Palatability Traits, G. D. Snowder, L. Dale Van Vleck, L. V. Cundiff, G. L. Bennett, M. Koohmaraie, M. E. Dikeman
Department of Animal Science: Faculty Publications
Bovine respiratory disease (BRD) is the most costly feedlot disease in the United States. Selection for disease resistance is one of several possible interventions to prevent or reduce the economic loss associated with animal disease and to improve animal welfare. Undesirable genetic relationships, however, may exist between production and disease resistance traits. The objectives of this study were to estimate the phenotypic, environmental, and genetic correlations of BRD with growth, carcass, and LM palatability traits. Health records on 18,112 feedlot cattle over a 15-yr period and slaughter data on 1,627 steers over a 4-yr period were analyzed with bivariate animal …
Effect Of Competition On Gain In Feedlot Bulls From Hereford Selection Lines, L. Dale Van Vleck, L. V. Cundiff, R. M. Koch
Effect Of Competition On Gain In Feedlot Bulls From Hereford Selection Lines, L. Dale Van Vleck, L. V. Cundiff, R. M. Koch
Department of Animal Science: Faculty Publications
This study examined competition effects on ADG in the feedlot of 1,882 Hereford bulls representing 8 birth years from a selection experiment. Each year, 8 feedlot pens were used to feed bulls in groups, with 2 pens nested within each of the 4 selection lines. Gains were recorded for up to 8 periods of 28 d. Models for analyses included pen effects (fixed or random), fixed effects such as year and line, and random direct genetic, competition genetic (and in some analyses competition environmental), and environmental effects. Each pen mate as a competitor affected the records of all others in …
Across-Breed Adjustment Factors For Expected Progeny Differences For Carcass Traits, L. Dale Van Vleck, L. V. Cundiff, T. L. Wheeler, S. D. Shackelford, M. Koohmaraie
Across-Breed Adjustment Factors For Expected Progeny Differences For Carcass Traits, L. Dale Van Vleck, L. V. Cundiff, T. L. Wheeler, S. D. Shackelford, M. Koohmaraie
Department of Animal Science: Faculty Publications
Adjustment factors to allow comparison of EPD from several breed associations for birth, weaning, and yearling weights have been available for more than 10 yr. This paper describes steps to calculate adjustment factors for EPD for 4 carcass traits: marbling score, fat thickness, ribeye area, and retail product percentage. The required information is the same as for the weight traits: 1) breed of sire solutions based on measurements on progeny at the US Meat Animal Research Center (USMARC) that have sires with breed association EPD, 2) mean EPD of sires weighted by number of progeny at USMARC (USMARC progeny not …
Plasma Ghrelin Concentrations Of Beef Cattle Consuming A Similar Amount Of Dietary Energy Supplied By Different Ingredients, Aimee Wertz-Lutz, Jeff Clapper, Jenny Thurlow, Donald Beitz, Allen Trenkle
Plasma Ghrelin Concentrations Of Beef Cattle Consuming A Similar Amount Of Dietary Energy Supplied By Different Ingredients, Aimee Wertz-Lutz, Jeff Clapper, Jenny Thurlow, Donald Beitz, Allen Trenkle
South Dakota Beef Report, 2007
Previous research demonstrated that restricting nutrient intake by decreasing DMI of a high-grain diet increased plasma ghrelin concentrations. Objectives of this experiment were to determine 1) whether dietary ingredient composition influenced plasma ghrelin concentrations when energy intake was similar, and 2) whether relationships existed between plasma ghrelin concentrations and plasma insulin, NEFA, and GH concentrations or end-products of carbohydrate fermentation in the rumen. Five steers (1290 ± 39.9 lb) were used in a crossover design with dietary treatments of 50% hay-50% concentrate (HAY) offered at an amount that would meet the steer’s NEm requirement plus supply an additional 3.5 Mcal …
Relationship Of Plasma Ghrelin Concentrations With End-Products Of Carbohydrate Fermentation For Beef Cattle During A Feeding Interval, Aimee Wertz-Lutz, Jay Daniel, Jeff Clapper, Allen Trenkle, Donald Beitz
Relationship Of Plasma Ghrelin Concentrations With End-Products Of Carbohydrate Fermentation For Beef Cattle During A Feeding Interval, Aimee Wertz-Lutz, Jay Daniel, Jeff Clapper, Allen Trenkle, Donald Beitz
South Dakota Beef Report, 2007
Four steers (BW 1281±28.2 lb) were used to determine the relationship of plasma ghrelin concentrations with end-products of carbohydrate fermentation and hormones and metabolites indicative of nutrition status during a 12-h feeding interval. A common high-energy diet was offered at 240% of the intake necessary for BW maintenance (2.4xM) or 80% of the intake necessary for BW maintenance (0.8xM). At initiation of period I, 2 steers were allowed 2.4xM intake, whereas intake for the remaining 2 steers was restricted to 0.8xM. Equal aliquots of feed were offered at 0800 and at 2000 h. On 7, 14, and 21 d following …
Prolonged, Moderate Nutrient Restriction In Beef Cattle Results In Persistently-Elevated Plasma Ghrelin Concentrations, Aimee Wertz-Lutz, Jay Daniel, Jeff Clapper, Allen Trenkle, Donald Beitz
Prolonged, Moderate Nutrient Restriction In Beef Cattle Results In Persistently-Elevated Plasma Ghrelin Concentrations, Aimee Wertz-Lutz, Jay Daniel, Jeff Clapper, Allen Trenkle, Donald Beitz
South Dakota Beef Report, 2007
Four steers (BW 1281±28.2 kg) were used in a crossover design to determine the effects of prolonged, moderate energy and protein restriction on plasma ghrelin and GH concentrations. A common high-energy diet was offered at 240% of the intake necessary for BW maintenance (2.4xM) or 80% of the intake necessary for BW maintenance (0.8xM). As a common starting point, all steers were adjusted to 2.4xM during a 23-d pre-trial adaptation period. At initiation of period 1, 2 steers remained at 2.4xM, whereas intake for the remaining 2 steers was restricted to 0.8xM. Feed allotments were offered twice daily in equal …
Effects Of Srp Vaccine In Reducing E. Coli O157:H7 In Cattle, A. B. Thornton, D. U. Thomson, J. T. Fox, G. H. Loneragan, D. Burkhardt, T. G. Nagaraja
Effects Of Srp Vaccine In Reducing E. Coli O157:H7 In Cattle, A. B. Thornton, D. U. Thomson, J. T. Fox, G. H. Loneragan, D. Burkhardt, T. G. Nagaraja
Kansas Agricultural Experiment Station Research Reports
Cattle are the main reservoir ofEscherichia coliO157:H7, which is a foodborne pathogen that causes bloody diarrhea in adults and kidney damage in children .E. coliO157 is shed in the feces of cattle, which can be a contamination source of water, ground beef, fresh vegetables, and unpasterized milk and fruit juices. In 2003, shiga-toxin producingE. coliO157:H7 caused 73,000 illnesses, which resulted in over 2,000 hospitalizations and 60 deaths in the United States. The estimated annual cost of this illness was $405 million, which included $370 million for premature deaths, $30 million for medical care, and …
Case Study: Dried Distillers Grains As Creep Feed For Yearling Beef Cattle Grazing Sandhill Range, R. N. Funston, D. C. Adams, M. C. Stockton
Case Study: Dried Distillers Grains As Creep Feed For Yearling Beef Cattle Grazing Sandhill Range, R. N. Funston, D. C. Adams, M. C. Stockton
West Central Research and Extension Center, North Platte
Seventy-nine crossbred steers and heifers born in June or August were stratified by weight, calving group, and sex and assigned to treatment or control. Yearlings in the treatment group (TRT; n = 40) grazed native summer Sandhill range and had access to ad libitum dried distillers grains (DDG) pellet in a creep feeder for 54 d of a 63-d grazing period. Control (CON; n = 39) yearlings grazed in an adjacent pasture without DDG. Immediately after the grazing period, yearlings were placed in a feedlot and fed to a similar finish end point. Individual forage and DDG intake …