Effects of supplemental zinc, copper, and manganese concentration and source on performance and carcass characteristics of feedlot steers 1 1Use of trade names in this publication does not imply endorsement by Colorado State University or criticism of similar products not mentioned. Mention of a proprietary product does not constitute a guarantee or warranty of the products by Colorado State University or the authors and does not imply its approval to the exclusion of other products that may also be suitable.

2017 ◽  
Vol 33 (1) ◽  
pp. 63-72 ◽  
Author(s):  
E. Caldera ◽  
J.J. Wagner ◽  
K. Sellins ◽  
S.B. Laudert ◽  
J.W. Spears ◽  
...  
Keyword(s):  
Carcass Characteristics ◽  
Manganese Concentration ◽  
State University ◽  
Colorado State University ◽  
Feedlot Steers ◽  
Supplemental Zinc ◽  
Trade Names ◽  
Proprietary Product

scholarly journals PSII-19 Effect of zinc and chromium supplementation on performance and carcass characteristics in feedlot steers

2020 ◽  
Vol 98 (Supplement_4) ◽  
pp. 400-401
Author(s):  
Harrison D Hallmark ◽  
Joanis T Zervoudakis ◽  
Juliana Akamine Torrecilhas ◽  
Luciana K Hatamoto-Zervoudakis ◽  
Henrique Toller ◽  
...  
Keyword(s):  
Dry Matter ◽  
Carcass Characteristics ◽  
Dietary Treatment ◽  
Feedlot Cattle ◽  
The Other ◽  
Carcass Weight ◽  
Dry Matter Intake ◽  
Marbling Score ◽  
Feedlot Steers ◽  
Supplemental Zinc

Abstract One hundred and sixty-five crossbred steers were used in this experiment to investigate the influence of supplemental zinc (Zn) and chromium (Cr) on performance and carcass characteristics of feedlot steers fed steam-flaked corn-based finishing diet. Steers were blocked by initial BW (518.9 ± 8.4 kg) within cattle source (2 sources) and housed in pens containing 6–7 steers per pen. Pens within blocks were randomly assigned to treatments in a 2 x 2 factorial arrangement, with factors being: 30 or 90 mg of Zn/kg DM and 0.0 or 0.25 mg Cr/kg DM. Treatments consisted of: 1) 30 mg Zn/kg DM; 2) 90 mg Zn/kg DM; 3) 30 mg Zn + 0.25 mg Cr/kg DM; and 4) 90 mg Zn/kg + 0.25 mg Cr/kg DM. Zinc was supplemented as ZnSO4 and Cr supplemented as Cr propionate. Steers were individually weighted on 2 consecutive days prior to initiating dietary treatment and on 2 consecutive days at the end of the experiment. Dietary treatment were initiated 64 days prior to slaughter (total days on feed = 240). All cattle were transported to a commercial abattoir on the same day and slaughtered. Steers receiving supplemental Cr had greater final BW (P < 0.02) and ADG (P < 0.03) when compared to non-Cr supplemented steers. Additionally, hot carcass weight (P < 0.005) and marbling score (P < 0.03) were greater (P < 0.005) for steers receiving 30 mg Zn/kg DM + 0.25 mg Cr/kg DM when compared with all other treatments. Dry matter intake, morbidity and mortality, and all the other carcass measurements were similar across treatments. These data indicate that under the conditions of this experiment, Zn and Cr supplementation may influence feedlot cattle growth and carcass characteristics.

A MODEL FOR DEVELOPING HIGH-QUALITY ONLINE COURSES: INTEGRATING A SYSTEMS APPROACH WITH LEARNING THEORY

2008 ◽  
Vol 12 (3) ◽  
Author(s):  
Maria Jean Puzziferro ◽  
Kaye Shelton
Keyword(s):  
Online Education ◽  
Design Theory ◽  
Systems Approach ◽  
Online Courses ◽  
Process Models ◽  
State University ◽  
High Quality ◽  
Colorado State University ◽  
Online Instructional Design ◽  
Online Course Development

As the demand for online education continues to increase, institutions are faced with developing process models for efficient, high-quality online course development. This paper describes a systems, team-based, approach that centers on an online instructional design theory (Active Mastery Learning) implemented at Colorado State University-Global Campus.

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