scholarly journals Oklahoma State University proposed Advanced Technology Research Center. Environmental Assessment

10.2172/95340 ◽  
1995 ◽  
Author(s):  
2020 ◽  
Vol 98 (Supplement_2) ◽  
pp. 64-65
Author(s):  
Michael Sims ◽  
Paul A Beck ◽  
Cyril B Stewart ◽  
Cody Shelton ◽  
Reagan N Cauble ◽  
...  

Abstract Temperament has been reported to impact calf performance. The purpose of this study was to investigate the relationship between maternity disposition and calf temperament at weaning to finishing performance. Maternal disposition at calving and calf chute behavior at weaning data were collected from the University of Arkansas between August 2017 and May 2018. Calves were finished at Oklahoma State University Willard Sparks Research Center between October 2018 and August 2019. Cow behavior was observed at calving and received a disposition score (CDS) that used a 5-point scale where a score of 1 was highly aggressive, and a 5 was apathetic. At weaning, calf weight (WW) and chute behavior (CS) was recorded. Chute behavior at weaning used a 5-point scale; a score of 1 was indicative of a calm exit, and a 5 was aggressive when exiting the chute. Data were analyzed using the GLIMMIX procedure of SAS. Significance was declared at P ≤ 0.05. Calves with CS of 2 at weaning had greater BW both on arrival to feed yard (P < 0.01) and at harvest (P = 0.01) than calves with a CS of 3. Calves from cows with CDS of 3 had greater feedlot arrival weights (P = 0.01) and ADG (P = 0.01) than calves from cows with CDS of 4. This study indicates that cattle with nervous chute behavior (CS = 3) had potentially detrimental effects on performance and can impact overall life-time productivity.


2014 ◽  
Vol 933 ◽  
pp. 953-958
Author(s):  
Xiao Hong Wang ◽  
Yu Jie Yan ◽  
Qiu Xi Li

The thesis first analyzes the failure mechanism of contaminant lock, then the contaminant sensitivity theory or the Omega theory, which is first put forward by the Oklahoma state university hydrodynamic research center, is introduced and being applied to the servo valve contaminant lock life analysis and the contaminant sensitivity test method of servo valve is presented. After that, the value of servo valve contaminant lock sensitivity as well as the contaminant lock life can be calculated. It turned out that this method can accurately evaluate servo valves resistance on pollution lock and contaminant lock life, which can offer guidance on servo valve selecting and reliability analysis.


2001 ◽  
Author(s):  
John Toerge ◽  
Joseph Bleiberg ◽  
Michael Rose

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