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Life Sciences

Richard G. Tait Jr.

Real-Time Ultrasound

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Prediction Of Retail Product And Trimmable Fat In Beef Cattle Using Ultrasound Or Carcass Data, Richard G. Tait Jr. Apr 2013

Prediction Of Retail Product And Trimmable Fat In Beef Cattle Using Ultrasound Or Carcass Data, Richard G. Tait Jr.

Richard G. Tait Jr.

The most widely used system to predict percent retail product from the four primals in beef cattle is USDA yield grade. The purpose of this study was to determine if routine ultrasound measurements and additional rump measurements could be used to more accurately predict the percent lean from the four primals than the carcass measurements going into the USDA yield grade equation. This study utilized market cattle (n = 471) consisting of Angus bulls, Angus steers, and crossbred steers. The right side of each carcass was fabricated into retail cuts, lean trim, fat, and bone; weights of each component were …


Usefulness Of Cross-Sectional Image To Predict Intramuscular Fat For Feedlot Application Using Real-Time Ultrasound, Kelley J. Vogel, Doyle E. Wilson, Gene H. Rouse, Jennifer A. Minick, Richard G. Tait Jr., Jodi Kruser Apr 2013

Usefulness Of Cross-Sectional Image To Predict Intramuscular Fat For Feedlot Application Using Real-Time Ultrasound, Kelley J. Vogel, Doyle E. Wilson, Gene H. Rouse, Jennifer A. Minick, Richard G. Tait Jr., Jodi Kruser

Richard G. Tait Jr.

The purpose of this project was to determine if it is possible to accurately calculate both %IMF and 12th–13th subcutaneous fat from the cross-sectional ribeye image with a guide in place, therefore eliminating the need for four %IMF images. This would make this technology less time consuming and more efficient. The correlation between the traditional longitudinal %IMF and the %IMF from the ribeye image was moderate and in both the case of ether extract %fat and marbling score, the traditional longitudinal %IMF was more highly correlated than the ribeye image %IMF. From this analysis, it can be concluded that the …


Growth And Development Of Angus-Wagyu Crossbred Steers, Gene H. Rouse, M. Ruble, S. Greiner, Richard G. Tait Jr., Craig L. Hays, Doyle E. Wilson Apr 2013

Growth And Development Of Angus-Wagyu Crossbred Steers, Gene H. Rouse, M. Ruble, S. Greiner, Richard G. Tait Jr., Craig L. Hays, Doyle E. Wilson

Richard G. Tait Jr.

Serially scanning Angus-Wagyu crossbred steers with real-time ultrasound suggests the following conclusions: · Comparing real-time ultrasound measurements, including fat cover, percent intramuscular fat and rib eye area, with carcass measurements at harvest time suggests ultrasound measurements are accurate enough to be used as a body composition evaluation tool. · Serial ultrasound measurements indicate that muscle deposition based on rib eye area occurred linearly from 772 to 1,406 pounds, and perhaps to a heavier weight than expected. · Subcutaneous fat ultrasonic measurements suggest a slow linear increase in fat cover until the cattle weighed 1,100 lbs., and then fat cover increased …


The Use Of Real-Time Ultrasound To Predict Live Feedlot Cattle Carcass Value, Gene H. Rouse, S. Greiner, Doyle E. Wilson, Craig L. Hays, Richard G. Tait Jr., Abebe Hassen Apr 2013

The Use Of Real-Time Ultrasound To Predict Live Feedlot Cattle Carcass Value, Gene H. Rouse, S. Greiner, Doyle E. Wilson, Craig L. Hays, Richard G. Tait Jr., Abebe Hassen

Richard G. Tait Jr.

No abstract provided.


Prediction Of Lean In The Round Using Ultrasound Measurements, Richard G. Tait Jr., Gene H. Rouse, Doyle E. Wilson, Craig L. Hays Apr 2013

Prediction Of Lean In The Round Using Ultrasound Measurements, Richard G. Tait Jr., Gene H. Rouse, Doyle E. Wilson, Craig L. Hays

Richard G. Tait Jr.

Real-time ultrasound (RTU) images were collected on 170 Angus sired steers. These steers had routine carcass data collected, as well as lean mass weights after round fabrication. Lean weight in the round was determined by adding the peeled knuckle, inside round, and outside round weights together. There were four significant independent variables (P < .05) used to predict lean in the round from live measurements. They were: live weight (WT), ultrasound fat thickness between the 12th and 13th ribs (UFT), ultrasound ribeye area between the 12th and 13th ribs (UREA), and gluteus medius lean depth (GM).


Comparison Of Ultrasound And Carcass Measures To Predict The Percentage Of Lean Beef From Four Primal Cuts, Richard G. Tait Jr., Gene H. Rouse, Doyle E. Wilson, Craig L. Hays Apr 2013

Comparison Of Ultrasound And Carcass Measures To Predict The Percentage Of Lean Beef From Four Primal Cuts, Richard G. Tait Jr., Gene H. Rouse, Doyle E. Wilson, Craig L. Hays

Richard G. Tait Jr.

The objective of this study was to determine how realtime ultrasound (RTU) measurements would compare with carcass measurements to predict the percentage of lean from the four primals (PERL4P). Data were collected on market ready cattle (n=265). Traditional carcass measures collected were: 1) hot carcass weight (HCW), 2) 12-13th rib fat thickness (CFAT), 3) 12-13th rib ribeye area (CREA), and 4) percentage of kidney, pelvic, and heart fat (KPH). Live animal ultrasound measures collected were: 1) scan weight (SCANWT), 2) 12-13th rib fat thickness (UFAT), 3) 12-13th rib ribeye area (UREA), 4) subcutaneous fat thickness over the termination of the …