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Author : Charles Looney
Publisher :
ISBN 13 :
Total Pages : 6 pages
Book Rating : 4.:/5 (12 download)
Download or read book Ultrasound Scanning to Measure Body Composition in Beef Cattle written by Charles Looney and published by . This book was released on 2020 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Tom Roger Troxel
Publisher :
ISBN 13 :
Total Pages : 4 pages
Book Rating : 4.:/5 (769 download)
Download or read book Ultrasound Scanning to Measure Body Composition in Beef Cattle written by Tom Roger Troxel and published by . This book was released on 2011 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Brett Barham
Publisher :
ISBN 13 :
Total Pages : 4 pages
Book Rating : 4.:/5 (78 download)
Download or read book Ultrasound Scanning to Measure Body Composition in Beef Cattle written by Brett Barham and published by . This book was released on 2006 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Jane A. Parish
Publisher :
ISBN 13 :
Total Pages : 4 pages
Book Rating : 4.:/5 (754 download)
Download or read book Ultrasound Scanning Beef Cattle for Body Composition written by Jane A. Parish and published by . This book was released on 2008 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Sorrel Ann Clement
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (69 download)
Download or read book The Use of Serial Ultrasound Evaluation of Body Composition Traits to Predict Performance Endpoints in Commercial Beef Cattle written by Sorrel Ann Clement and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Bos indicus influenced primiparous heifers (n = 300) and yearling Beefmaster heifers (n = 172) were evaluated to determine relationships between serial carcass ultrasound traits and ability to breed in short (45 to 90 d) breeding seasons. Data collected included carcass ultrasound traits: ribeye area (REA), intramuscular fat (IMF), rump fat (UFAT), ribfat, weight, and body condition score taken at yearling age, pregnancy determination, before breeding, and after the breeding season when pregnancy status was recorded. A logistic regression analysis was used to determine the influence of ultrasound traits and body condition on pregnancy status. Odds ratios suggested the likelihood of primiparous cattle rebreeding would have been increased by 93% if IMF would have averaged 3.5% instead of 2.5% as yearlings, or an increase in the average ribfat as yearlings from 0.287 to 0.387 cm would have increased the odds of rebreeding by 88%. Increased average body condition score of 6.5 rather than 5.5 at 30 days postpartum in primiparous cows was estimated to have increased rebreeding 367%. The odds of yearling Beefmaster heifers successfully breeding during a 45-day season would have been increased by 73% (year 1) or 274% (year 2) by increasing REA 6.4 to 6.5 cm^2 at a year of age. Steers were serially scanned beginning at approximately 265 kg of body weight through harvest in 56 day +/- 6 intervals. Data collected included ultrasound measurements (ribeye area (REA), 12th rib fat thickness (RibFat), percent intramuscular fat (IMF), and rump fat (UFAT)), weight, and carcass data. Days to choice was calculated for each steer based on a linear regression. The IMF deposition was quantified as quadratic from scans 1-6 and linear when cattle were on full feed. Prediction models at scans 1, 2, 3, 4, 5, and 6 yielded R-square values of 0.20, 0.25, 0.41, 0.48, 0.59, and 0.49, respectively for days to choice. Odds ratios suggested that if steers in this study had averaged 3.78% at day 0 rather than 2.78, the odds of cattle grading premium choice or greater would have been increased by 300%.
Author : Jeremy W. Buckley
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (598 download)
Download or read book Evaluation of Ultrasound Analysis of Body Composition in Beef Cattle written by Jeremy W. Buckley and published by . This book was released on 1997 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Richard Paul Maulsby
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (662 download)
Download or read book Evaluation of Early Measures of Body Composition as Related to Beef Carcass Traits written by Richard Paul Maulsby and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Two similarly managed trials were conducted to investigate serial ultrasound measures of body composition (longissimus muscle area (ULMA), 12th - rib fat thickness (UFAT), and percentage of intramuscular fat (UIMF)) early in the lives of feeder calves as they compared to carcass traits. Group 1 cattle were Charolais-sired by Brahman-British crossbred dams whereas Group 2 cattle were purebred Beefmaster. Both groups were fed at the same commercial feedlot (Graham Land and Cattle Co.) in Gonzales, Texas. In both data sets classifications were developed for ribeye area of Lower (less than 70.95 cm2, Middle (between 70.95 cm2 and 90.3 cm2) and Upper (over 90.3 cm2) based on a range that fit within the ribeye specifications of such branded beef programs as Certified Angus Beef and Nolan Ryan's Tender Aged Beef. Differences among ribeye area and quality grade (Choice vs. Select) categories were evaluated for ultrasound and carcass traits. As reported previously, correlations between ultrasound measures and carcass traits became larger at times closer to harvest. In both sets of cattle, there were no differences in fat thickness or intramuscular fat at the ultrasound scan sessions or in these carcass traits due to ribeye area category. The same trend for quality grade classification was not seen across both groups of cattle however. In Group 1, there were no differences in early measures of body composition between carcass quality grade classes except for ultrasound fat thickness at weaning. However, in Group 2 cattle there were differences in ultrasound fat at times 1 and 2, IMF at time 1, and ribeye area at time 2 between cattle that graded choice verses those that graded select. Correlations between ultrasound measures of REA (r of .26 to .50) and ultrasound REA and carcass REA (r of .16 to .81) appeared to be lower in Group 1 vs. Group 2 (r of .55, and .64 to 81 respectively). Results from this project imply that changes in ribeye area will not automatically result in changes of marbling and vice versa. Furthermore, these results also show that ultrasound is useful to help predict beef carcass traits, but that early measures of body composition used alone do not explain a large portion of the variation in the carcass measures and specific methods should be developed by different biological cattle types.
Author : Mercedes Marambio
Publisher :
ISBN 13 :
Total Pages : 132 pages
Book Rating : 4.:/5 (678 download)
Download or read book The Use of Ultrasound Body Composition Measurements to Track Puberty in Heifers and to Predict the Reproductive Ability of Mature Beef Cows written by Mercedes Marambio and published by . This book was released on 2005 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: Two experiments were conducted in an attempt to predict age at puberty in heifers and reproductive performance in cows with real-time ultrasound as one of the principal tools. We measured backfat, ribeye area, intramuscular fat and rump fat. Other measurements used in the heifers were body weight and hip height combined with metabolic and hormonal profiles (glucose, insulin, and progesterone). Weight was a significant variable to predict onset of puberty. We did not find statistical evidence that adding the ultrasound measurements as explanatory variables to the logistical regression model will improve the fitness of the model. However that does not mean there is no relationship between ultrasound measurements and age at puberty. Rump fat (RF) at least had a tendency (r 0.167 and P = 0.128) to be a valuable tool in the model for predicting puberty. The lack of statistical evidence may be caused by the limited data set. The initial analysis conducted with the cows identified a high correlation among several of the primary predictor variables (ultrasound measurements). That analysis demonstrated the possibility of a statistically significant relationship between the probability of a successful pregnancy and the lower quip measurement. Upper Quip (UQ) could be another Intramuscular fat (IMF) measurement of value and merits further investigation. The log likelihood test value for UQ was close (P = 0.06) to being significant.
Author : Jennifer E. Dumas
Publisher :
ISBN 13 :
Total Pages : 186 pages
Book Rating : 4.:/5 (56 download)
Download or read book Body Condition Scores and Ultrasound Backfat Images as Predictors of Live Body Composition Estimated from Body Weight and Deuterium Oxide Dilution in Holstein-Friesian Cattle written by Jennifer E. Dumas and published by . This book was released on 1993 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Kerrianne Lisa Otto
Publisher :
ISBN 13 :
Total Pages : 290 pages
Book Rating : 4.E/5 ( download)
Download or read book Relationship Between Body Condition Score, Ultrasonic Fat Measurement, and Composition of 9-11th Rib Tissue in Holstein Dairy Cows written by Kerrianne Lisa Otto and published by . This book was released on 1990 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : D. Lister
Publisher : Elsevier Science & Technology
ISBN 13 :
Total Pages : 264 pages
Book Rating : 4.:/5 (89 download)
Download or read book In Vivo Measurement of Body Composition in Meat Animals written by D. Lister and published by Elsevier Science & Technology. This book was released on 1984 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : National Research Council
Publisher : National Academies Press
ISBN 13 : 0309037956
Total Pages : 384 pages
Book Rating : 4.3/5 (9 download)
Download or read book Designing Foods written by National Research Council and published by National Academies Press. This book was released on 1988-02-01 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt: This lively book examines recent trends in animal product consumption and diet; reviews industry efforts, policies, and programs aimed at improving the nutritional attributes of animal products; and offers suggestions for further research. In addition, the volume reviews dietary and health recommendations from major health organizations and notes specific target levels for nutrients.
Author : Brock L. Frieden
Publisher :
ISBN 13 :
Total Pages : 422 pages
Book Rating : 4.:/5 (56 download)
Download or read book Effect of Different Implant Regimes on the Accuracy of Ultrasound for Prediction of Body Composition Characteristes in Beef Cattle written by Brock L. Frieden and published by . This book was released on 2002 with total page 422 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 88 pages
Book Rating : 4.:/5 (89 download)
Download or read book Ultrasonic Techniques for Describing Carcass Characteristics in Live Cattle written by and published by . This book was released on 1982 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Richard Gregory Tait
Publisher :
ISBN 13 :
Total Pages : 208 pages
Book Rating : 4.:/5 (518 download)
Download or read book Prediction of Retail Product and Trimmable Fat in Beef Cattle Using Ultrasound Or Carcass Data written by Richard Gregory Tait and published by . This book was released on 2002 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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 recorded. Percent retail product from the four primals was then expressed as a percentage of side weight. 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) percent kidney, pelvic, and heart fat (CKPH). Live animal ultrasound measures collected within seven days prior to harvest 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 biceps femoris in the rump(reference point) (URFAT), 5) depth of gluteus medius under the reference point (URDEPTH), and 6) area of gluteus medius anterior to the reference point (URAREA). A stepwise regression was performed to develop models to predict percent retail product from the four primals based on carcass measures or ultrasound measures, and comparisons were made between the models, Significant measures (P
Author : William Richey Thompson
Publisher :
ISBN 13 :
Total Pages : 110 pages
Book Rating : 4.:/5 (319 download)
Download or read book Influence of Body Composition on Winter Energy Requirement and Estimators of Body Composition for Beef Cows written by William Richey Thompson and published by . This book was released on 1981 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Kali Noelle Gates
Publisher :
ISBN 13 :
Total Pages : 94 pages
Book Rating : 4.:/5 (89 download)
Download or read book The Relationship of Body Condition Score with Subcutaneous and Internal Fat Measurements by Real-time Ultrasound in Crossbred Beef Cows written by Kali Noelle Gates and published by . This book was released on 2011 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt:
