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Author : Cheyne Hughes
Publisher :
ISBN 13 :
Total Pages : 96 pages
Book Rating : 4.:/5 (774 download)
Download or read book The Use of Real-time Ultrasound to Assess Carcass Traits and Internal Fat in Beef Cattle written by Cheyne Hughes and published by . This book was released on 2011 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Fabiano Rodrigues da Cunha Araujo
Publisher :
ISBN 13 :
Total Pages : 134 pages
Book Rating : 4.:/5 (67 download)
Download or read book The Use of Real-time Ultrasound to Estimate Variance Components for Growth and Carcass Traits in Nelore Cattle written by Fabiano Rodrigues da Cunha Araujo and published by . This book was released on 2003 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : David Albert Duello
Publisher :
ISBN 13 :
Total Pages : 396 pages
Book Rating : 4.:/5 (296 download)
Download or read book The Use of Real-time Ultrasound Measurements to Predict Composition and Estimate Genetic Parameters of Carcass Traits in Live Beef Cattle written by David Albert Duello and published by . This book was released on 1993 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Flavio Ribeiro
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (664 download)
Download or read book The Relationship of Feed Efficiency with Performance, Ultrasound, Carcass and Non-carcass Traits in Beef Cattle written by Flavio Ribeiro and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The first objective was to estimate total internal fat in beef cattle based on a technique that measures kidney fat (uKFd) using real-time ultrasound (RTU). Data were obtained from 109 cattle from four studies, and animals were scanned 7 d preslaughter for uKFd and ultrasound backfat thickness. At slaughter carcass kidney fat depth (cKFd), KPH weight, and total internal fat were measured. The second objective was to characterize residual feed intake (RFI) in finishing cattle fed high grain diets and to examine the relationships with growth, ultrasound, carcass, non-carcass, and tenderness traits in two studies involving Santa Gertrudis (n = 114) steers, and Angus bulls (n = 16) and heifers (n = 16). In both experiments, RFI was calculated as the difference between actual DMI and predicted DMI. Results for the first objective indicated that RTU can be used to estimate cKFd, KPH weight and total internal fat (IFAT). Prediction equations developed to predict IFAT had R2 that ranged from 0.65 to 0.97 (P
Author : Mapula Magdalina Seroba
Publisher :
ISBN 13 :
Total Pages : 114 pages
Book Rating : 4.:/5 (794 download)
Download or read book The Use of Real Time Ultrasound Measurements for the Improvement of Carcass Characteristics in Beef Cattle written by Mapula Magdalina Seroba and published by . This book was released on 2006 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher : UCANR Publications
ISBN 13 : 1601073097
Total Pages : 23 pages
Book Rating : 4.6/5 (1 download)
Download or read book Understanding and Improving Beef Cattle Carcass Quality written by and published by UCANR Publications. This book was released on 2004 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt: Carcass attributes are figuring more into the cow-calf manager's decision-making process and yielding financial rewards. Learn what carcass information means and how it can be used it to improve beef quality.
Author : Scott Patrick Greiner
Publisher :
ISBN 13 :
Total Pages : 262 pages
Book Rating : 4.:/5 (391 download)
Download or read book The Use of Real-time Ultrasound and Live Animal Measurements to Predict Carcass Composition in Beef Cattle written by Scott Patrick Greiner and published by . This book was released on 1997 with total page 262 pages. Available in PDF, EPUB and Kindle. Book excerpt: Carcass measurements were more accurately evaluated with ultrasound in 1994 than in 1995 (P
Author : Alexandria Duit
Publisher :
ISBN 13 :
Total Pages : 102 pages
Book Rating : 4.:/5 (56 download)
Download or read book Use of Serial Real-time Ultrasonic Measurements to Evaluate Relative Changes in Fat Thickness, Ribeye Area, and Percent Intramuscular Fat of Yearling Bulls and Heifers written by Alexandria Duit and published by . This book was released on 2002 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 40 pages
Book Rating : 4.:/5 (932 download)
Download or read book The Application of Real-time Ultrasound to Beef Cattle Breeding and Marketing in Saskatchewan written by and published by . This book was released on 1996 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study assessed the potential value of real-time ultrasound in beef cattle breeding and marketing programs, using ultrasound to obtain measurements of fat depth and ribeye area. Comparisons of duplicate measurements taken on the same animal in the same day were used to indicate whether highly repeatable fat depth and ribeye area measurements could be made in feedlot steers and yearling bulls. The work also evaluated the use of early ultrasound measurements as a predictor of the rate of fat deposition, developed appropriate equations to predict carcass lean meat yields from live ultrasound measurements taken on steers and bulls, and assisted in technology transfer to commercialise this technology.
Author : Thomas Lee Perkins
Publisher :
ISBN 13 :
Total Pages : 366 pages
Book Rating : 4.:/5 (267 download)
Download or read book The Use of Real-time, Linear Array Ultrasound Techniques to Predict Final Carcass Composition in Beef Cattle written by Thomas Lee Perkins and published by . This book was released on 1992 with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Mercedes M. Izquierdo Cebrián
Publisher :
ISBN 13 :
Total Pages : 316 pages
Book Rating : 4.:/5 (374 download)
Download or read book The Use of Real-time-ultrasound to Predict Genetic Attributes of Body Composition Traits in Live Beef Cattle written by Mercedes M. Izquierdo Cebrián and published by . This book was released on 1996 with total page 316 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 : 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 : William Michael Mayfield
Publisher :
ISBN 13 :
Total Pages : 54 pages
Book Rating : 4.:/5 (826 download)
Download or read book Evaluating the Relationship Between Ultrasound-derived Carcass Characteristics and Production Traits in Angus Cattle written by William Michael Mayfield and published by . This book was released on 2012 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt: Profitability in the beef industry is a crucial aspect of management schemes. The overall aim of this study was to determine if carcass ultrasonography in replacement heifers could explain variation in traits such as reproduction, a major factor in beef cattle efficiency and profitability. During a 10-year period, data were obtained from 906 yearling heifers through the use of carcass ultrasonography. The measurements collected included adjusted values for ribeye area (REA), percent intramuscular fat (%IMF), rib fat (RF), and rump fat. A retrospective analysis was performed on data collected and variables were separated into the extreme high and low 25% and the median 50%. Analysis examined whether a relationship existed between reproductive traits (percentage calving at two years of age, age at first calving, first calving interval, lifetime calving interval) and carcass measurements determined by ultrasonography. Age at first calving increased as ribeye area increased (Low REA 731.7±3.1 d; High REA 743.5±3.3 d; P=0.002). Rib fat was also related to age at first calving as heifers in the high grouping were approximately 9 days older at calving (Low RF, 734.5±3.1 d; High RF, 743.7±3.2 d; P=0.008). Expected progeny differences (EPD) for carcass traits such as REA also indicated differences between all three groups for age at first calving (Low REA EPD, 727.4±3.1 d; Med, 736.3±3.2 d; High, 746.2±3.2 d; P
Author : Chad Russell Towns
Publisher :
ISBN 13 :
Total Pages : 28 pages
Book Rating : 4.:/5 (54 download)
Download or read book Use of Real-time Ultrasound for Determining Muscle Growth and Fat Deposition in Beef Cattle with Or Without Hormonal Growth Promotants written by Chad Russell Towns and published by . This book was released on 2002 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Dustin Tyler Dean
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (718 download)
Download or read book Evaluation of Ultrasound and Other Sources of Information to Predict Beef Carcass Traits and Final Carcass Value written by Dustin Tyler Dean and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Purebred Beefmaster steers (n = 160) from five owners were fed at a commercial feedlot in South Texas beginning in November of 2004; 68 steers possessed pedigree information. Beginning in mid-November, steers were individually weighed and evaluated for ultrasound body composition at 56-d intervals by a certified technician. Feeder calf frame (FRM) and muscle (MUS) scores were assigned at initial ultrasound evaluation. Steers were fed and marketed through a lean-based, branded beef programand were harvested in two groups in May and June of 2005 at a commercial beef plant. Analyses were conducted to investigate the ability to predict carcass traits from the different sources of information available on these cattle. Evaluation of carcass traits were investigated using four sets of independent variables referred to as sources A, B, C, or D and ultrasound scan session (1- 4). An analysis included initial weight at first scan session (IWT), FRM and MUS as independent variables through GLM procedures. B analyses utilized ultrasound measures of the longissimus area, intramuscular fat, fat thickness, rump fat, and gluteus medius depth along with IWT as independent variables. Multiple regression was performed on each carcass trait using IWT and ultrasound traits at each scan session. Mallow's CP was used to select a model that best described each carcass trait. C analyses (GLM) utilized variables from A and B analyses combined plus ranch. D analyses (GLM) included variables from C analyses plus sire nested within ranch. Respective R-square values (scan 1 - 4) for marbling score were .02, .04, .05, and. 10 using A information, .14, .17, .42, and .54, using B information, .35, .35, .47, and .55 using C information, and .56, .59, .65, and .76 using D information. R-square values ranged from .34 to .86 for carcass weight, .11 to .77 for fat thickness, .06 to .82 for ribeye area, and .10 to .81 for yield grade. Ultrasound data obtained closer to harvest and increasing amount of data related to genetic and management background showed increased R-square values, but may be best utilized in conjunction with one another to predict carcass traits and final carcass value.
Author : Joshua John Worthington
Publisher :
ISBN 13 :
Total Pages : 74 pages
Book Rating : 4.:/5 (67 download)
Download or read book Relationship Between Ultrasound and Carcass Measures of Charolais-cross Harvest Cattle Using Automated Computer Tracing Software written by Joshua John Worthington and published by . This book was released on 2008 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt: Yearling beef steers (n=86) representing typical Charolais-cross commercial cattle, were evaluated for body composition measures of muscle and fat deposition utilizing real-time ultrasound measurements. Target harvest date was estimated based on 12th rib fat thickness and weight (approximately 250 days on feed). Steers were harvested 35 days after being scanned with an ALOKA 500V ultrasound unit equipped with a UST-5049 transducer. Images were processed chuteside using Beef Image Analysis (BIA) automated software. Images were also saved to the computer hard drive and manually interpreted using Rib-O-Matic non-automated software. Mean scan live weight and carcass weight was 582.89 ± 36.44 kg and 380.8 ± 28.05 kg, respectively. Mean automated chuteside ultrasound fat thickness (AFTU), ribeye area (AREAU) and percent fat (A%FATU) were 0.88 ± 0.22 cm, 97.19 ± 7.45 cm2, 4.16 ± .48 %. Mean manually interpreted ultrasound fat thickness (IFTU), ribeye area (IREAU) and percent fat (I%FATU) were 0.89 ± 0.24 cm, 96.36 ± 7.45 cm2, 4.40 ± .73 %. Mean carcass measures of fat thickness (FTC), ribeye area (REAC) and percent fat (%FATC) were 1.15 ± 0.35 cm, 94.17 ± 7.45 cm2, 3.91 ± .75 %. Favorable pearson correlations between AFTU and FTC, IFTU and FTC, IREAU and REAC, A%FATU and %FATC, I%FATU and %FATC were 0.80, 0.78, 0.47, 0.59 and 0.69, respectively; whereas, the correlation between AREAU and REAC were lower and less significant at 0.22. These coefficients indicate that the relationship between manually interpreted ultrasound images and harvest carcass attributes were high and statistically significant. However, these results indicate that automated chuteside image processing was not as useful a tool in assessing ribeye levels on steers prior to harvest.
