Ultrasonography as a predicting tool for carcass traits of young Nellore crossbred bulls in a feedlot system

Ultrasound technology provides a oportunity to quickly and economically estimate carcass atributes on the live animal (Brethour, 2000). In general, this technology has been used to detect variation for fat depth and ribeye area (longissimus dorsi muscle) in performance tested yearling bulls at several countries. In the present study, real time ultrasonography was used to predict the ribeye area (RA) and the subcutaneous fat thickness (FT) in Nellore crossbred.

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PSIII-8 Sire breed differences for carcass attributes in feedlot steers using ultrasound technology

Journal of Animal Science ◽

10.1093/jas/skab235.534 ◽

2021 ◽

Vol 99 (Supplement_3) ◽

pp. 291-291

Author(s):

Harley Buie ◽

Noah P Jesko

Keyword(s):

Pearson Correlation ◽

Marbling Score ◽

Live Animal ◽

Feedlot Steers ◽

Significant Difference ◽

Ultrasound Measurements ◽

Ribeye Area ◽

Ultrasound Technology ◽

Fat Thickness ◽

Sire Breed

Abstract Live animal ultrasound measurements were taken on thirty-two feedlot steers and heifers for estimation of carcass endpoints including 12th rib fat thickness (FTU), ribeye area (REAU) and intramuscular fat (%FatU). Ultrasound measurements were collected by an inexperienced technician using an Aloka 500 ultrasound unit using Beef Image Analysis (BIA) software. The objective of the study was to evaluate carcass differences of four sire breed types including Angus (n = 11), Ultrablack (n = 6), Nelore (n = 6), Braunvieh (n = 1) and Angus X Nelore X Braunvieh hybrid (n = 8). Carcass data collected at harvest included 12th rib fat Thickness (FTC), Ribeye area (REAC), marbling score (MS), Yield Grade (YG), and Quality Grade (QG). The data were analyzed using SAS to determine breed effects. Means for FTU, FTC, REAU, REAC, %FatU and MS were 0.59 cm, 0.57 cm, 90.80 cm2, 83.53 cm2, 4.83%, and 483.75, respectively. There was no significant difference (P > 0.05) in YG and FT due to breed of sire. However, there was a trend for sire breed for ribeye area (P = 0.0728) for Angus X Nelore X Braunvieh cross and MS (P = 0.0786) for Ultrablack. Pearson correlation values between FTU and FTC, REAU and REAC, and %FatU and MS were 0.1217 (P = 0.05068), 0.3545 (P = .0465) and 0.5161 (P = 0.0025), respectively. These data suggest little differences existed in carcass attributes between various sire breeds out of a set of crossbred commercial cows.

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Growth performance and carcass traits of young nellore bulls supplemented with or without addition of lipids

Bioscience Journal ◽

10.14393/bj-v36n2a2020-42273 ◽

2020 ◽

Vol 36 (2) ◽

Author(s):

Clóvis Carlos Silveira Filho ◽

Carlos Augusto de Alencar Fontes ◽

Elizabeth Fonsêca Processi ◽

Laila Cecília Ramos Bendia ◽

Paulo Roberto Silveira Pimentel ◽

...

Keyword(s):

Growth Performance ◽

Dry Matter ◽

Reference Group ◽

Carcass Traits ◽

Subcutaneous Fat ◽

Panicum Maximum ◽

Concentrate Supplementation ◽

Average Intake ◽

Subcutaneous Fat Thickness ◽

Fat Thickness

The aim of research was to evaluate the performance and characteristics of the carcasses of Nellore young bulls in grazing supplemented with or without addition of lipids. Twenty–eight young bulls, 301 ± 5.8 kg in body weight, which four constituted the reference group and the twenty-four remnants were used in the experiment and randomly distributed into four groups according to treatment: only Panicum maximum cv. Mombasa grass; Mombasa grass with concentrated supplementation based on soybean meal; Mombasa grass with concentrate containing lipids from soybean oil; and Mombasa grass with concentrate containing lipids derived from soybean grains. The total dry matter intake of the animals fed only Mombasa grass did not differ from the average intake of the three treatments supplemented with concentrate. There were no differences (P>0.05) between Mombasa grass and diets with concentrate, supplementation with or without lipid and lipids sources in the carcass traits, gastrointestinal tract, organs and loin eye area. Nellore bulls receiving concentrate increased subcutaneous fat thickness compared with bulls that received only Mombasa grass. Nellore young bulls fed Mombasa grass only, supplemented with or without addition of lipids were similar regarding growth performance and carcass traits.

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THE USE OF UREA DILUTION AND ULTRASONIC BACKFAT THICKNESS TO PREDICT THE CARCASS COMPOSITION OF LIVE LAMBS AND CATTLE

Canadian Journal of Animal Science ◽

10.4141/cjas82-043 ◽

1982 ◽

Vol 62 (2) ◽

pp. 371-379 ◽

Cited By ~ 11

Author(s):

S. D. M. JONES ◽

J. S. WALTON ◽

J. W. WILTON ◽

J. E. SZKOTNICKI

Keyword(s):

Subcutaneous Fat ◽

Carcass Composition ◽

Multiple Regression Equation ◽

Lean Tissue ◽

Live Animal ◽

Subcutaneous Fat Thickness ◽

Fat Thickness ◽

Total Fat ◽

The Relationship ◽

Lean Weight

Thirty-eight lambs (22 rams, 16 ewes), 25 Holstein cows and 30 steers were evaluated ultrasonically for subcutaneous fat thickness. Urea space was also estimated, using the dilution principle, by a single injection of a known amount of urea and taking a single blood sample 12 min later. All lambs and cattle were slaughtered within 2 days and the half-carcasses were separated into fat, lean and bone. Urea space (R2 = 0.10) and fat thickness (R2 = 0.18) in lambs were poorly related to the weight of half-carcass lean tissue. Neither urea space nor fat thickness improved the level of explained variation in half-carcass lean tissue weight over that explained by liveweight alone (R2 = 0.73). Urea space showed a larger association with half carcass lean weight in cows (R2 = 0.55) than in steers (R2 = 0.14), but again did not improve the relationship provided by liveweight alone (R2 = 0.60). Fat thickness provided nonsignificant regressions (P < 0.05) with half-carcass lean weight both in cows and in steers. Liveweight was the dominant independent variable (R2 = 0.33) for predicting total fat in lamb half-carcasses; urea space (R2 = 0.08) and fat thickness (R2 = 0.13) did not improve the prediction given by liveweight alone. Fat thickness was poorly related to total fatness both in steers (R2 = 0.12) and in cows (nonsignificant regression). A multiple regression equation combining fat thickness and liveweight provided the best prediction of half-carcass fat in cows, whereas a similar equation with the addition of urea space gave the best prediction of half-carcass fat in steers. The measurement of urea space and fat thickness to predict the weight of carcass tissues (lean, fat) in live lambs and cattle over the weight (41.9 + 9.7 kg(SD) lambs, 624 ± 62.8 kg cows and 466 ± 63.2 kg steers) and fatness (19.9 ± 3.27% (SD) lambs, 21.9 ± 2.18% cows and 20.9 ± 3.98% steers) ranges studied was of limited value. Key words: Urea dilution, ultrasound, live animal evaluation, carcass composition

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Effect of 8 Weeks Un-tact Pilates Home Training on Body Composition, Abdominal Obesity, Pelvic Tilt and Strength, Back Pain in Overweight Women after Childbirth

Exercise Science ◽

10.15857/ksep.2021.30.1.61 ◽

2021 ◽

Vol 30 (1) ◽

pp. 61-69

Author(s):

Ah-Hyun Hyun ◽

Joon-yong Cho

Keyword(s):

Body Composition ◽

Back Pain ◽

Real Time ◽

Abdominal Obesity ◽

Pelvic Tilt ◽

Subcutaneous Fat ◽

Postpartum Women ◽

Index Test ◽

Subcutaneous Fat Thickness ◽

Fat Thickness

Purpose: This study aims to observe the effects of at home Pilates exercise, using a real-time web program in postpartum women where measurements of body composition, abdominal obesity, pelvic tilt, back pain and Oswestry Disability Index will be taken.Methods: Subjects included postpartum women under the age of 45 that were registered at the C Cultural Women’s Center in Bundang, Gyeonggi-do. All subjects were within 1 year of childbirth, had no medical opinion and were not receiving medication. A total of 16 people were enrolled in this experiment, which consisted of a Pilates Exercise group (EX, n=8) and a control group (CON, n=8). Measurements of body composition, abdominal subcutaneous fat thickness and circumference, pelvic tilt, pelvic strength, and back pain index were all assessed prior to being exposed to experimental measures. After 8 weeks of un-tact home Pilates exercise, a followup examination was conducted to observe the group-specific changes.Results: The group that participated in the un-tact home Pilates exercise showed a decrease in body fat, BMI, and visceral fat postpartum. Abdominal obesity tests showed a significant reduction in subcutaneous fat thickness, abdominal and hip circumference. The pelvic tilt test showed a reduction in the pelvic slope of the EX-group. Finally, the Oswestry Disabililty Index test showed the total score of the EX-group had decreased, confirming that Pilates exercise in this study was effective for back pain.Conclusions: Thus, un-tact home Pilates exercise using a real time web program is an effective intervention that can be used to prevent postpartum obesity by reducing abdominal and total body adiposity postpartum, assisting pelvic function, and improving muscle strength while also reducing back pain.

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Comparison of Holstein, Charbray, and Zebu Bulls for beef production under rotational grazing II. Offal components and carcass composition

The Journal of Agriculture of the University of Puerto Rico ◽

10.46429/jaupr.v81i3-4.3635 ◽

1969 ◽

Vol 81 (3-4) ◽

pp. 115-124

Author(s):

Américo Casas ◽

Danilo Cianzio ◽

Aixa Rivera

Keyword(s):

Subcutaneous Fat ◽

Biceps Femoris ◽

Carcass Composition ◽

Lower Amount ◽

Longissimus Dorsi ◽

Subcutaneous Fat Thickness ◽

Holstein Bulls ◽

Fat Thickness ◽

Stomach Weight ◽

Psoas Major

After two complete grazing trials, 47 Holstein, Charbray and Zebu (mostly Brahman) bulls were processed for offal components, carcass traits and composition comparisons at an average liveweight (LW) of 545 kg. At the same LW the Holstein bulls had a significantly higher (P < 0.05) weight for the head (3.33% of LW), feet (2.47% of LW), liver (1.11% of LW), kidneys (1.29% of LW) and intestines (5.18% LW) than the Zebu and Charbray bulls, and a significantly longer leg (53.0 vs. 48.90 cm; P < 0.05) than the Charbray bulls. The Zebu bulls had the heaviest hide (P < 0.05) and smallest stomach weight (P < 0.05). The carcasses of the Holstein bulls had a significantly higher (P < 0.05) bone percentage (21.60 vs. 16.63, 17.46%) and a lower amount of fat than the Charbray and Zebu bulls, respectively. Charbray bulls presented greater loin eye area, total amount of muscle, muscle to bone+fat ratio and weight and percentage of the Biceps femoris, Gluteus, and Cuadriceps femoris muscles in the left-hindquarter (LH), than the Zebu and Holstein bulls (P < 0.05). Charbray and Zebu bulls showed greater (P < 0.05) thickness of the round (26.03, 25.85, vs. 24.03 cm), hot carcass and LH weight, total dissectible fat, dressing percentage, muscle to bone ratio, and weight of the Semimembranosus, Psoas major, Longissimus dorsi and Semitendinosus muscles than the Holstein bulls (P < 0.05). No significant differences (P > 0.05) were found among breeds for subcutaneous fat thickness and for the weights of fascia/tendon, trimming, carcass shrinkage, and for the forequarter weight and percentage of left side.

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