scholarly journals Effects of gender of dairy or beef cattle and the number of pair of permanent incisors on carcass traits

2018 ◽  
Vol 192 ◽  
pp. 03050
Author(s):  
Kunya Tuntivisoottikul ◽  
Rutcharin Limsupavanich
Keyword(s):  
Beef Cattle ◽  
Dairy Cattle ◽  
Statistical Model ◽  
Carcass Traits ◽  
Descriptive Statistics ◽  
Marbling Score ◽  
Slaughter Weight

Effects of group of cattle (gender of dairy or beef cattle) and number of pair of permanent incisors (0-4 pairs) on carcass traits were investigated. Data collected from 2,059 carcasses were obtained from beef cattle cooperative in 2016. Carcass traits included slaughter weight (wt.), hot carcass wt., percentage of hot or chilled carcass wt., chilling loss, skin wt., and marbling score. Factors included group of cattle and number of pair of permanent incisors observed in each cattle group, while slaughter wt. was a co-variable in the statistical model. Descriptive statistics were used to analyze marbling score. Results showed that group of cattle affected slaughter wt., hot carcass wt., percentage of hot or chilled carcass wt., skin wt. (P<0.0001), and chilling loss (P<0.05). Number of pair of permanent incisors within each cattle group affected all carcass traits (p<0.05), except chilling loss (p>0.05). Female and male beef cattle in all ages had higher hot carcass wt. and percentage of hot or chilled carcass wt. than female and male dairy cattle. The highest marbling score of 5 was found in female and male beef and female dairy cattle with 4 pairs of permanent incisors. However, majority of cattle had marbling score 2.

Heritability and correlation estimates of Warner-Bratzler shear force and carcass traits from Angus-, Charolais-, Hereford-, and Simmental-sired cattle

2004 ◽  
Vol 84 (4) ◽  
pp. 599-609 ◽  
Author(s):  
J. A. Minick ◽  
M. E. Dikeman ◽  
E. J. Pollak ◽  
D. E. Wilson
Keyword(s):  
Beef Cattle ◽  
Key Words ◽  
Shear Force ◽  
Genetic Parameters ◽  
Carcass Traits ◽  
Genetic Correlations ◽  
Carcass Weight ◽  
Carcass Quality ◽  
Marbling Score ◽  
Ribeye Area

Heritabilities and correlations of Warner-Bratzler shear force (WBSF), marbling score (MS), hot carcass weight (HCW),12–13th rib-fat (FAT), and ribeye area (REA) were calculated from 3360 Angus-, Charolais-, Hereford-, and Simmental-sired cattle in the C attleman’s Beef Board Carcass Merit Project. The heritabilities (± SE) for WBSF, MS, HCW, FAT, and REA were 0.34 ± 0.25, 0.43 ± 0.28, 0.73 ± 0.35, 0.16 ± 0.19, and 0.56 ± 0.31 in Angus; 0.43 ± 0.22, 0.30 ± 0.18, 0.21 ± 0.16, 0.35 ± 0.20, and 0.23 ± 0.16 in Charolais; 0.12 ± 0.11, 0.55 ± 0.22, 0.20 ± 0.14, 0.25 ± 0.15 and 0.34 ± 0.17 in Hereford; and 0.16 ± 0.14, 0.44 ± 0.20, 0.45 ± 0.20, 0.23 ± 0.16, and 0.30 ± 0.18 in Simmental. The genetic correlations, averaged across analysis type, for WBSF-MS, WBSF-HCW, WBSF-FAT, WBSF-REA, MS-HCW, MS-FAT, MS-REA, HCW-FAT, HCW-REA, and FAT-REA were -0.17, 0.32, -0.23, 0.30, 0.10, -0.17, 0.39, -0.15, 0.68, and -0.86 in Angus; -0.42, 0.77, 0.52, -0.05, -0.44, -0.22, -0.19, 0.66, -0.05, and -0.24 in Charolais; -0.43, -0.04, -0.33, 0.09, 0.08, 0.79, -0.14, -0.26, 0.50, and -0.38 in Hereford; and 0.55, 0.08, 0.62, -0.08, 0.30, 0.61, -0.14, 0.06, 0.65, and -0.48 in Simmental. Key words: Beef cattle, genetic parameters, carcass quality, tenderness

Effects of production system and slaughter weight endpoint on growth performance, carcass traits, and beef quality from conventionally and naturally produced beef cattle

2015 ◽  
Vol 95 (1) ◽  
pp. 37-47 ◽  
Author(s):  
D. L. Glanc ◽  
C. P. Campbell ◽  
J. Cranfield ◽  
K. C. Swanson ◽  
I. B. Mandell
Keyword(s):  
Beef Cattle ◽  
Growth Performance ◽  
Production System ◽  
Average Daily Gain ◽  
Carcass Traits ◽  
Eating Quality ◽  
Beef Quality ◽  
Slaughter Weight ◽  
Natural Production ◽  
Conventional Production

Glanc, D. L., Campbell, C. P., Cranfield, J., Swanson, K. C. and Mandell, I. B. 2015. Effects of production system and slaughter weight endpoint on growth performance, carcass traits, and beef quality from conventionally and naturally produced beef cattle. Can. J. Anim. Sci. 95: 37–47. Effects of production system and slaughter endpoint on performance, carcass traits, and beef quality were investigated in 64 Simmental cross steers (minimum 75% Continental breeding). Cattle were allocated to: (1) conventional production system based on use of implants and dietary ionophores or (2) natural production system in which no implants or ionophores were used. Within each production system, cattle were allocated for slaughter at 545 or 636 kg liveweight. Steers were fed an 85.5% concentrate diet based on high-moisture corn, soybean meal, and alfalfa silage. Average daily gain tended to be greater (P<0.06) in conventional production system cattle, while there was a trend (P<0.08) for production system by endpoint interactions for dry matter intake and gain to feed. Natural production system cattle tended to have greater (P<0.08) marbling and percent intramuscular fat (%IMF) with lower (P<0.09) longissimus shear force, while production system by endpoint interactions were present (P ≤ 0.03) for%IMF and carcass lean composition via rib dissection. At-home consumer evaluation of longissimus muscle steaks found tenderness, juiciness, flavour, and overall acceptability rankings were greater (P<0.01) for steaks slaughtered from heavier cattle (636 vs. 545 kg liveweight). Marketing cattle at lighter slaughter weights may have benefits for performance at the expense of eating quality.

scholarly journals THI Modulation of Genetic and Non-genetic Variance Components for Carcass Traits in Hanwoo Cattle

2020 ◽  
Vol 11 ◽  
Author(s):  
Yoonji Chung ◽  
Seung Hwan Lee ◽  
Hak-Kyo Lee ◽  
Dajeong Lim ◽  
Julius van der Werf ◽  
...  
Keyword(s):  
Beef Cattle ◽  
Carcass Traits ◽  
Reaction Norm ◽  
Genetic Effects ◽  
Additive Models ◽  
Residual Effects ◽  
Environment Interaction ◽  
Marbling Score ◽  
Muscle Area ◽  
Eye Muscle

The phenotype of carcass traits in beef cattle are affected by random genetic and non-genetic effects, which both can be modulated by an environmental variable such as Temperature-Humidity Index (THI), a key environmental factor in cattle production. In this study, a multivariate reaction norm model (MRNM) was used to assess if the random genetic and non-genetic (i.e., residual) effects of carcass weight (CW), back fat thickness (BFT), eye muscle area (EMA), and marbling score (MS) were modulated by THI, using 9,318 Hanwoo steers (N = 8,964) and cows (N = 354) that were genotyped on the Illumina Bovine SNP50 BeadChip (50K). THI was measured based on the period of 15–45 days before slaughter. Both the correlation and the interaction between THI and random genetic and non-genetic effects were accounted for in the model. In the analyses, it was shown that the genetic effects of EMA and the non-genetic effects of CW and MS were significantly modulated by THI. No significant THI modulation of such effects was found for BFT. These results highlight the relevance of THI changes for the genetic and non-genetic variation of CW, EMA, and MS in Hanwoo beef cattle. Importantly, heritability estimates for CW, EMA, and MS from additive models without considering THI interactions were underestimated. Moreover, the significance of interaction can be biased if not properly accounting for the correlation between THI and genetic and non-genetic effects. Thus, we argue that the estimation of genetic parameters should be based on appropriate models to avoid any potential bias of estimates. Our finding should serve as a basis for future studies aiming at revealing genotype by environment interaction in estimation and genomic prediction of breeding values.

scholarly journals Genomic Prediction Using Alternative Strategies of Weighted Single-Step Genomic BLUP for Yearling Weight and Carcass Traits in Hanwoo Beef Cattle

Genes ◽  
2021 ◽  
Vol 12 (2) ◽  
pp. 266
Author(s):  
Hossein Mehrban ◽  
Masoumeh Naserkheil ◽  
Deuk Hwan Lee ◽  
Chungil Cho ◽  
Taejeong Choi ◽  
...  
Keyword(s):  
Quantitative Trait Loci ◽  
Beef Cattle ◽  
Genomic Prediction ◽  
Quantitative Trait ◽  
Carcass Traits ◽  
Best Linear Unbiased Prediction ◽  
Single Step ◽  
Linear Unbiased Prediction ◽  
Single Nucleotide ◽  
Best Linear Unbiased

The weighted single-step genomic best linear unbiased prediction (GBLUP) method has been proposed to exploit information from genotyped and non-genotyped relatives, allowing the use of weights for single-nucleotide polymorphism in the construction of the genomic relationship matrix. The purpose of this study was to investigate the accuracy of genetic prediction using the following single-trait best linear unbiased prediction methods in Hanwoo beef cattle: pedigree-based (PBLUP), un-weighted (ssGBLUP), and weighted (WssGBLUP) single-step genomic methods. We also assessed the impact of alternative single and window weighting methods according to their effects on the traits of interest. The data was comprised of 15,796 phenotypic records for yearling weight (YW) and 5622 records for carcass traits (backfat thickness: BFT, carcass weight: CW, eye muscle area: EMA, and marbling score: MS). Also, the genotypic data included 6616 animals for YW and 5134 for carcass traits on the 43,950 single-nucleotide polymorphisms. The ssGBLUP showed significant improvement in genomic prediction accuracy for carcass traits (71%) and yearling weight (99%) compared to the pedigree-based method. The window weighting procedures performed better than single SNP weighting for CW (11%), EMA (11%), MS (3%), and YW (6%), whereas no gain in accuracy was observed for BFT. Besides, the improvement in accuracy between window WssGBLUP and the un-weighted method was low for BFT and MS, while for CW, EMA, and YW resulted in a gain of 22%, 15%, and 20%, respectively, which indicates the presence of relevant quantitative trait loci for these traits. These findings indicate that WssGBLUP is an appropriate method for traits with a large quantitative trait loci effect.

Seroprevalence of Toxoplasma gondii in Beef Cattle and Dairy Cattle in Northeast China

2012 ◽  
Vol 9 (7) ◽  
pp. 579-582 ◽  
Author(s):  
Jian-Hua Qiu ◽  
Chun-Ren Wang ◽  
Xu Zhang ◽  
Zhong-Hua Sheng ◽  
Qiao-Chen Chang ◽  
...  
Keyword(s):  
Toxoplasma Gondii ◽  
Beef Cattle ◽  
Dairy Cattle ◽  
Northeast China

Influencing Perceptions in Non-animal Science Majors: Impact of a High Enrollment, Asynchronous Core Curriculum Science General Animal Science Course

2021 ◽  
Vol 99 (Supplement_2) ◽  
pp. 45-45
Author(s):  
Sushil Paudyal ◽  
Leslie Frenzel ◽  
Kathrin Dunlap
Keyword(s):  
Beef Cattle ◽  
Dairy Cattle ◽  
Student Perceptions ◽  
Core Curriculum ◽  
Small Animal ◽  
Likert Scale ◽  
Animal Production ◽  
Science Majors ◽  
Animal Science ◽  
Production Industry

Abstract Perceptions of animal production industry and background knowledge of animal science vary greatly amongst students, particularly non-animal science majors. The objective was to assess the influence of a large asynchronous core curriculum science course, General Animal Science, on non-major student perceptions and knowledge of animal science. Student surveys (n = 634) were conducted (preceding and subsequent to course completion. The majority (57.66%) indicated no agriculture background. Among those reporting an agriculture background, 47.82% indicated having animal industry experience, and a mean score of 4.22 [SD 2.96; Likert scale (0–10)] evaluating perceived strength of their agriculture background. Of respondents, 34.77% indicated experience with companion animal, 13.6% beef cattle, 12.5% equine, 10.4% sheep and goats, 8.01% swine, 9.7% poultry, and 3.5% dairy cattle. Post-course responses were received from 71% of the enrolled students (n=541), and comprised of freshman (0–29 credit hours; n = 81), sophomore (30–59, n = 142), junior (60–89; n = 141), senior (90+; n = 48). Respondents indicated a mean score of 7.51 [SD 2.47; Likert scale (0–10)] that this course increased their interest in animal science and indicated a mean score of 6.71 (SD 2.97) on motivation to further their animal science knowledge. Students reported they felt more informed in beef cattle (40.10%), dairy cattle (15.05%), equine (14.56%), poultry (10.92%), swine (4.61%), and small animal (6.55%) production industries. Respondents (98.06%) indicated increased confidence as an educated consumer of animal products and a majority (92.2%) agreed this course helped eliminate misconceptions related to the animal production industry. In addition, 34.22% responded extremely likely, and 50.73% somewhat likely to utilize course knowledge in their everyday life. We concluded that enrollment in the asynchronous core curriculum science course, General Animal Science, reduced misconceptions related to animal production and increased knowledge of and appreciation of the animal production industry in non-animal science majors.

scholarly journals Genotype by environment interaction on growth and carcass traits in beef cattle in the tropics

2010 ◽  
Vol 1 (2) ◽  
pp. 372-373 ◽  
Author(s):  
Fabrizio Assenza ◽  
Alberto Menendez Buxadera ◽  
Jean-Luc Gourdine ◽  
Alain Farant ◽  
Bruno Bocage ◽  
...  
Keyword(s):  
Beef Cattle ◽  
Carcass Traits ◽  
Genotype By Environment Interaction ◽  
Environment Interaction ◽  
Genotype By Environment ◽  
The Tropics

Relative performance of white clover (Trifolium repens) cultivars and experimental synthetics under rotational grazing by beef cattle, dairy cattle and sheep

2021 ◽  
Vol 72 (11) ◽  
pp. 926
Author(s):  
M. Z. Z. Jahufer ◽  
J. L. Ford ◽  
G. R. Cousins ◽  
D. R. Woodfield
Keyword(s):  
Beef Cattle ◽  
Dairy Cattle ◽  
White Clover ◽  
Trifolium Repens ◽  
Genotypic Variation ◽  
Relative Performance ◽  
Seasonal Growth ◽  
Sheep Grazing ◽  
Rotational Grazing ◽  
Average Performance

Assessment of the relative performance of white clover (Trifolium repens L.) cultivars, using multi-year and multi-location seasonal growth trials, is key to identification of material with specific and broad adaptation. This paper is based on a multi-year and multi-location study of 56 white clover entries comprising 14 commercial cultivars and 42 experimental synthetic lines evaluated for seasonal growth under rotational grazing across four locations in New Zealand over 4years. The four locations (and animals grazing) were: Kerikeri (beef cattle), Aorangi (beef cattle), Ruakura (dairy cattle), Lincoln (sheep). Significant (P&lt;0.05) genotypic variation among the 56 entries, and genotype × year, genotype× location and genotype× season interactions, were estimated. We were able to identify cultivars and experimental synthetics with specific and broad adaptation to the three grazing management types. Cvv. AberDance, Apex, Demand, Prestige, Quartz and Riesling, with leaf size ranging from small to medium–large, showed highly above-average performance under sheep grazing. Synthetic lines 15 and 45 also had highly above-average performance under sheep grazing. Cvv. Legacy and Kopu II showed above-average performance under cattle and dairy grazing. Synthetics 15, 48, 49, 44, 22 and 18 and cv. Quartz had above-average performance under all three grazing managements. Synthetics 27, 33 and 38 had highly above-average performance across all three grazing managements and were superior to all 14 cultivars evaluated. Several of these superior synthetics are being tested across multiple grazing environments. Among the 14 cultivars evaluated, Legacy and Quartz showed superior seasonal growth performance across the three grazing managements. Quartz is being evaluated in several on-farm trials across temperate regions of the world.

scholarly journals Investigation of the association of two candidate genes (H-FABP and PSMC1) with growth and carcass traits in Qinchuan beef cattle from China

2014 ◽  
Vol 13 (1) ◽  
pp. 1876-1884 ◽  
Author(s):  
W. Liang ◽  
H.L. Zhang ◽  
Y. Liu ◽  
B.C. Lu ◽  
X. Liu ◽  
...  
Keyword(s):  
Beef Cattle ◽  
Candidate Genes ◽  
Carcass Traits
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