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Scott KG, Wang Y, Bohrer BM, Garcia LG. The effect of live body condition score of beef cows on carcass characteristics, carcass-cutting yields, processor profitability, and tenderness in the longissimus lumborum and psoas major muscles. Transl Anim Sci 2024; 8:txae129. [PMID: 39314920 PMCID: PMC11417012 DOI: 10.1093/tas/txae129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2024] [Accepted: 08/26/2024] [Indexed: 09/25/2024] Open
Abstract
The objective of this study was to investigate the effects of body condition score (BCS) of cull cows on carcass characteristics, carcass-cutting yields, profitability, and tenderness development for the longissimus lumborum and psoas major muscles. During a 5-wk period (May-June 2023), 10 boner cull cows (BCS 4 to 6) and 10 leaner cull cows (BCS 1 to 3) were purchased at a commercial auction market. Live conformation, carcass characteristics, weights of fabricated cuts, tenderness, pH decline, and temperature decline were recorded following slaughter. Carcasses were fabricated into the following cuts: knuckle, inside round, outside round, eye of round, strip loin, top sirloin, bottom sirloin flap, tenderloin, flank, ribeye roll, chuck tender, and brisket, whereas lean was separated into lean and fat components. Beef processor returns for boner cows were calculated as the sum of USDA Carlot Report values for the subprimal cuts, trim, bone, and drop value subtracted by actual live costs at the auction market whereas beef processor returns for leaner cows were calculated as the sum of USDA Carlot Report values for the trim, bone, and drop value subtracted by actual live costs at the auction market. Carcass and merchandizing value parameters were analyzed using a completely randomized design with a fixed effect of classification (leaner or boner) and a random effect of slaughter day. Live weight was used as a covariant for all carcass and merchandizing value parameters due to the pronounced effect of live weight for most parameters. Temperature decline, pH decline, shear force, and cooking loss parameters were analyzed using a completely randomized design with a fixed effect of classification (leaner or boner) and a random effect of slaughter day. Boner cows were found to be heavier for both live and carcass weights when compared with leaner cows. In addition, backfat thickness was 0.39 cm greater (P = 0.03), and ribeye area was 9.17 cm2 (P = 0.05) greater for boner cows compared with leaner cows. This resulted in boner cows yielding larger subprimal cuts and a greater amount of lean trim, which in turn generated more beef processor revenue. However, specific consideration should be provided for profitability as the ability to market subprimal cuts is highly dependent on muscle size, fat deposition, meat quality, and market prices for both boner and leaner cows.
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Affiliation(s)
- Kayla G Scott
- Department of Animal Sciences, The Ohio State University, Columbus OH 43210, USA
| | - Yifei Wang
- Department of Animal Sciences, The Ohio State University, Columbus OH 43210, USA
| | - Benjamin M Bohrer
- Department of Animal Sciences, The Ohio State University, Columbus OH 43210, USA
| | - Lyda G Garcia
- Department of Animal Sciences, The Ohio State University, Columbus OH 43210, USA
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Borders SE, Schwartz TE, Mayer TR, Gehring KB, Griffin DB, Kerth CR, Belk KE, Edwards-Callaway L, Scanga JA, Nair MN, Morgan JB, Douglas JB, Pfeiffer MM, Mafi GG, Harr KM, Lawrence TE, Tennant TC, Lucherk LW, O’Quinn TG, Beyer ES, Bass PD, Garcia LG, Bohrer BM, Pempek JA, Garmyn AJ, Maddock RJ, Carr CC, Pringle TD, Scheffler TL, Scheffler JM, Stelzleni AM, Gonzalez JM, Underwood KR, Harsh BN, Waters CM, Savell JW. National Beef Quality Audit-2022: Transportation, mobility, live cattle, and hide assessments to determine producer-related defects that affect animal welfare and the value of market cows and bulls at processing facilities. Transl Anim Sci 2024; 8:txae033. [PMID: 38616995 PMCID: PMC11015891 DOI: 10.1093/tas/txae033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Accepted: 03/08/2024] [Indexed: 04/16/2024] Open
Abstract
The National Beef Quality Audit (NBQA)-2022 serves as a benchmark of the current market cow and bull sectors of the U.S. beef industry and allows comparison to previous audits as a method of monitoring industry progress. From September 2021 through May 2022, livestock trailers (n = 125), live animals (n = 5,430), and post-slaughter hide-on animals (n = 6,674) were surveyed at 20 commercial beef processing facilities across the U.S. Cattle were transported in a variety of trailer types for an average distance of 490.6 km and a mean transport time of 6.3 h. During transit, cattle averaged 2.3 m2 of trailer space per animal indicating sufficient space was provided according to industry guidelines. Of all trailers surveyed, 55.3% transported cattle from an auction barn to a processing facility. When surveyed, 63.6% of all truck drivers reported to be Beef Quality Assurance certified. The majority (77.0%) of cattle were sound when evaluated for mobility. Mean body condition scores (9-point scale) for beef cows and bulls were 3.8 and 4.4, respectively, whereas mean body condition scores (5-point scale) for dairy cows and bulls were 2.3 and 2.6, respectively. Of the cattle surveyed, 45.1% had no visible live animal defects, and 37.9% had only a single defect. Of defects present in cows, 64.6% were attributed to an udder problem. Full udders were observed in 47.5% of all cows. Nearly all cattle were free of visible abscesses and knots (97.9% and 98.2%, respectively). No horns were observed in 89.4% of all cattle surveyed. Beef cattle were predominantly black-hided (68.9% and 67.4% of cows and bulls, respectively). Holstein was the predominant dairy animal observed and accounted for 85.7% of the cows and 98.0% of the bulls. Only 3.1% of all animals had no form of identification. Findings from the NBQA-2022 show improvements within the industry and identify areas that require continued education and research to improve market cow and bull welfare and beef quality.
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Affiliation(s)
- Sydni E Borders
- Department of Animal Science, Texas A&M AgriLife Research, Texas A&M University, College Station, TX, 77843-2471, USA
| | - Trent E Schwartz
- Department of Animal Science, Texas A&M AgriLife Research, Texas A&M University, College Station, TX, 77843-2471, USA
| | - Thachary R Mayer
- Department of Animal Science, Texas A&M AgriLife Research, Texas A&M University, College Station, TX, 77843-2471, USA
| | - Kerri B Gehring
- Department of Animal Science, Texas A&M AgriLife Research, Texas A&M University, College Station, TX, 77843-2471, USA
| | - Davey B Griffin
- Department of Animal Science, Texas A&M AgriLife Research, Texas A&M University, College Station, TX, 77843-2471, USA
| | - Christopher R Kerth
- Department of Animal Science, Texas A&M AgriLife Research, Texas A&M University, College Station, TX, 77843-2471, USA
| | - Keith E Belk
- Department of Animal Sciences, Colorado State University, Fort Collins, CO, 80523-1171, USA
| | - Lily Edwards-Callaway
- Department of Animal Sciences, Colorado State University, Fort Collins, CO, 80523-1171, USA
| | - John A Scanga
- Department of Animal Sciences, Colorado State University, Fort Collins, CO, 80523-1171, USA
| | - Mahesh N Nair
- Department of Animal Sciences, Colorado State University, Fort Collins, CO, 80523-1171, USA
| | - J Brad Morgan
- Department of Animal Sciences, Colorado State University, Fort Collins, CO, 80523-1171, USA
| | - Jarrett B Douglas
- Department of Animal Sciences, Colorado State University, Fort Collins, CO, 80523-1171, USA
| | - Morgan M Pfeiffer
- Department of Animal Science, Oklahoma State University, Stillwater, OK, 74078, USA
| | - Gretchen G Mafi
- Department of Animal Science, Oklahoma State University, Stillwater, OK, 74078, USA
| | - Keayla M Harr
- Department of Animal Science, Oklahoma State University, Stillwater, OK, 74078, USA
| | - Ty E Lawrence
- Department of Agricultural Sciences, West Texas A&M University, Canyon, TX, 79016, USA
| | - Travis C Tennant
- Department of Agricultural Sciences, West Texas A&M University, Canyon, TX, 79016, USA
| | - Loni W Lucherk
- Department of Agricultural Sciences, West Texas A&M University, Canyon, TX, 79016, USA
| | - Travis G O’Quinn
- Department of Animal Sciences and Industry, Kansas State University, Manhattan, KS, 66506, USA
| | - Erin S Beyer
- Department of Animal Sciences and Industry, Kansas State University, Manhattan, KS, 66506, USA
| | - Phil D Bass
- Department of Animal, Veterinary and Food Sciences, University of Idaho, Moscow, ID, 83844-2330, USA
| | - Lyda G Garcia
- Department of Animal Science, The Ohio State University, Columbus, OH, 43210, USA
| | - Benjamin M Bohrer
- Department of Animal Science, The Ohio State University, Columbus, OH, 43210, USA
| | - Jessica A Pempek
- Department of Animal Science, The Ohio State University, Columbus, OH, 43210, USA
| | - Andrea J Garmyn
- Department of Animal Science, Michigan State University, East Lansing, MI 48824, USA
| | - Robert J Maddock
- Department of Animal Sciences, North Dakota State University, Fargo, ND, 58108-6050, USA
| | - C Chad Carr
- Department of Animal Sciences, University of Florida, Gainesville, FL, 32611-0910, USA
| | - T Dean Pringle
- Department of Animal Sciences, University of Florida, Gainesville, FL, 32611-0910, USA
| | - Tracy L Scheffler
- Department of Animal Sciences, University of Florida, Gainesville, FL, 32611-0910, USA
| | - Jason M Scheffler
- Department of Animal Sciences, University of Florida, Gainesville, FL, 32611-0910, USA
| | | | - John M Gonzalez
- Animal & Dairy Science, University of Georgia, Athens, GA, 30602-6755, USA
| | - Keith R Underwood
- Department of Animal Science, South Dakota State University, Brookings, SD, 57007, USA
| | - Bailey N Harsh
- Department of Animal Sciences, University of Illinois at Urbana - Champaign, Urbana, IL 61801, USA
| | - Crystal M Waters
- College of Agriculture, California State University, Chico, CA, 95929, USA
| | - Jeffrey W Savell
- Department of Animal Science, Texas A&M AgriLife Research, Texas A&M University, College Station, TX, 77843-2471, USA
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Marshall J, Haley D, Levison L, Kelton DF, Miltenburg C, Roche S, Duffield TF. A survey of practices and attitudes around cull cow management by bovine veterinarians in Ontario, Canada. J Dairy Sci 2022; 106:302-311. [DOI: 10.3168/jds.2022-22005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Accepted: 08/05/2022] [Indexed: 11/13/2022]
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Moreira LC, Rosa GJM, Schaefer DM. Beef production from cull dairy cows: a review from culling to consumption. J Anim Sci 2021; 99:skab192. [PMID: 34125214 PMCID: PMC8281100 DOI: 10.1093/jas/skab192] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Accepted: 06/11/2021] [Indexed: 12/21/2022] Open
Abstract
Although more than 3 million head of dairy cows enter the food supply chain in the U.S. every year, research on this topic remains limited and scarce. Meat production from dairy cows is a significant component of beef production, accounting for almost 10% of U.S. commercial beef production. Thus, the purpose of this review is to demonstrate the importance of dairy cows as a beef source, and to provide an overview on topics from farm to meat product-culling, marketing, transportation, welfare, body composition and its relationship with lactation particularities, carcass characteristics, meat quality, and traceability. Current scientific evidence has shown that culling a dairy cow at an appropriate time has beneficial effects on cow welfare and, consequently, cow value. During marketing the dairy cow is visually evaluated for health and factors associated with its expected carcass value; thus, marketing a well-conditioned cow will ensure that the animal is fit for transportation and provides high carcass yield. However, limitations such as low body condition score, lameness or mobility problems, and visual defects remain persistent. Even though beef harvest plants accommodate cows in all body composition states, the current carcass grade system does not reflect the mature cow industry needs. Therefore, improvement of the grading system could maximize carcass utilization and increase cow carcass value by recognizing subprimal cuts that could be merchandised as whole muscle cuts. Lastly, implementation of a traceability system would unify information from the farm to harvest assisting the industry in making further advancements.
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Affiliation(s)
- Ligia C Moreira
- Department of Animal and Dairy Sciences, University of Wisconsin-Madison, Madison, WI, USA
| | - Guilherme J M Rosa
- Department of Animal and Dairy Sciences, University of Wisconsin-Madison, Madison, WI, USA
| | - Daniel M Schaefer
- Department of Animal and Dairy Sciences, University of Wisconsin-Madison, Madison, WI, USA
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The Welfare of Cattle, Sheep, Goats and Pigs from the Perspective of Traumatic Injuries Detected at Slaughterhouse Postmortem Inspection. Animals (Basel) 2021; 11:ani11051406. [PMID: 34069150 PMCID: PMC8156928 DOI: 10.3390/ani11051406] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2021] [Revised: 05/11/2021] [Accepted: 05/11/2021] [Indexed: 11/17/2022] Open
Abstract
Simple Summary The occurrence of traumatic injuries was assessed in cattle, sheep, goats and pigs reared and slaughtered in the Czech Republic. For the purposes of the study, the results of veterinary postmortem examinations at slaughterhouses in the period from 2010 to 2019 were analyzed. In the studied animal species, findings of traumatic lesions were detected at low frequency. The low frequency of traumatic lesions is favorable from the perspective of the welfare of slaughtered animals. In terms of further improvements to animal welfare, it would be desirable to focus on the prevention of trauma in cattle in particular, in which findings of trauma were more frequent than in the other species studied. The category most affected by trauma both to the limbs and body was cows. Abstract The welfare of cattle, pigs, sheep and goats was assessed by measuring trauma detected during veterinary postmortem inspection at slaughterhouses. The subject of this evaluation were all bovine, porcine, ovine and caprine animals slaughtered at Czech slaughterhouses in the monitored period, i.e., a total of 1,136,754 cows, 257,912 heifers, 1,015,541 bulls, 104,459 calves, 586,245 sows, 25,027,303 finisher pigs, 123,191 piglets, 22,815 ewes, 114,264 lambs, 1348 does and 5778 kids. The data on the numbers of traumatic findings were obtained retrospectively from a national veterinary database collecting data from slaughterhouse postmortem examinations. The results showed that findings of trauma were observed at a low frequency in the studied species. Injuries were detected most frequently in cows (1.71%). In contrast, no findings associated with the presence of trauma were recorded in does and kids. From the viewpoint of trauma localization, findings on the limbs were more frequent than findings on the body (p < 0.01). The only exceptions to this were lambs, does and kids, for which there was no statistically significant difference between findings on the limbs and the body (p = 1.00). The results show that housing system (bedding, the presence of slats, floor hardness), transport of animals to the slaughterhouse (moving animals to the vehicle, loading ramps, floors in transport vehicles and the transport of animals itself) and design of the slaughterhouse (unloading ramps, passageways and slaughterhouse floors) have a greater impact on the limbs than the bodies of animals in the majority of species. A difference was also demonstrated in the occurrence of findings of trauma in the limbs and body (p < 0.01) between culled adult animals and fattened animals, namely in cattle and pigs. A difference (p < 0.01) between ewes and lambs was found only in the occurrence of traumatic injury to the limbs. The results showed that fattened animals are affected by the risk of trauma to a lesser extent than both culled adult animals and young animals. Statistically significant differences (p < 0.01) were also found between the studied species and categories of animals. The category most affected from the viewpoint of injury both to the limbs and body was cows. In contrast to cows that are typically reared indoors, the low frequency of traumatic findings was found in small ruminants and in bulls, i.e., animals typically reared outdoors. Assumedly, access to pasture may be beneficial considering the risk of traumatic injury.
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6
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Abbas W, Keel BN, Kachman SD, Fernando SC, Wells JE, Hales KE, Lindholm-Perry AK. Rumen epithelial transcriptome and microbiome profiles of rumen epithelium and contents of beef cattle with and without liver abscesses. J Anim Sci 2021; 98:5973699. [PMID: 33170221 DOI: 10.1093/jas/skaa359] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Accepted: 11/03/2020] [Indexed: 01/04/2023] Open
Abstract
Abscess is the highest cause of liver condemnation and is estimated to cost the beef industry US$64 million annually. Fusobacterium necrophorum, commonly found in the bovine rumen, is the primary bacteria associated with liver abscess in cattle. Theoretically, damage to the rumen wall allows F. necrophorum to invade the bloodstream and colonize the liver. The objective of this study was to determine the changes in gene expression in the rumen epithelium and microbial populations adherent to the rumen epithelium and in the rumen contents of beef cattle with liver abscesses compared with those with no liver abscesses. Rumen epithelial tissue and rumen content were collected from 31 steers and heifers with liver abscesses and 30 animals with no liver abscesses. Ribonucleic acid (RNA) sequencing was performed on the rumen epithelium, and a total of 221 genes were identified as differentially expressed in the animals with liver abscesses compared with animals with no abscesses, after removal of genes that were identified as a result of interaction with sex. The nuclear factor kappa-light-chain enhancer of activated B cells signaling and interferon signaling pathways were significantly enriched in the differentially expressed gene (DEG) set. The majority of the genes in these pathways were downregulated in animals with liver abscesses. In addition, RNA translation and protein processing genes were also downregulated, suggesting that protein synthesis may be compromised in animals with liver abscesses. The rumen content bacterial communities were significantly different from the rumen wall epimural bacterial communities. Permutational multivariate analysis of variance (PERMANOVA) analysis did not identify global differences in the microbiome of the rumen contents but did identify differences in the epimural bacterial communities on the rumen wall of animals without and with liver abscesses. In addition, associations between DEG and specific bacterial amplicon sequence variants of epimural bacteria were observed. The DEG and bacterial profile on the rumen papillae identified in this study may serve as a method to monitor animals with existing liver abscesses or to predict those that are more likely to develop liver abscesses.
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Affiliation(s)
- Waseem Abbas
- Department of Animal Science, University of Nebraska-Lincoln, Lincoln, NE
| | - Brittney N Keel
- U.S. Meat Animal Research Center, USDA, ARS, Clay Center, NE
| | - Stephan D Kachman
- Department of Animal Science, University of Nebraska-Lincoln, Lincoln, NE
| | - Samodha C Fernando
- Department of Animal Science, University of Nebraska-Lincoln, Lincoln, NE
| | - James E Wells
- U.S. Meat Animal Research Center, USDA, ARS, Clay Center, NE
| | - Kristin E Hales
- U.S. Meat Animal Research Center, USDA, ARS, Clay Center, NE
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Moreira LC, Passafaro TL, Schaefer DM, Rosa GJM. The effect of life history events on carcass merit and price of cull dairy cows. J Anim Sci 2021; 99:skaa401. [PMID: 33340041 PMCID: PMC7819634 DOI: 10.1093/jas/skaa401] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Accepted: 12/15/2020] [Indexed: 12/26/2022] Open
Abstract
Cull dairy cows contribute almost 10% of national beef production in the United States. However, different factors throughout the life of dairy cows affect their weight and overall body condition as well as carcass traits, and consequently affect their market price. Therefore, the objectives of this study were: (1) to assess relationships between price ratio and carcass merit of cull dairy cows sold through several sites of an auction market and (2) to investigate the effect of animal life history events and live weight on sale barn price (BP) and price ratio (as a measure of relative price), as an indicator of carcass merit. Data from 4 dairy operations included 3,602 cull dairy cow records during the period of 2015 to 2019. Life history events data were collected from each dairy operation through Dairy Comp software; live weight and price were obtained periodically from the auction market, and the carcass data were provided by a local packing plant. Cow price in dollars per unit of live weight ($/cwt) and price ratio were the 2 outcome variables used in the analyses. Price ratio was created aiming to remove seasonality effects from BP (BP divided by the national average price for its respective month and year of sale). The association between price ratio and carcass merit traits was investigated using canonical correlation analysis, and the effect of life history events on both BP and price ratio was inferred using a multiple linear regression technique. More than 70% of the cows were culled in the first 3 lactations, with an average live weight of 701.5 kg, carcass weight of 325 kg, and dressing percentage of 46.3%. On average, cull cows were sold at $57.0/cwt during the period considered. The canonical correlation between price ratio and carcass merit traits was 0.76, indicating that price ratio reflected carcass merit of cull cows. Later lactations led to lower BP compared with cows culled during the first 2 lactations. Injury, and leg and feet problems negatively affected BP. Productive variables demonstrated that the greater milk production might lead to lower cow prices. A large variation between farms was also noted. In conclusion, price ratio was a good indicator of carcass merit of cull cows, and life history events significantly affected sale BP and carcass merit of cull cows sold through auction markets.
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Affiliation(s)
- Ligia C Moreira
- Department of Animal and Dairy Sciences, University of Wisconsin-Madison, Madison, WI
| | - Tiago L Passafaro
- Department of Animal and Dairy Sciences, University of Wisconsin-Madison, Madison, WI
| | - Daniel M Schaefer
- Department of Animal and Dairy Sciences, University of Wisconsin-Madison, Madison, WI
| | - Guilherme J M Rosa
- Department of Animal and Dairy Sciences, University of Wisconsin-Madison, Madison, WI
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8
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Kline HC, Weller ZD, Grandin T, Algino RJ, Edwards-Callaway LN. From unloading to trimming: studying bruising in individual slaughter cattle. Transl Anim Sci 2020; 4:txaa165. [PMID: 33150305 PMCID: PMC7594242 DOI: 10.1093/tas/txaa165] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Accepted: 09/04/2020] [Indexed: 11/13/2022] Open
Abstract
Livestock bruising is both an animal welfare concern and a detriment to the economic value of carcasses. Understanding the causes of bruising is challenging due to the numerous factors that have been shown to be related to bruise prevalence. While most cattle bruising studies collect and analyze data on truckload lots of cattle, this study followed a large number (n = 585) of individual animals from unloading through postmortem processing at five different slaughter plants. Both visual bruise presence and location was recorded postmortem prior to carcass trimming. By linking postmortem data to animal sex, breed, trailer compartment, and traumatic events at unloading, a rich analysis of a number of factors related to bruise prevalence was developed. Results showed varying levels of agreement with other published bruising studies, underscoring the complexity of assessing the factors that affect bruising. Bruising prevalence varied across different sex class types (P < 0.001); 36.5% of steers [95% confidence interval (CI): 31.7, 41.6; n = 378], 52.8% of cows (45.6, 60.0; 193), and 64.3% of bulls (no CI calculated due to sample size; 14) were bruised. There was a difference in bruise prevalence by trailer compartment (P = 0.035) in potbelly trailers, indicating that cattle transported in the top deck were less likely to be bruised (95% CI: 26.6, 40.4; n = 63) compared to cattle that were transported in the bottom deck (95% CI: 39.6, 54.2; n = 89). Results indicated that visual assessment of bruising underestimated carcass bruise trimming. While 42.6% of the carcasses were visibly bruised, 57.9% of carcasses were trimmed due to bruising, suggesting that visual assessment is not able to capture all of the carcass loss associated with bruising. Furthermore, bruises that appeared small visually were often indicators of larger, subsurface bruising, creating an “iceberg effect” of trim loss due to bruising.
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Affiliation(s)
- Helen C Kline
- Department of Animal Sciences, Colorado State University, Fort Collins, CO
| | - Zachary D Weller
- Department of Statistics, Colorado State University, Fort Collins, CO
| | - Temple Grandin
- Department of Animal Sciences, Colorado State University, Fort Collins, CO
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9
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Grandin T. Livestock Handling at the Abattoir: Effects on Welfare and Meat Quality. MEAT AND MUSCLE BIOLOGY 2020. [DOI: 10.22175/mmb.9457] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
Low-stress handling that uses behavioral principles can help reduce bruises and improve meat quality in cattle, pigs, and sheep. Short-term stressors before stunning, such as electric prod use or jamming in the race, may increase Pale, Soft, Exudative meat in pork and reduce tenderness in beef. Longer term stresses may increase Dark, Firm and Dry meat. Continuous assessment of livestock handling practices is recommended. Handlers should be trained to move small groups of livestock. They also need to understand behavioral principles. The most important ones are flight zone and the point of balance at the shoulder. Calm animals will be easier to handle. Simple economical improvements in races and lairages can help facilitate animal movement through the facility. The movement of livestock can often be improved by (1) installation of a light at a dark stun box entrance, (2) moving lamps to reduce reflections on shiny metal, (3) installation of solid shields to prevent incoming animals from seeing people on moving conveyors, (4) redirection of air flow at the stun box entrance, or (5) in elevated conveyor restrainers, use of a false floor to prevent entering animals from seeing the “visual cliff ” effect. Continuous assessment and supervision are required to maintain low-stress handling methods.
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Kline HC, Weller ZD, Grandin T, Algino RJ, Belk KE, Edwards-Callaway LN. Preliminary Exploration of the Accuracy of Visual Evaluation in Estimating Actual Bruise-Trim Weight of Beef Carcasses. MEAT AND MUSCLE BIOLOGY 2020. [DOI: 10.22175/mmb.9460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
Carcass bruising results in economic loss to the beef industry and is an indicator of a potential animal-welfare concern. The industry relies on visual assessment to determine the prevalence of bruising and to estimate bruise size (weight). This study examines the accuracy of using visual assessment to estimate bruise-trim weight from beef carcasses in a commercial slaughter facility. The removed bruise trim from 105 beef carcasses (84 cow and 21 steer carcasses; hot carcass weight for a subsample [mean ± standard deviation] = 768 ± 157 lb) was visually assessed by one trained observer using a protocol adapted from the National Beef Quality Audit Bruise Key visual assessment tool, and a second observer weighed the bruise trim. These data were used to assess the accuracy of the visual assessment of trim off of a carcass. A total of 68.6% (95% confidence interval: 58.7%, 77.1%) of collected bruise-trim weights were assessed correctly using the modi- fied National Beef Quality Audit Bruise Size Key visual assessment. Because of a limited number of samples in several of the bruise-trim categories, there is not a clear trend in how accuracy of estimation changed with increased bruise weight. These findings suggest that visual assessment of bruise trim may not be providing an accurate estimate of bruise-trim weight. The development of training materials to aid in visual bruise weight/size assessment would be helpful for improving bruise estimates within the cattle industry.
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Affiliation(s)
| | | | | | | | - Keith E. Belk
- Colorado State University Department of Animal Sciences
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11
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Stojkov J, von Keyserlingk MAG, Duffield T, Fraser D. Management of cull dairy cows: Culling decisions, duration of transport, and effect on cow condition. J Dairy Sci 2020; 103:2636-2649. [PMID: 31954571 DOI: 10.3168/jds.2019-17435] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2019] [Accepted: 11/18/2019] [Indexed: 11/19/2022]
Abstract
Many cows culled from dairy farms arrive at livestock markets or abattoirs in compromised condition, but it is unknown whether cows are compromised at the time of culling or deteriorate during the marketing process. This study followed cull cows from farm to abattoir, monitored any deterioration, and tested the effect of providing such information on subsequent culling. For 11 mo, data were collected from 20 dairy farms, livestock markets, and abattoirs. Cows' body condition, lameness, and udder condition (as binary outcomes) were assessed at 4 points: when placed on the culling list, before leaving the farm, at auction, and at the abattoir. Based on the first 5 mo of data (baseline period), information materials were provided to 10 randomly selected farms (Informed treatment), and the other 10 served as a Control. Logistic mixed models were used to test differences in cows' condition at the 4 points of assessment, using the assessment before leaving the farm as a reference value and cow-within-farm as a random effect. The effects of providing information on outcome measures (proportion thin, severely lame, with udder edema, poor fitness for transport, euthanized, and died) were tested with a general linear model. As demand for milk increased during the baseline period, additional linear mixed models were fitted to test whether the same outcome measures were affected by time (baseline or treatment period) and treatment (Informed or Control) using farm as a random effect. While cows were on the culling list (before shipping) the odds of being thin or having poor fitness for transport increased. After leaving the farms, cows spent (mean ± standard deviation) 82 ± 46 h in the marketing system before being slaughtered. Shipping from farm to abattoir increased the odds of being thin, having udder edema, or showing poor fitness for transport [odds ratio (OR) 5.8, 95% confidence interval 4.2 to 8.1; OR 14.7, 10.7 to 20.2; and OR 7.3, 5.7 to 9.5, respectively]. Providing this information to farmers (Informed treatment) did not affect the outcome measures. Compared with the baseline, during the treatment period fewer cows were shipped when thin (4.9 versus 9.0%) and with poor fitness for transport (15.7 versus 25.8%), and fewer cows died (5.4 versus 11.9%) or were euthanized (13.3 versus 20.5%). Increased demand for milk appeared to lead to delayed culling, such that more compromised cows were sent to slaughter. The results of this study show a need for clear and specific guidelines to assess fitness for transport of cull dairy cows.
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Affiliation(s)
- J Stojkov
- Animal Welfare Program, Faculty of Land and Food Systems, The University of British Columbia, Vancouver, V6T 1Z4, Canada.
| | - M A G von Keyserlingk
- Animal Welfare Program, Faculty of Land and Food Systems, The University of British Columbia, Vancouver, V6T 1Z4, Canada
| | - T Duffield
- Ontario Veterinary College, University of Guelph, ON, N1G 2W1, Canada
| | - D Fraser
- Animal Welfare Program, Faculty of Land and Food Systems, The University of British Columbia, Vancouver, V6T 1Z4, Canada
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12
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Walker JB, Roman-Muniz IN, Edwards-Callaway LN. Timely Euthanasia in the United States Dairy Industry-Challenges and a Path Forward. Animals (Basel) 2019; 10:E71. [PMID: 31906056 PMCID: PMC7022783 DOI: 10.3390/ani10010071] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2019] [Revised: 12/23/2019] [Accepted: 12/28/2019] [Indexed: 11/17/2022] Open
Abstract
Euthanasia is a valuable management tool utilized on dairies to end the suffering of sick or debilitated cows. Euthanasia should be implemented if an animal's pain cannot be adequately alleviated and if there is a limited chance of recovery. To be humane, euthanasia should be quick, painless, and administered by a trained individual. Despite its importance in ensuring cow well-being, the timeliness with which euthanasia decisions are made for dairy cattle is often overlooked or neglected. The timeliness of euthanasia is as important as the efficient, rapid administration of euthanasia itself. Timely euthanasia is a critical component of many on-farm animal care and verification programs yet opportunities exist within the industry to improve how effectively the industry is executing this critical component of cow management. There are challenges associated with performing euthanasia in a timely manner, such as inconsistencies in treatment protocols, inadequate employee training, difficulties assessing a cow's quality of life, and impacts of the human-animal bond on decision-making. The objective of this paper is to explain the importance of timely euthanasia to dairy cattle welfare, identify the challenges that can prevent the timeliness of euthanasia, and provide solutions and practical suggestions for improving the management of timely euthanasia on dairies.
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Affiliation(s)
| | - I. Noa Roman-Muniz
- Department of Animal Science, Colorado State University, Fort Collins, CO 80523-1171, USA;
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13
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Devani K, Valente TS, Crowley JJ, Orsel K. Development of optimal genetic evaluations for teat and udder structure in Canadian Angus cattle. J Anim Sci 2019; 97:4445-4452. [PMID: 31598680 PMCID: PMC6827401 DOI: 10.1093/jas/skz314] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Accepted: 10/03/2019] [Indexed: 11/30/2022] Open
Abstract
Despite their heritability and influence on female productivity, there are currently no genetic evaluations for teat and udder structure in Canadian Angus cattle. The objective of this study was to develop optimal genetic evaluations for these traits in the Canadian Angus population. Guidelines recommended by Beef Improvement Federation (BIF) were used to score teat and udder structure in 1,735 Canadian Angus cows from 10 representative herds. Cows scored ranged in parity from 1 to 13; however, >70% of cows were parity ≤4. Scores ranged from 1 (large, bottle shaped) to 9 (very small) for teats and from 1 (very pendulous) to 9 (very tight) for udders. Consistent with parity distribution, >70% of teat and udder scores were ≥6. Teat and udder scores (TS9 and US9, respectively) were modeled using a multiple trait animal model with random effects of contemporary group (herd-year-season) and additive genetic effect, and fixed effects of breed, parity group, and days between calving and scoring. To test good versus poor structure, a binary classification of 1 or 2 (TS2, US2) [comprised of scores 1 to 5 = 1 (poor structure) and scores 6 to 9 = 2 (good structure)] was created. Further, to assess the impact of grouping less frequently observed poor scores, a 1 to 7 scale (TS7, US7) was created by combining teat and udder scores 1 to 3. Analyses for teat and udder scores on scales TS9, US9, TS7, US7, and TS2, US2 were compared. In addition, both threshold and linear animal models were used to estimate variance components for the traits. Data treatment and models were evaluated based on correlation of resulting estimated breeding value (EBV) with corrected phenotypes, Spearman's rank correlation coefficient, average EBV accuracies (r), and deviance information criteria (DIC). TS9, US9 scales for teat and udder scores and linear models performed best. Estimates of heritability (SE) for teat and udder score were 0.32 (0.06) and 0.15 (0.04), respectively, indicating these traits were moderately heritable and that genetic improvement for teat and udder scores was possible. Estimates of phenotypic and genotypic correlations for teat and udder score were 0.46 (0.02) and 0.71 (0.09), respectively. Estimates of genotypic correlations with birth weight (BW), weaning weight (WW), and yearling weight (YW), ranged from -0.04 (0.10) to -0.20 (0.12), verifying the importance of selecting for improved teat and udder score as individual traits, alongside performance traits.
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Affiliation(s)
- Kajal Devani
- Department of Production Animal Health, Faculty of Veterinary Medicine, University of Calgary, Calgary, Canada
| | - Tiago S Valente
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, Canada
| | - John J Crowley
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, Canada
- AbacusBio International Ltd, Roslin Innovation Centre, East Bush, Midlothian, Edinburgh, UK
| | - Karin Orsel
- Department of Production Animal Health, Faculty of Veterinary Medicine, University of Calgary, Calgary, Canada
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14
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Edwards-Callaway LN, Walker J, Tucker CB. Culling Decisions and Dairy Cattle Welfare During Transport to Slaughter in the United States. Front Vet Sci 2019; 5:343. [PMID: 30713846 PMCID: PMC6345707 DOI: 10.3389/fvets.2018.00343] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Accepted: 12/20/2018] [Indexed: 11/13/2022] Open
Abstract
Nearly a third of dairy cows are removed from herds annually in the United States. Our objective is to describe what is known about the process of sending a dairy cow to slaughter in the United States including our perspectives about her fitness for transport, her condition upon arrival at the slaughter plant and the decisions to transport her in the first place. This process begins when the decision is made by the farmer to remove a cow from the herd. Once a cow leaves the farm, she makes her way either directly to slaughter or goes through one or more livestock auctions or markets along the way. Cull cows can travel considerable distance to slaughter and may face a number of welfare challenges during this process. These stressors are exacerbated if the cows are compromised and not fit for transport. While all major industry stakeholders have recommendations or guidelines about fitness for transport, none are enforced rules or regulations. There is little financial disincentive for farmers to stop shipping compromised dairy cows, and, in some cases, slaughter plants are willing to take the risk on purchasing cows in this condition as those that survive the journey often generate a good margin of return. As a result, the decision to ship compromised cull cows is too common, as indicated by data about cow condition both at the farm and the slaughter plant. Compromised culled dairy cattle continue to arrive at slaughter plants and leadership within the industry is needed to tackle this welfare challenge.
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Affiliation(s)
| | - Jennifer Walker
- Quality and Food Safety Danone North America, White Plains, NY, United States
| | - Cassandra B. Tucker
- Center for Animal Welfare, Department of Animal Science, University of California, Davis, Davis, CA, United States
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15
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Pfeiffer MM, Mafi GG, Ramanathan R, Neilson TM, VanOverbeke DL. Frequencies and severity of injection-site lesions in muscles from rounds of cow carcasses. Transl Anim Sci 2018; 3:130-134. [PMID: 32704785 PMCID: PMC7200569 DOI: 10.1093/tas/txy094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Accepted: 07/30/2018] [Indexed: 11/26/2022] Open
Abstract
The frequency and severity of injection-site lesions in the outside round muscles of both beef and dairy cattle were evaluated through a series of audits. Audits were conducted in 2017 on 1,300 rounds from dairy and beef cows from seven locations throughout the United States. Outside round muscles were butterfly cut into 1.25-cm slices and, if present, lesions were counted, measured, and categorized. Rounds from beef (7%) and dairy cattle (15%) had at least one injection-site lesion present. The most common location of injection-site lesions was quadrant 2 and 3, which contained both the biceps femoris and semitendinosus muscles. Injection-site lesions were more frequent (P < 0.05) in the biceps femoris for both beef and dairy rounds. Clear lesions accounted for 57% of injection-sites in both beef and dairy rounds, whereas metallic lesions made up 23% of the total in beef and 25% in dairy. Overall, there was a dramatic decline in the frequency (P < 0.05) of injection-site lesions since the 1998 (24 and 45 percentage units greater in beef and dairy rounds, respectively) and 2000 audits (13 and 20 percentage units greater in beef and dairy rounds, respectively). Educational programs, such as Beef Quality Assurance (BQA) and requirements for BQA training, have resulted in substantial improvements in beef management practices for both the beef and dairy industries.
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Affiliation(s)
- Morgan M Pfeiffer
- Department of Animal and Food Sciences, Oklahoma State University, Stillwater, OK
| | - Gretchen G Mafi
- Department of Animal and Food Sciences, Oklahoma State University, Stillwater, OK
| | - Ranjith Ramanathan
- Department of Animal and Food Sciences, Oklahoma State University, Stillwater, OK
| | - Taylor M Neilson
- Department of Animal and Food Sciences, Oklahoma State University, Stillwater, OK
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16
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Wigham EE, Butterworth A, Wotton S. Assessing cattle welfare at slaughter - Why is it important and what challenges are faced? Meat Sci 2018; 145:171-177. [PMID: 29982070 DOI: 10.1016/j.meatsci.2018.06.010] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2018] [Revised: 05/10/2018] [Accepted: 06/11/2018] [Indexed: 11/17/2022]
Abstract
The welfare of animals in the meat industry, especially at the time of slaughter, has become an area of increasing public scrutiny and has prompted research on its assessment, and enhancement. Fundamental factors such as the effects of transport, reactions of the animals to novel environments and underlying commercial pressures which impose 'speed' and 'robustness of action' in the way animals are handled, can pose a challenge when establishing a valid, reliable and feasible welfare assessment protocol for use at slaughter. The purpose of this review is to assess published work on animal welfare at slaughter, with a focus on the current methods used to assess cattle welfare in the slaughterhouse, which are outlined in the scientific and trade literature, and how these relate to the interaction between the environment, the animal, and slaughterhouse personnel.
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Affiliation(s)
- Eleanor E Wigham
- Bristol Veterinary School, University of Bristol, Langford, Bristol BS40 5DU, UK.
| | - Andy Butterworth
- Bristol Veterinary School, University of Bristol, Langford, Bristol BS40 5DU, UK
| | - Steve Wotton
- Bristol Veterinary School, University of Bristol, Langford, Bristol BS40 5DU, UK
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17
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Harris MK, Eastwood LC, Boykin CA, Arnold AN, Gehring KB, Hale DS, Kerth CR, Griffin DB, Savell JW, Belk KE, Woerner DR, Hasty JD, Delmore RJ, Martin JN, Lawrence TE, McEvers TJ, VanOverbeke DL, Mafi GG, Pfeiffer MM, Schmidt TB, Maddock RJ, Johnson DD, Carr CC, Scheffler JM, Pringle TD, Stelzleni AM. National Beef Quality Audit-2016: assessment of cattle hide characteristics, offal condemnations, and carcass traits to determine the quality status of the market cow and bull beef industry. Transl Anim Sci 2018; 2:37-49. [PMID: 32704688 PMCID: PMC7200876 DOI: 10.1093/tas/txx002] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2017] [Accepted: 12/07/2017] [Indexed: 11/26/2022] Open
Abstract
To continue the series that began in 1994, the National Beef Quality Audit (NBQA) – 2016 was conducted to quantify the quality status of the market cow and bull beef sector, as well as determine improvements made in the beef and dairy industry since 2007. The NBQA-2016 was conducted from March through December of 2016, and assessed hide-on carcasses (n = 5,278), chilled carcasses (n = 4,285), heads (n = 5,720), and offal items (n = 4,800) in 18 commercial processing facilities throughout the United States. Beef cattle were predominantly black-hided; 68.0% of beef cows and 67.2% of beef bulls possessed a black hide. Holstein was the predominant type of dairy animal observed. Just over half (56.0%) of the cattle surveyed had no mud contamination on the hide, and when mud was present, 34.1% of cattle only had small amounts. Harvest floor assessments found 44.6% of livers, 23.1% of lungs, 22.3% of hearts, 20.0% of viscera, 8.2% of heads, and 5.9% of tongues were condemned. Liver condemnations were most frequently due to abscess presence. In contrast, contamination was the primary reason for condemnation of all other offal items. Of the cow carcasses surveyed, 17.4% carried a fetus at the time of harvest. As expected, mean carcass weight and loin muscle area values observed for bulls were heavier and larger than cows. The marbling scores represented by cull animal carcasses were most frequently slight and traces amounts. Cow carcasses manifested a greater amount of marbling on average than bull carcasses. The predominant fat color score showed all carcasses surveyed had some level of yellow fat. Only 1.3% of carcasses exhibited signs of arthritic joints. Results of the NBQA-2016 indicate there are areas in which the beef and dairy industries have improved and areas that still need attention to prevent value loss in market cows and bulls.
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Affiliation(s)
- McKensie K Harris
- Department of Animal Science, Texas A&M AgriLife Research, Texas A&M University, College Station, TX
| | - L Clay Eastwood
- Department of Animal Science, Texas A&M AgriLife Research, Texas A&M University, College Station, TX
| | - Courtney A Boykin
- Department of Animal Science, Texas A&M AgriLife Research, Texas A&M University, College Station, TX
| | - Ashley N Arnold
- Department of Animal Science, Texas A&M AgriLife Research, Texas A&M University, College Station, TX
| | - Kerri B Gehring
- Department of Animal Science, Texas A&M AgriLife Research, Texas A&M University, College Station, TX
| | - Daniel S Hale
- Department of Animal Science, Texas A&M AgriLife Research, Texas A&M University, College Station, TX
| | - Christopher R Kerth
- Department of Animal Science, Texas A&M AgriLife Research, Texas A&M University, College Station, TX
| | - Davey B Griffin
- Department of Animal Science, Texas A&M AgriLife Research, Texas A&M University, College Station, TX
| | - Jeffrey W Savell
- Department of Animal Science, Texas A&M AgriLife Research, Texas A&M University, College Station, TX
| | - Keith E Belk
- Department of Animal Sciences, Colorado State University, Fort Collins, CO
| | - Dale R Woerner
- Department of Animal Sciences, Colorado State University, Fort Collins, CO
| | - Josh D Hasty
- Department of Animal Sciences, Colorado State University, Fort Collins, CO
| | - Robert J Delmore
- Department of Animal Sciences, Colorado State University, Fort Collins, CO
| | - Jennifer N Martin
- Department of Animal Sciences, Colorado State University, Fort Collins, CO
| | - Ty E Lawrence
- Beef Carcass Research Center - Department of Agricultural Sciences, West Texas A&M University, Canyon, TX
| | - Trenton J McEvers
- Beef Carcass Research Center - Department of Agricultural Sciences, West Texas A&M University, Canyon, TX
| | | | - Gretchen G Mafi
- Department of Animal Science, Oklahoma State University, Stillwater, OK
| | - Morgan M Pfeiffer
- Department of Animal Science, Oklahoma State University, Stillwater, OK
| | - Ty B Schmidt
- Department of Animal Science, University of Nebraska-Lincoln, Lincoln, NE
| | - Robert J Maddock
- Department of Animal Sciences, North Dakota State University, Fargo, ND
| | - D Dwain Johnson
- Department of Animal Sciences, University of Florida, Gainesville, FL
| | - Chad C Carr
- Department of Animal Sciences, University of Florida, Gainesville, FL
| | - Jason M Scheffler
- Department of Animal Sciences, University of Florida, Gainesville, FL
| | - T Dean Pringle
- Department of Animal & Dairy Science, University of Georgia, Athens, GA
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