scholarly journals Erratum to: Effects of various doses of lubabegron on calculated ammonia gas emissions, growth performance, and carcass characteristics of beef cattle during the last 56 days of the feeding period

2021 ◽  
Vol 5 (4) ◽  
Author(s):  
John C Kube ◽  
Ben P Holland ◽  
Alyssa B Word ◽  
Janet B Allen ◽  
Michelle Calvo-Lorenzo ◽  
...  
Keyword(s):  
Beef Cattle ◽  
Growth Performance ◽  
Carcass Characteristics ◽  
Feeding Period ◽  
Ammonia Gas ◽  
Gas Emissions

scholarly journals Effects of various doses of lubabegron on calculated ammonia gas emissions, growth performance, and carcass characteristics of beef cattle during the last 56 days of the feeding period

2021 ◽  
Author(s):  
J C Kube ◽  
B P Holland ◽  
A B Word ◽  
J B Allen ◽  
M Calvo-Lorenzo ◽  
...  
Keyword(s):  
Average Daily Gain ◽  
Carcass Characteristics ◽  
Live Weight ◽  
Feedlot Cattle ◽  
Carcass Weight ◽  
Receptor Subtype ◽  
Receptor Subtypes ◽  
Feeding Period ◽  
Ammonia Gas ◽  
Gas Emissions

Abstract Lubabegron (LUB; Experior, Elanco, Greenfield, IN, USA) was approved by the U.S. Food and Drug Administration in 2018 and is indicated for the reduction of ammonia (NH3) gas emissions·kg-1 BW and HCW when fed to feedlot cattle during the final 14 to 91 d of the finishing period. Lubabegron demonstrates antagonistic behavior at the β1 and β2 receptor subtypes and agonistic behavior at the β3 receptor subtype in cattle and is classified by the Center of Veterinary Medicine (CVM) as a ‘beta-adrenergic agonist/antagonist’. This report describes a randomized complete block study that evaluated LUB dose (0, 1.5, 3.5, and 5.5 mg·kg-1 DM) during the last 56 d of the feeding period on calculated NH3 gas emissions, live weight, carcass weight, and associated ratios in beef feedlot cattle. Carcass characteristics, mobility, and health were also evaluated. All cattle received monensin and tylosin throughout the study. Ammonia gas emissions were calculated using the equation developed by Brown et al. (2019). The reduction in calculated cumulative NH3 gas emissions with LUB ranged from 1.3 to 11.0% (85 to 708 g/hd). When NH3 gas emissions were expressed on a live weight (unshrunk) and carcass weight basis, calculated NH3 gas emissions decreased by 3.0 to 12.8% and 3.8 to 14.6%, respectively. Daily dry matter intake (DMI) was 2.3% greater (Ptrt < 0.05) for steers that received LUB. Average daily gain (ADG) was 13.7% greater (Ptrt < 0.05; 1.68 vs 1.91 kg), while gain efficiency was 10.8% greater (Ptrt < 0.05; 0.167 vs 0.185) for steers fed LUB. Animal mobility was scored in the pen approximately 1 wk prior to harvest, when cattle were loaded on trucks scheduled for harvest, and at antemortem inspection during lairage. No treatment differences (Ptrt ≥ 0.170) were observed at any time for the percent of cattle receiving mobility scores of 1 or 2 (normal or minor stiffness but moving with the normal cattle, respectively). Cattle mobility scored as a 1 or 2 equaled or exceeded 92% at all times. Final BW and HCW increased (Ptrt < 0.05) 11.6 to 15.7 kg and 11.3 to 17.1 kg, respectively, in cattle receiving LUB compared to cattle receiving monensin plus tylosin alone.

scholarly journals Use of barley or corn silage when fed with barley, corn, or a blend of barley and corn on growth performance, nutrient utilization, and carcass characteristics of finishing beef cattle

2019 ◽  
Vol 4 (1) ◽  
pp. 129-140 ◽  
Author(s):  
Jordan A Johnson ◽  
Brittney D Sutherland ◽  
John J McKinnon ◽  
Tim A McAllister ◽  
Gregory B Penner
Keyword(s):  
Body Weight ◽  
Beef Cattle ◽  
Growth Performance ◽  
Carcass Characteristics ◽  
Corn Silage ◽  
Neutral Detergent Fiber ◽  
Feed Ratio ◽  
Final Body Weight ◽  
Liver Abscesses ◽  
Finishing Beef Cattle

Abstract The objective of this study was to evaluate the effects of the source of silage, cereal grain, and their interaction on growth performance, digestibility, and carcass characteristics of finishing beef cattle. Using a completely randomized design within an 89-d finishing study, 288 steers were randomly assigned to 1 of 24 pens (12 steers/pen) with average steer body weight (BW) within a pen of 464 kg ± 1.7 kg (mean ± SD). Diets were arranged in a 2 × 3 factorial with corn silage (CS) or barley silage (BS) included at 8% (dry matter [DM] basis). Within each silage source, diets contained dry-rolled barley grain (BG; 86% of DM), dry-rolled corn grain (CG; 85% of DM), or an equal blend of BG and CG (BCG; 85% of DM). Total tract digestibility of nutrients was estimated from fecal samples using near-infrared spectroscopy. Data were analyzed with pen as the experimental unit using the Mixed Model of SAS with the fixed effects of silage, grain, and the two-way interaction. Carcass and fecal kernel data were analyzed using GLIMMIX utilizing the same model. There were no interactions detected between silage and grain source. Feeding CG increased (P < 0.01) DM intake by 0.8 and 0.6 kg/d relative to BG and BCG, respectively. Gain-to-feed ratio was greater (P = 0.04) for BG (0.172 kg/kg) than CG (0.162 kg/kg) but did not differ from BCG (0.165 kg/kg). Furthermore, average daily gain (2.07 kg/d) and final body weight did not differ among treatments (P ≥ 0.25). Hot carcass weight (HCW) was 6.2 kg greater (372.2 vs. 366.0 kg; P < 0.01) and dressing percentage was 0.57 percentage units greater (59.53 vs. 58.96 %; P = 0.04) for steers fed CS than BS, respectively. There was no effect of dietary treatment on the severity of liver abscesses (P ≥ 0.20) with 72.0% of carcasses having clear livers, 24.4% with minor liver abscesses, and 3.6% with severe liver abscesses. Digestibility of DM, organic matter, crude protein, neutral detergent fiber, and starch were greater for BG (P < 0.01) than CG or BCG. As expected, grain source affected the appearance of grain kernels in the feces (P ≤ 0.04). Feeding CS silage increased the appearance of fractured corn kernels (P = 0.04), while feeding BS increased fiber appearance in the feces (P = 0.02). Current results indicate that when dry rolled, feeding BG resulted in improved performance and digestibility compared with CG and BCG. Even at low inclusion levels (8% of DM), CS resulted in improved carcass characteristics relative to BS.

Effect of nutritional regimen including limit feeding and breed on growth performance, carcass characteristics and meat quality in beef cattle

2012 ◽  
Vol 92 (3) ◽  
pp. 327-341 ◽  
Author(s):  
E. M. McGregor ◽  
C. P. Campbell ◽  
S. P. Miller ◽  
P. P. Purslow ◽  
I. B. Mandell
Keyword(s):  
Beef Cattle ◽  
Growth Performance ◽  
Meat Quality ◽  
Shear Force ◽  
Average Daily Gain ◽  
Carcass Characteristics ◽  
High Energy ◽  
Ad Libitum ◽  
Limit Feeding ◽  
Daily Gain

McGregor, E M., Campbell, C. P., Miller, S. P., Purslow, P. P. and Mandell, I. B. 2012. Effect of nutritional regimen including limit feeding and breed on growth performance, carcass characteristics and meat quality in beef cattle. Can. J. Anim. Sci. 92: 327–341. The effects of nutritional management regimen and breed on growth performance, carcass attributes, and meat quality were evaluated in 68 British (BRIT) and Continental (CONT) crossbred steers, managed on one of three nutritional regimens: (1) ad libitum access to a 77% corn diet (ALGRAIN), (2) limit feeding initially of the 77% corn diet, followed by ad libitum access to the 77% corn diet (LFGRAIN), and (3) limit feeding initially of a 90% haylage diet, followed by ad libitum access to the 77% corn diet (LFHAYL). Nutritional regimen by breed interactions (P<0.02) were present for average daily gain, dry matter intake (DMI), gain to feed, and shear force. LFHAYL regimen decreased gains to a greater extent for BRIT steers than CONT steers managed on ALGRAIN or LFGRAIN. Feed intakes were similar across nutritional regimens for CONT steers, while DMI was depressed in BRIT on LFHAYL as compared with steers started on ALGRAIN or LFGRAIN. Gain to feed was greater in BRIT cattle on LFGRAIN vs. ALGRAIN, while gain to feed was similar in CONT started on grain (ALGRAIN, LFGRAIN). Shear force was lower for beef from LFHAYL BRIT vs. beef from BRIT on ALGRAIN or LFGRAIN, while the converse was true for CONT. Limit feeding of a high-energy diet may be appropriate for cattle of British background to reduce feed input costs, while ensuring tenderness.

scholarly journals Production, carcass characteristics and valuable cuts of beef breed bulls and heifers in Finnish beef cattle population

2015 ◽  
Vol 24 (3) ◽  
pp. 164-172 ◽  
Author(s):  
Maiju Pesonen ◽  
Arto Kalevi Huuskonen
Keyword(s):  
Beef Cattle ◽  
Growth Performance ◽  
Production System ◽  
Carcass Traits ◽  
Carcass Characteristics ◽  
Product Yield ◽  
Cattle Population ◽  
Beef Production ◽  
Beef Breed ◽  
Breed Differences

The objective of the present study was to determine growth and carcass traits of beef breed bulls and heifers in the Finnish beef cattle population. The data collected from Finnish slaughterhouses included observations of 6323 and 2385 Hereford (bulls and heifers, respectively), 4421 and 1794 Charolais, 4335 and 1951 Limousin, 4068 and 1692 Aberdeen Angus, 2151 and 774 Simmental, 344 and 147 Blonde d’Aquitaine animals. For estimating valuable cuttings, a separate dataset including in total 1112 bulls and 260 heifers was also collected. Significant breed differences were observed in growth performance, carcass traits and retail product yield. The later maturing, Continental beef breeds seem to reach higher carcass gains, produce less fat and have more valuable cuts than the earlier maturing British beef breeds. The later maturing beef breeds tend to have carcass traits that suit well in the Finnish beef production system.

scholarly journals Supplementation of Live Yeast, Mannan Oligosaccharide, and Organic Selenium during the Adaptation Phase of Newly Arrived Beef Cattle: Effects on Health Status, Immune Functionality, and Growth Performance

Antibiotics ◽  
2021 ◽  
Vol 10 (9) ◽  
pp. 1114
Author(s):  
Silvia Grossi ◽  
Matteo Dell’Anno ◽  
Luciana Rossi ◽  
Riccardo Compiani ◽  
Carlo Angelo Sgoifo Rossi
Keyword(s):  
Health Status ◽  
Treatment Group ◽  
Beef Cattle ◽  
Growth Performance ◽  
Carcass Characteristics ◽  
Initial Weight ◽  
Organic Selenium ◽  
Inflammatory Status ◽  
Growth Performances ◽  
Live Yeast

The effect of a nutraceutical mixture, based on live yeast (LY), mannan oligosaccharides (MOS) and organic selenium (Se) on health status, as well as immune functionality and growth performance in the fattening of newly received beef cattle, was evaluated. A total of 1036 Charolaise heifers were allocated into two experimental groups: (i) control group, without any nutraceutical support (n = 487; initial weight = 325 ± 21 kg); and (ii) treatment group, supplementation during the first 30 days, with LY (5 g/head/day), organic Se (3 mg/head/day), and MOS (10 g/head/day) (n = 549; initial weight = 323 ± 23 kg). The incidence of bovine respiratory disease (BRD) and other health issues was monitored, as well as the mortality rate. Blood samples were taken at d0 and d30 to evaluate the immune functionality and the inflammatory status. Growth performances, feces chemical composition, and carcass characteristics were recorded. The BRD occurrence tended to be reduced (p = 0.06) in the Treatment group. The BHV-1 antibody production after vaccination was significantly improved (p = 0.031), as well as the bactericidal activity (p = 0.0012) in the Treatment group. No differences were found in the inflammatory status parameters. The final weight (p = 0.006) and the average daily gain at d30 (p < 0.0001) were significantly improved by the treatment. No differences were found in terms of carcass characteristics, while the fecal content of NDF (p < 0.0001), ADF (p = 0.0003), and starch (p < 0.0001) were significantly reduced by the treatment. The result of the present study suggests that the nutraceutical mixture used can support the animal’s immune systems, improving its ability to react against pathogens, as well as feed efficiency and growth performances during the whole fattening period.

PSVIII-15 Effect of Endovac-Beef vaccination on performance, dietary energetics, and carcass characteristics of growing-finishing calf-fed Holstein steers

2021 ◽  
Vol 99 (Supplement_3) ◽  
pp. 429-430
Author(s):  
Brooke C Latack ◽  
Pedro H Carvalho ◽  
Richard A Zinn
Keyword(s):  
Growth Performance ◽  
Animal Health ◽  
Average Daily Gain ◽  
Carcass Characteristics ◽  
Live Weight ◽  
Net Energy ◽  
Feeding Period ◽  
Marbling Score ◽  
Muscle Area ◽  
Eye Infection

Abstract Objectives were to evaluate the influence of ENDOVAC-Beef® (Endovac Animal Health, Columbia, MO) vaccination on calf-fed Holstein steer growth performance, dietary energetics, and carcass characteristics. Fifty Holstein steer calves were utilized in a 322 d trial. Calves were blocked by initial shrunk body weight (134 ±5 kg) and randomly assigned to treatments within weight groups to 10 pens (5 steers per pen, 5 pens per treatment). Five pen groups received the ENDOVAC-Beef vaccination on d 28 and d 56, and the remaining 5 pens did not receive the ENDOVAC-Beef vaccination. All steers were fed the same steam-flaked corn-based growing-finishing diet. Vaccination did not affect (P ≥ 0.10) live weight, average daily gain, and dry matter intake during the 322 d feeding period. However, vaccination increased (P ≤ 0.04) gain efficiency and estimated dietary net energy values (NE) during the first 112 d on feed. Vaccination did not affect (P ≥ 0.14) gain efficiency or estimated dietary NE during the final 112 to 322 d, or over the entire feeding period (1 to 322 d). Vaccination did not affect (P ≥ 0.31) hot carcass weight, dressing percentage, and marbling score. However, vaccinating calf-fed Holstein steers with ENDOVAC-Beef increased (P ≤ 0.01) longissimus muscle area (LMA; 86.5 vs 76.8 cm2) and retail yield (51.3 vs 50.4); but, tended to increase (P = 0.07) carcass fat thickness. Morbidity and pink eye infection were low and not affect by treatment (P ≥ 0.18). We conclude that while vaccinating calf-fed Holstein steers with ENDOVAC-Beef did not have an overall effect on growth-performance, it increased (13%) LMA and retail carcass yield (1.8%).

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