Comparison of alternative beef production systems based on forage finishing or grain-forage diets with or without growth promotants: 1. Feedlot performance, carcass quality, and production costs

2006 ◽  
Vol 84 (8) ◽  
pp. 2168-2177 ◽  
Author(s):  
R. Berthiaume ◽  
I. Mandell ◽  
L. Faucitano ◽  
C. Lafrenière
Keyword(s):  
Production Systems ◽  
Production Costs ◽  
Carcass Quality ◽  
Beef Production ◽  
Feedlot Performance ◽  
Growth Promotants ◽  
Forage Diets

scholarly journals 68 Assessing the Performance of Multiple Grass-fed Beef Production Systems in California

2020 ◽  
Vol 98 (Supplement_4) ◽  
pp. 46-47
Author(s):  
Sarah C Klopatek ◽  
Toni Duarte ◽  
Crystal Yang ◽  
James W Oltjen
Keyword(s):  
Mixed Model ◽  
Systems Approach ◽  
Production Systems ◽  
Carcass Quality ◽  
Animal Performance ◽  
Beef Production ◽  
Marbling Score ◽  
Final Body Weight ◽  
Whole Systems

Abstract With demand for grass-fed beef continuing to increase, there is an immediate need to determine animal performance and product quality from varying grass-fed systems. Therefore, using a whole systems approach, we investigated the performance and carcass quality of multiple grass-fed beef systems in California. The treatments included: 1) steers stocked on pasture, then feedyard finished for 140 days (CON); 2) steers grass-fed for 20 months (20GF); 3) steers grass-fed for 20 months with a 45-day grain finish (GR45); and 4) steers grass-fed for 25 months (25GF). The data were analyzed using a mixed model procedure in R. Final body weight (FBW) varied significantly between treatments (P < 0.05) with the CON cattle finishing at 626 kg and GF20 finishing with the lowest FBW of 478 kg. There were no significant differences in FBW between GF45 and GF25 treatments (P > 0.05), with FBW equaling 551 kg and 570 kg, respectively. Dressing percentage (DP) differed significantly between all treatments (P < 0.05), with CON DP at 61.8%, followed by GR45 at 57.5%, GF25 at 53.4%, and GF20 at 50.3%. Marbling scores and quality grades were significantly higher for CON compared to all other treatments (P < 0.05), with a marbling score of 421; 14% of CON animals graded select and 85% graded choice or upper choice. Cattle in the GR20 had the lowest marbling score of 285 (P < 0.05); 59% of the GR20 cattle graded select and 41% graded standard. There was no difference in marbling when comparing the GF25 and GR45 (P > 0.5). In addition, carcasses graded similarly between the two treatments with GF25 grading 13% standard 82% select, and 6% choice, GR45 graded 85% select and 15% choice. The findings from this study indicate that varying CA grass-fed beef production systems results in significant differences in both animal performance and meat quality.

Effects of calf- and yearling-fed beef production systems and growth promotants on production and profitability

2013 ◽  
Vol 93 (1) ◽  
pp. 171-184 ◽  
Author(s):  
Óscar López-Campos ◽  
Jennifer L. Aalhus ◽  
Erasmus K. Okine ◽  
Vern S. Baron ◽  
John A. Basarab
Keyword(s):  
Dry Matter ◽  
Production Systems ◽  
Beef Production ◽  
Feed Conversion ◽  
Adrenergic Agonist ◽  
Growth Implants ◽  
Quality Grade ◽  
Reduce Risk ◽  
Growth Promotants ◽  
Growth Implant

López-Campos, Ó., Aalhus, J. L., Okine, E. K., Baron, V. S. and Basarab, J. A. 2013. Effects of calf- and yearling-fed beef production systems and growth promotants on production and profitability. Can. J. Anim. Sci. 93: 171–184. In each of 2 yr, 112 spring-born steers were used to evaluate the effect of calf-fed vs. yearling-fed with and without growth implant and β-adrenergic agonist on production parameters and economic potential. Steers were grouped into: (1) non-implanted feeders harvested at 11–14 mo of age, (2) growth implanted feeders harvested at 11–14 mo of age, (3) non-implanted feeders harvested at 19–23 mo of age, and (4) growth implanted feeders harvested at 19–23 mo of age. Production data were collected and economic evaluation was performed. Calf-fed steers grew slower (1.21 vs. 1.99±0.07 kg d−1) and had a poorer feed conversion ratio [5.32 vs. 4.99±0.34 kg dry matter intake (DMI) kg−1 gain] during the feedlot dietary adjustment period than yearling-fed. Calf-fed steers were more efficient than yearling-fed during the first 76–83 d (5.16 vs. 7.33±0.11 kg DMI kg−1 gain) and latter 48–79 d (5.69 vs. 14.28±1.50 kg DMI kg−1 gain) of the finishing period. Implanted steers were more efficient than non-implanted during the dietary feedlot adjustment period (4.80 vs. 5.52±0.15 kg DMI kg−1 gain), and during the first 76–83 d (6.05 vs. 6.44±0.11 kg DMI kg−1 gain) and latter 48–79 d of the finishing period (9.29 vs. 10.69±1.50 kg DMI kg−1 gain). Implanted steers grew 11.4–19.6% faster than non-implanted throughout the finishing period, while yearling-fed grew 11.1–12.9% faster during the first 76–83 d, but 49.1–64.4% slower during the last 48–79 d of the finishing period compared with calf-fed. Quality grade was improved for non-implanted steers, with 43.6% of yearling-fed and 35.7% calf-fed steers grading AAA. Adjusted net return was best for calf-fed implanted ($17.52 head−1), followed by calf-fed non-implanted ($−41.92 head−1), yearling-fed implanted ($−73.77 head−1), and yearling-fed non-implanted ($−99.65 head−1) production strategies. The results of the present study suggest that reducing age at slaughter combined with growth implant can increase profit and reduce risk, but growth implants can negatively affect the carcass quality.

scholarly journals Greenhouse Gas Emissions from Calf- and Yearling-Fed Beef Production Systems, With and Without the Use of Growth Promotants

Animals ◽  
2012 ◽  
Vol 2 (2) ◽  
pp. 195-220 ◽  
Author(s):  
John Basarab ◽  
Vern Baron ◽  
Óscar López-Campos ◽  
Jennifer Aalhus ◽  
Karen Haugen-Kozyra ◽  
...  
Keyword(s):  
Greenhouse Gas Emissions ◽  
Greenhouse Gas ◽  
Production Systems ◽  
Beef Production ◽  
Gas Emissions ◽  
Growth Promotants

Influence of beef production system on vitamin B12 concentrations in plasma and muscle

2007 ◽  
Vol 87 (2) ◽  
pp. 277-280 ◽  
Author(s):  
C. L. Girard ◽  
R. Berthiaume ◽  
L. Faucitano ◽  
C. Lafrenière
Keyword(s):  
Vitamin B12 ◽  
Key Words ◽  
Production System ◽  
Production Systems ◽  
Longissimus Dorsi ◽  
Vitamin B ◽  
Beef Production ◽  
Grass Silage ◽  
Growth Promotants

Vitamin B12 concentrations in longissimus dorsi of steers were decreased by the addition of concentrate as compared with feeding with grass silage only, but this decrease was prevented by the use of growth promotants (Revalor® and Rumensin®; P = 0.06). Beef production systems can modify vitamin B12 concentrations in meat. Key words: Beef, plasma, muscle, vitamin B12

Effects of extending the grazing season in beef production systems

2001 ◽  
Vol 2001 ◽  
pp. 116-116 ◽  
Author(s):  
B.J. O’Neill ◽  
M.J. Drennan ◽  
P.J. Caffrey
Keyword(s):  
Production Systems ◽  
Rural Environment ◽  
Environment Protection ◽  
Beef Production ◽  
Grazing Season ◽  
Protection Scheme ◽  
Grass Silage ◽  
Feed Costs ◽  
The Cost ◽  
Eu Support

The cost of grazed grass is less than half that of grass silage (O’Kiely, 1994) and incomes from beef production are low and largely dependent on EU support schemes. Thus the income from beef production could be incresed by reducing feed costs through increasing the proportion of grazed grass in the diet and optimising the use of the various support schemes. The objective of this two-year study was to examine the effects on the performance of yearling cattle of turnout to pasture three weeks earlier than normal. This was examined within two suckler beef production systems. One was a standard system similar to that outlined by Drennan (1993) and the second was compatible with the Rural Environment Protection Scheme (REPS).

On-farm Development of Potato Production from True Seed in Indonesia

1992 ◽  
Vol 28 (1) ◽  
pp. 31-39 ◽  
Author(s):  
N. Gunadi ◽  
M. J. Potts ◽  
R. Sinung-Basuki ◽  
Greta A. Watson
Keyword(s):  
Production Systems ◽  
Potato Production ◽  
Production Costs ◽  
Potato Seed ◽  
True Potato Seed ◽  
Yield Difference ◽  
Tuber Crop ◽  
On Farm ◽  
Comparable Quality ◽  
Better Than

SummaryThree seasons of on-farm experimentation to develop potato production from botanical or true potato seed (TPS) under cool fertile conditions in West Java, Indonesia, are described. Twenty-three farmers experimented with two production systems: use of transplants, and use of seedling tubers produced in nursery beds. There was little yield difference between the systems, but an apparent progeny × system × season interaction was observed. All progenies were more resistant to late blight than the present cultivars grown from tubers. Appropriate matching of progeny and system gave seed of comparable quality with, but total yields slightly less than, certified imported seed of cv. Granola. Ware quality was slightly better than that of cv. Granola. Production costs were markedly less than for a tuber crop, making TPS ideal for small, resource-poor farmers.

Life cycle environmental consequences of grass-fed and dairy beef production systems in the Northeastern United States

2017 ◽  
Vol 142 ◽  
pp. 1619-1628 ◽  
Author(s):  
Nicole E. Tichenor ◽  
Christian J. Peters ◽  
Gregory A. Norris ◽  
Greg Thoma ◽  
Timothy S. Griffin
Keyword(s):  
United States ◽  
Life Cycle ◽  
Production Systems ◽  
Beef Production ◽  
Northeastern United States ◽  
Environmental Consequences

Bioeconomic evaluation of embryo transfer in beef production systems: III. Embryo lines for producing bulls

1992 ◽  
Vol 70 (4) ◽  
pp. 1091-1097 ◽  
Author(s):  
F. Ruvuna ◽  
J. F. Taylor ◽  
J. P. Walter ◽  
J. W. Turner ◽  
R. M. Thallman
Keyword(s):  
Embryo Transfer ◽  
Production Systems ◽  
Beef Production
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