Effects of Differing Ratios of Corn Silage and Corn Grain on Feedlot Performance, Carcass Characteristics and Projected Economic Returns

Brennan, Robert W.; Hoffman, M. P.; Parrish, F. C.; Epplin, Francis M.; Bhide, Shashanka; Heady, Earl O.

doi:10.2527/jas1987.64123x

Cited by 15 publications

(23 citation statements)

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“…Since feed intakes were similar on a per unit of LW basis (2.4% versus 2.3%), these differences in ME intake can be attributed to the lighter weight of steers in Experiment 2 and to the poorer quality silage and the lower energy grain (barley) used in Experiment 2. In the present studies, average feed conversion efficiencies of 9.3 and 10.8 kg feed consumed per kg of liveweight gain were within the range (8.9:1, 10.1:1, 12.4:1) reported by other authors (Brennan et al 1987, Oltjen et al 1971, Young & Kauffman 1978 for steers fed ad libitum on high grain rations.…”

Section: Discussionsupporting

confidence: 88%

The effect of short‐term grain feeding on liveweight gain and beef quality

Muir

Smith

Wallace

et al. 1998

New Zealand Journal of Agricultural Research

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Two serial slaughter experiments were conducted to compare the liveweight gain and carcass quality of 3-year-old Angus steers finished on concentrate-based rations with steers finished on high quality spring pasture in New Zealand. Experiment 1 used a feedlot ration of 70% maize grain and 30% pasture silage and Experiment 2 used barley instead of maize. In both experiments, steers were adjusted to the concentrate ration prior to being fed ad libitum for 12 weeks.Finishing regime led to a significant difference in carcass weight in Experiment 1 (363 and 407 kg for pasture and grain, respectively). There was no significant difference in final carcass weight in Experiment 2. There was no significant effect of feeding regime on marbling in either experiment. Although grain-finishing significantly affected pH in Experiment 1, there were no treatment effects on tenderness in either experiment, and resident New Zealand panellists were unable to detect sensory differences between beef from the two feeding regimes when comparisons were made at the same slaughter time. In both experiments, steers fed the concentrate diet had brighter and redder meat, but this may have been related to the reduced level of exercise of the feedlot group rather than diet per se. Diet had no effect on carcass fat colour A96086 Received 18 December 1996; accepted II June 1998 in Experiment 1 but steers fed the feedlot ration in Experiment 2 had significantly whiter fat colour.In these experiments the effects of short-term grain finishing on meat quality were minor. It was concluded that, provided a high growth rate and adequate level of finish could be achieved, beef produced from pasture finishing was similar in tenderness and taste to beef finished for up to 100 days on a feedlot.

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Section: Discussionsupporting

confidence: 88%

The effect of short‐term grain feeding on liveweight gain and beef quality

Muir

Smith

Wallace

et al. 1998

New Zealand Journal of Agricultural Research

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“…There were also no differences in ADG when British steers were fed ad libitum diets with 19, 37, or 56% of dietary energy being supplied from corn silage (Brennan et al 1987) or in Charolais cross steers fed 26 or 51% corn silage diets (Rompala et al 1984). In contrast, gains were lower when corn silage was fed at approximately 59% of the diet versus 13% (Vance et al 1972a) or 16% (Danner et al 1980) corn silage diets, with the latter study reporting increased DMI, and depressed feed conversion when higher silage diets were fed.…”

Section: Resultsmentioning

confidence: 99%

“…In contrast, Thompson et al (1982) found that BW gains and feed conversion were increased when lambs were fed diets containing 33 or 67% corn silage (DM basis) [supplemented with soybean meal (SBM)] as compared with lambs on an all grain diet. Marbling and carcass grades were not influenced by grain feeding level in several studies (Vance et al 1972a;Young and Kauffman 1978;Brennan et al 1987;Loerch and Fluharty 1998), while Nour et al (1994) reported enhanced marbling with increased dietary grain content. Taste panel assessment of palatability attributes (tenderness, juiciness, flavour) has not been affected by grain content of the diet in several studies (Young and Kauffman 1978;Brennan et al 1987;Nour et al 1994).…”

mentioning

confidence: 99%

“…Marbling and carcass grades were not influenced by grain feeding level in several studies (Vance et al 1972a;Young and Kauffman 1978;Brennan et al 1987;Loerch and Fluharty 1998), while Nour et al (1994) reported enhanced marbling with increased dietary grain content. Taste panel assessment of palatability attributes (tenderness, juiciness, flavour) has not been affected by grain content of the diet in several studies (Young and Kauffman 1978;Brennan et al 1987;Nour et al 1994). Production costs for finishing cattle may be lowered by incorporating more corn silage in finishing diets, provided growth performance, time on feed, and carcass traits are not compromised.…”

mentioning

confidence: 99%

“…The high grain diets have been used to maximize growth performance (gain, feed intake, feed conversion), limit time on feed, take advantage of cheap feed grains, and eliminate problems associated with feeding roughages including availability, storage and processing requirements, and variation in quality. Past research has shown that comparable growth performance and similar times on feed can be attained feeding high amounts of corn silage in the diet (Vance et al 1972a;Brennan et al 1987;Loerch and Fluharty 1998) without impacting carcass traits and meat quality. Results from these studies suggest that high grain diets may be inefficiently utilized.…”

mentioning

confidence: 99%

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Effects of grain source, silage level, and slaughter weight endpoint on growth performance, carcass characteristics, and meat quality in Angus and Charolais steers

McEwen

Mandell²,

Brien³

et al. 2007

Can. J. Anim. Sci.

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2007. Effects of grain source, silage level, and slaughter weight endpoint on growth performance, carcass characteristics, and meat quality in Angus and Charolais steers. Can. J. Anim. Sci. 87: 167-180. Two growth performance trials were conducted to evaluate the effects of grain source (corn vs. barley), corn silage level (15 vs. 50%) and body weight (BW) at slaughter on growth performance, carcass characteristics, and beef quality. Gains were greater (P < 0.01) feeding corn vs. barley to Angus cattle slaughtered at 550 or 600 kg, most likely due to greater (P < 0.02) feed intakes for corn-fed cattle. Despite greater dry matter intake (DMI; P < 0.01) and feed to gain ratios (P < 0.08) with 50% silage diets, cost of production was lower (P < 0.01) feeding 50 vs. 15% silage diets. Grain source by BW endpoint interactions (P < 0.06) were present for Angus steers due to greater average daily gain (ADG) and lower feed to gain and cost of production in corn-fed cattle slaughtered at 600 versus 550 kg, while the converse was the case for barley-fed cattle. Carcass characteristics and palatability attributes were generally not affected (P > 0.05) by grain source or silage level in the diet. Grain source by silage level by slaughter endpoint interactions (P < 0.08) were present for measures of tenderness (shear force and taste panel assessment of tenderness, chewiness, and rate of breakdown). Gains were not affected (P > 0.27) by grain source for Charolais cattle, while barley feeding decreased (P < 0.10) DMI, feed to gain, and costs of production versus corn feeding. Silage level in the diet did not affect (P > 0.10) any growth performance trait in Charolais cattle. Grain source generally did not affect (P > 0.10) most carcass characteristics and shear force with the Charolais steers. The feeding of the 15% silage diet decreased (P < 0.10) measures of leanness and muscling. Many carcass characteristics were affected (P < 0.02) by slaughter endpoint in Charolais steers, with values changing as BW at slaughter increased from 600 to 700 kg. McEwen, P. L., Mandell, I. B., Brien, G. et Campbell, C. P. 2007. Incidence de la nature du grain, de la proportion d'ensilage et du poids à l'abattage sur la croissance, les paramètres de la carcasse et la qualité de la viande chez les bouvillons Angus et Charolais. Can. J. Anim. Sci. 87: 167-180. Les auteurs ont procédé à deux essais de rendement afin d'évaluer l'incidence du type de céréale (maïs c. orge), de la quantité d'ensilage de maïs (15 c. 50 %) et du poids corporel (PC) à l'abattage sur la crois-sance, les paramètres de la carcasse et la qualité de la viande. Pour les bouvillons Angus abattus au poids de 550 ou de 600 kg, le maïs assure un meilleur gain que l'orge (P < 0,01), sans doute parce que les animaux en ingéraient davantage (P < 0,02). Malgré l'ingestion d'une plus grande quantité de matière sèche (P < 0,01) et un meilleur ratio entre l'ingestion et le gain de poids (P < 0,08), l'usage d'une ration contenant 50 % d'ensilage entraîne de moins grands coûts de productio...

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Carcass quality and meat tenderness of Hawaii pasture-finished cattle and Hawaii-originated, mainland feedlot-finished cattle

Kim

Fukumoto

Kim

2012

Trop Anim Health Prod

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The objective of this study was to compare the carcass quality and meat tenderness of Hawaii cattle finished on subtropical pasture with those of mainland US feedlot-finished cattle that were shipped from Hawaii after weaning. Rib-eye steak samples were collected from 30 feedlot-finished cattle harvested at a slaughter house in Washington State, USA and from 13 subtropical pasture-finished cattle harvested at a local slaughter house in Hawaii, then shipped to meat science laboratory at the University of Hawaii, Manoa. Samples were aged for 2 weeks at 4°C and frozen for later proximate analysis and meat tenderness measurement. Feedlot-finished cattle had significantly heavier carcass weight (353 vs 290 kg) and thicker backfat (13.5 vs 6.6 mm), but no significant difference was observed in rib-eye area between the two groups. Marbling score (Small) and United States Department of Agriculture quality grade (Choice) of the pasture-finished beef were not significantly (P < 0.05) different from those of feedlot-finished beef. The shear force value of pasture-finished beef (5.18 kg) was not statistically different (P < 0.05) from that of feedlot-finished beef (4.40 kg). In conclusion, results of this study suggest that Hawaii cattle finished on subtropical pasture produced as tender beef as mainland feedlot-finished cattle with less intramuscular fat.

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Effects of Differing Ratios of Corn Silage and Corn Grain on Feedlot Performance, Carcass Characteristics and Projected Economic Returns

Cited by 15 publications

References 0 publications

The effect of short‐term grain feeding on liveweight gain and beef quality

The effect of short‐term grain feeding on liveweight gain and beef quality

Effects of grain source, silage level, and slaughter weight endpoint on growth performance, carcass characteristics, and meat quality in Angus and Charolais steers

Carcass quality and meat tenderness of Hawaii pasture-finished cattle and Hawaii-originated, mainland feedlot-finished cattle

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