Influence of barley silage:concentrate ratio on rate and efficiency of liveweight gain, diet digestibility and carcass characteristics of beef steers

Hironaka, R.; Freeze, Brian S.; Kozub, G. C.; Beauchemin, K. A.

doi:10.4141/cjas94-070

Cited by 8 publications

(7 citation statements)

References 12 publications

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“…During the first backgrounding phase, the ADG of EBC cattle fed the hay cube diet was comparable to values reported by Mir and Mir (1994a,b) for similar crossbred steers fed 75% alfalfa and 25% grain, but better than the ADG reported by Hironaka et al (1994) for cattle fed all silage diets.…”

Section: Discussionsupporting

confidence: 84%

“…Inclusion of barley grain at 35% of dry matter to the diet improved the ADG of EBC cattle to expected gains (Hironaka et al 1994;Mathison and Engstrom 1995a) suggesting that the energy deficit in the hay cube diet affected both ADG and F/G similarly in both the EBC and WC cattle. Wagyu crossbred cattle are claimed to utilize poorer quality feed better than other types of cattle thus it was expected that WC cattle would have better F/G when fed the hay cube diet but none was observed.…”

Section: Discussionmentioning

confidence: 94%

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Effect of feeding barley based diets on animal performance, carcass characteristics and meat quality of crossbred beef cattle with and without Wagyu genetics

Mir¹,

Bailey²,

Mir³

et al. 1997

Can. J. Anim. Sci.

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, W. M. 1997. Effect of feeding barley based diets on animal performance, carcass characteristics and meat quality of crossbred beef cattle with and without Wagyu genetics. Can. J. Anim. Sci. 77: 655-662. Growth performance, carcass characteristics and meat quality of European and British crossbred (EBC; no Wagyu genetics; 28 heifers and 30 steers) cattle were compared with crossbred cattle with 75% Wagyu genetics (WC; seven heifers and 14 steers) to determine the influence of Wagyu genetics on marbling grade of beef cattle fed barley-based diets in a factorial design experiment. Weaned calves (250 d average age) were fed, one of two diets (diet 1, 35% barley grain; diet 2, 40% hay cubes on DM basis, with barley silage, protein and vitamin/mineral premix) for 84 d and then fed diet 1 until they weighed 394 to 432 kg. All cattle were finished on an 80% (DM basis) rolled barley diet and slaughtered. Carcasses were graded and samples procured for meat quality and Warner-Bratzler shear force determination. Number of days on backgrounding diets to arrive at target weight (380 kg) was greater (P < 0.05) for the WC cattle, owing to relatively lower ADG, but days on the finishing diet were fewer for these cattle, compared with EBC cattle. Warm carcass yield (dressing percent) was greater (P < 0.05), but backfat depth was lower (P < 0.05) for WC cattle relative to that of EBC cattle, yet proportion of lean meat yield was similar. Eighty three percent of WC cattle carcasses had Canada AAA (small or more) marbling grade compared with 13% for EBC cattle carcasses. Mean shear force of meat samples from EBC and WC cattle was 4.2 and 3.8 kg, respectively. Results indicated that the extent of carcass marbling can be increased by incorporating Wagyu genetics but age at slaughter of WC cattle was 19 d greater than that of EBC cattle and carcass size was reduced. For personal use only. CANADIAN JOURNAL OF ANIMAL SCIENCEAlthough reported correlation coefficients among marbling fat, tenderness and organoleptic appeal of meat are not substantial (Wheeler et al. 1994), they are of sufficient magnitude, that the retail and food service industries specify minimal levels of intramuscular fat when purchasing cuts of meat. In Canada, approximately 20-25% of carcasses have marbling scores qualifying them for the Canada AAA grade. The frequency of carcasses which grade AAA or better for marbling needs to be increased to 50% to meet the requirement of current domestic and export markets (Jones et al. 1991;Jones 1996). In order to enhance the percentage of carcasses that grade Canada AAA, the use of Wagyu genetics requires consideration because the Wagyu beef cattle are acclaimed for their ability to deposit large amount of intramuscular fat .Inclusion of the Japanese American Wagyu in breeding programs has been described as a strategy to improve the marbling potential of beef carcasses (Barker et al. 1995). Lunt et al. (1993) compared growth rate and carcass characteristics of Angus and American Wagyu cattle and found that Wagyu steers exhibi...

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Section: Discussionsupporting

confidence: 84%

Section: Discussionmentioning

confidence: 94%

Effect of feeding barley based diets on animal performance, carcass characteristics and meat quality of crossbred beef cattle with and without Wagyu genetics

Mir¹,

Bailey²,

Mir³

et al. 1997

Can. J. Anim. Sci.

View full text Add to dashboard Cite

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“…Na Tabela 4, são apresentadas as médias de consumo das variáveis citadas acima, que permaneceram constantes para os níveis de concentrado nas dietas e próximas ao valor estipulado pelo NRC (1988). Parrott et al (1968) e Meiske e Goodrich (1972), citados por HIRONAKA et al (1994), afirmaram que a ingestão alimentar de matéria seca pode ser menor em dietas constituídas exclusivamente de concentrados que aquelas com 5 a 20% de forragem.…”

Section: Resultsunclassified

“…Os resultados obtidos estão de acordo com HIRONAKA et al (1994), com novilhos Hereford com peso inicial de 218 kg, observando que o ganho de peso médio diário aumentou rapidamente com o acréscimo do nível de concentrado nas dietas, mas a taxa de ganho foi semelhante para os animais alimentados com níveis de concentrado acima de 65%.…”

Section: Levels Of Concentrate (%)unclassified

“…A resposta animal à adição de concentrado é curvilínea e não-linear (HIRONAKA et al, 1994), entretanto, neste trabalho, foi linear com o aumento do nível de concentrado nas dietas. De acordo com PRESTON e WILLIS (1974), o nível ótimo de concentrado na ração é variável e tem, como fatores determinantes, sexo, raça e idade do animal, qualidade do volumoso e concentrado, entre outros.…”

Section: Levels Of Concentrate (%)unclassified

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Influência do Plano Nutricional sobre o Desempenho de Bezerros Holandeses para Produção de Vitelos

Ribeiro¹,

Pereira

Oliveira

et al. 2001

R. Bras. Zootec.

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RESUMO -O experimento foi realizado com 20 bezerros holandeses, todos machos não castrados, com 75 dias de idade e peso vivo médio de 76 kg, com o objetivo de avaliar o desempenho e a viabilidade econômica de produzir vitelos. Os animais foram alimentados com dietas contendo 45, 60, 75 e 90% de concentrado. As dietas foram constituídas de feno de capim-coastcross, fubá de milho, farelo de soja e mistura mineral. O delineamento experimental foi em blocos casualizados, com quatro tratamentos e cinco blocos. Antes do início do experimento, todos os animais foram submetidos a um mesmo sistema de aleitamento. O período experimental foi variável para cada tratamento, em que os animais eram abatidos à medida que atingiam o peso médio de 200 kg. As análises de variância para consumo de matéria seca, consumo de proteína bruta e conversão alimentar da matéria seca mostraram não haver efeito significativo dos níveis de concentrado nas dietas. Todavia, as análises de regressão mostraram efeito linear decrescente, com o aumento do nível de concentrado, para o consumo de fibra em detergente neutro, e aumento linear para o ganho de peso diário, proporcionando redução de 35 dias no confinamento para os animais alimentados com dietas contendo 90% de concentrado. Efeitos significativos devido ao nível de concentrado também foram verificados na conversão alimentar da fibra detergente neutro e da proteína bruta, sendo que a melhora da eficiência alimentar ocorreu com o acréscimo de concentrado na dieta. Os custos de produção indicaram a viabilidade de produzir vitelos utilizando bezerros holandeses.Palavras-chave: bezerros holandeses, custo de produção, desempenho, níveis de concentrado, vitelos Influence of Nutritional Plane on Performance of Holstein Veal CalvesABSTRACT -The experiment was carried out with 20 intact Holsteins male calves, average live weight of 75 kg and 76 days old, to evaluate the performance and the economical viability to produce veal calves. The calves were fed diets containing 45, 60, 75 and 90% of concentrate. Diets were composed of coastcross hay, ground corn, soybean meal and mineral mixture, fed ad libitum. The experimental design was a complete randomized blocks, with four treatments and five replicates. Before the beginning of the experiment, all the animals were submitted to the same nursing system. The experimental period was different for each treatment, since the animals were slaughtered as they reached an average weight of 200 kg. The variance analyses for dry matter and crude protein intake and dry matter conversion showed no significant effect of the concentrate levels in the diets. However, the regression analyses showed a decreasing linear effect as the concentrate level for the neutral detergent fiber intake increased, and a linear increase in the average daily gain, reducing in 35 days of feedlot for the animals fed 90% of concentrate. Significant effects due to the concentrate level were also observed for neutral detergent fiber and crude protein feed:gain ratio, and the improvement of the...

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Comparison of supplementary concentrate levels with grass silage, separate or total mixed ration feeding, and duration of finishing in beef steers

Keane¹,

Drennan²,

Moloney³

2006

Livestock Science

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Influence of barley silage:concentrate ratio on rate and efficiency of liveweight gain, diet digestibility and carcass characteristics of beef steers

Cited by 8 publications

References 12 publications

Effect of feeding barley based diets on animal performance, carcass characteristics and meat quality of crossbred beef cattle with and without Wagyu genetics

Effect of feeding barley based diets on animal performance, carcass characteristics and meat quality of crossbred beef cattle with and without Wagyu genetics

Influência do Plano Nutricional sobre o Desempenho de Bezerros Holandeses para Produção de Vitelos

Comparison of supplementary concentrate levels with grass silage, separate or total mixed ration feeding, and duration of finishing in beef steers

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