1994
DOI: 10.2527/1994.7281943x
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Dietary energy source and density: effects of roughage source, roughage equivalent, tallow level, and steer type on feedlot performance and carcass characteristics

Abstract: The effects of roughage level (10, 20, or 30% roughage equivalent [RE]), roughage source (alfalfa vs cottonseed hulls), roughage regimen (constant RE vs 2% RE during the mid-finishing period), tallow level (1.2 vs 4.6%), and steer type (British crossbred [BRITX] vs Bos indicus crosses [BRX]) were evaluated in three experiments with a common allotment and several overlapping treatments. Steers (n = 432; initial weight = 326 +/- 26 kg) were divided into three BW blocks and allotted randomly to 72 pens and 24 tre… Show more

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Cited by 82 publications
(56 citation statements)
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“…Woody et al (1983) evaluated the effect of grain level on performance of growing and finishing steers and also observed that animals fed 90 % concentrate gained 7 % faster than those fed 70 % grain. Bartle et al (1994) observed linear decreases in ADG as roughage level increased. These authors reported that there was only a small difference between 10 and 20 % dietary roughage (0.01 kg d ).…”
Section: Methodsmentioning
confidence: 83%
“…Woody et al (1983) evaluated the effect of grain level on performance of growing and finishing steers and also observed that animals fed 90 % concentrate gained 7 % faster than those fed 70 % grain. Bartle et al (1994) observed linear decreases in ADG as roughage level increased. These authors reported that there was only a small difference between 10 and 20 % dietary roughage (0.01 kg d ).…”
Section: Methodsmentioning
confidence: 83%
“…As características de carcaça observadas neste trabalho também são semelhantes às encontradas por Bartle & Preston (1992a), Bartle & Preston (1992b) e Bartle et al (1994).…”
Section: Resultsunclassified
“…Para evitar esses problemas seria necessário um processo gradativo, no qual níveis decrescentes de volumosos seriam fornecidos para uma melhor adaptação dos microorganismos do rúmen. Bartle & Preston (1991), Bartle & Preston (1992b) e Bartle et al (1994) compararam desempenho e características de carcaça de animais alimentados com diferentes níveis de volumoso. Os animais alimentados com restrição de volumoso ingeriram menos tiveram o mesmo ganho e tenderam a ser mais eficientes em relação ao grupo alimentado com 10% de volumoso.…”
Section: R Bras Zootec V31 N2 P749-756 2002unclassified
“…Apesar do elevado teor de FDN e FDA da casca de algodão, este subproduto tem a característica peculiar de não afetar o consumo. Ao contrário, diversos autores relataram aumento linear do consumo por bovinos de corte (Moore et al, 1990;Bartle et al, 1994;Magalhães et al, 2003) e de leite (Harris et al, 1983;Van Horn et al, 1984;Morales et al, 1989;Adams et al, 1995;Gu et al, 1996;Gu & Moss, 1996; citados por Hall & Akinyode, 2000) alimentados com este subproduto.…”
Section: Introductionunclassified