corn silage with and without enzyme-bacteria inoculants on performance, carcass characteristics and meat quality in feedlot finished crossbred bulls

Ensilaje de maíz con y sin inoculantes enzimático-bacterianos sobre el desempeño, las características de la canal y la calidad de la carne en toros cruzados finalizados en corral

Clicks: 323
ID: 155262
2012
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Abstract
Two height cuttings of corn silage with or without enzyme inoculants were evaluated for 68 days on performance, carcass characteristics, meat quality and chemical composition of the Longissimus muscle in crossbred bulls (F1 - ½ Nellore vs. ½ Angus) finished in feedlot. Thirty-two 20-month-old bulls, with initial average weight of 374±25 kg, were kept in individual pens (10 m²). Diets consisted of 50% roughage and 50% concentrate, with an expected 1.80 kg/day weight gain. The experimental design with four diets and eight replications was completely randomized. Different cutting heights, low (25 cm) and high (45 cm), with or without enzyme inoculants, were studied. Live weight, average daily gain, feed intake, feed efficiency, carcass characteristics, muscle, fat and bone percentages at the 11th and 12th ribs, chemical composition of the Longissimus muscle, sum of saturated, mono-unsaturated, poly-unsaturated fatty acids, n-3 fatty acids, n-6 fatty acids, and the poly-unsaturated:saturated and n-6:n-3 relations were determined. Cutting height of silage corn and the use of inoculants did not affect final live weight, average daily gain, feed intake, alimentary efficiency of dry matter, carcass characteristics, meat quality, chemical composition of the Longissimus muscle or fatty acid profile. High cutting of silage corn (45 cm above the ground) and the use of inoculants are not necessary in the case of cattle finished in feedlot, with 1.8 kg daily gain.
Se evaluaron dos alturas de corte de ensilaje de maíz con o sin inoculantes enzimáticos durante 68 días sobre el desempeño productivo, las características de la canal, la calidad de la carne y la composición química del músculo *Longissimus* en toros cruzados (F1 - ½ Nelore vs. ½ Angus) finalizados en confinamiento. Treinta y dos toros de 20 meses de edad, con un peso promedio inicial de 374 ± 25 kg, se mantuvieron en corrales individuales (10 m²). Las dietas consistieron en un 50 % de forraje y un 50 % de concentrado, con una ganancia de peso esperada de 1,80 kg/día. El diseño experimental fue completamente aleatorizado con cuatro dietas y ocho repeticiones. Se estudiaron diferentes alturas de corte, baja (25 cm) y alta (45 cm), con o sin inoculantes enzimáticos. Se determinaron el peso vivo, la ganancia media diaria, el consumo de alimento, la eficiencia alimenticia, las características de la canal, los porcentajes de músculo, grasa y hueso en las costillas 11.ª y 12.ª, la composición química del músculo *Longissimus*, la sumatoria de ácidos grasos saturados, monoinsaturados y poliinsaturados, los ácidos grasos n-3 y n-6, y las relaciones poliinsaturados:saturados y n-6:n-3. La altura de corte del maíz para ensilaje y el uso de inoculantes no afectaron el peso vivo final, la ganancia media diaria, el consumo de alimento, la eficiencia alimenticia de la materia seca, las características de la canal, la calidad de la carne, la composición química del músculo *Longissimus* ni el perfil de ácidos grasos. El corte alto del maíz para ensilaje (45 cm sobre el suelo) y el uso de inoculantes no son necesarios en el caso de bovinos finalizados en confinamiento con una ganancia diaria de 1,8 kg.
Reference Key
fugita2012revistacorn Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Carlos Alberto Fugita;Ivanor Nunes do Prado;Clóves Cabreira Jobim;Fernando Zawadzki;Maribel Velandia Valero;Maria Carla de Oliveira Pires;Rodolpho Martin do Prado;Mônica Chaves Françozo
Journal european journal of lipid science and technology
Year 2012
DOI
10.1590/S1516-35982012000100023
URL
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000100023
Keywords
feed efficiency human health feed intake

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