Chemical composition, intake, ruminal fermentation, plasma metabolites and hormones in range steers

Murillo-Ortiz, Manuel; Herrera-Torres, Esperanza; Villarreal-Rodríguez, Guadalupe; Ruiz-Barrera, Oscar

doi:10.1080/09712119.2012.739095

Cited by 2 publications

(2 citation statements)

References 26 publications

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“…Protein is often a limiting nutrient when cattle graze on dormant rangelands ( Obeidat et al, 2002 ). However, protein supplementation may enhance intake of dormant range forage and improve beef cattle performance ( Murillo et al, 2013 ). Moreover, supplying additional protein in the form of degradable ruminal protein and ruminal undegradable protein may influence nutrient partitioning via effects on glucose supply and metabolism ( Waterman et al, 2006 ).…”

Section: Introductionmentioning

confidence: 99%

Effect of Supplemental Corn Dried Distillers Grains with Solubles Fed to Beef Steers Grazing Native Rangeland during the Forage Dormant Season

Murillo

Herrera

Ruiz

et al. 2015

Asian Australas. J. Anim. Sci

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Two experiments were conducted to evaluate the effects of the level of corn dry distillers grains with solubles (CDDGS) supplementation on growing performance, blood metabolites, digestion characteristics and ruminal fermentation patterns in steers grazing dormant forage. In Exp. 1, of growth performance, 120 steers (204±5 kg initial body weight [BW]) were distributed randomly into 3 groups (each of 40 steers), which were provided with the following levels of CDDGS supplement: 0%, 0.25%, or 0.50% BW. All groups of steers were grazed for 30 days in each of 3 grazing periods (March, April, and May). Approximately 1,000 ha of the land was divided with electric fencing into 3 equally sized pastures (333 ha in size). Blood samples were collected monthly from 20 steers in each grazing group for analysis of glucose (G), urea-nitrogen (UN) and non-esterified fatty acids. Final BW, average daily gain (ADG) and supplement conversion (CDDGS-C) increased with increasing levels of CDDGS supplementation (p<0.05).The CDDGS supplementation also increased the plasma G and UN concentrations (p<0.05). In Exp. 2, of digestive metabolism, 9 ruminally cannulated steers (BW = 350±3 kg) were distributed, following a completely randomized design, into groups of three in each pasture. The ruminally cannulated steers were provided the same levels of CDDGS supplementation as in the growing performance study (0%, 0.25%, and 0.50% BW), and they grazed along with the other 40 steers throughout the grazing periods. The dry matter intake, crude protein intake, neutral detergent fiber intake (NDFI), apparent digestibility of dry matter (ADDM), crude protein (ADCP) and neutral detergent fiber (ADNDF) increased with increasing levels of CDDGS supplementation (p<0.05). The ruminal degradation rates of CP (kdCP), NDF (kdNDF) and passage rate (kp) also increased with increasing levels of CDDGS supplementation (p<0.05). Ruminal ammonia nitrogen (NH3-N) and propionate concentrations also increased with increasing levels of CDDGS supplementation (p<0.05). However, acetate concentrations decreased with increasing levels of CDDGS supplementation (p<0.05). Liquid dilution rate increased with increasing levels of CDDGS supplementation but ruminal liquid volume decreased (p<0.05). On the basis of these findings, we can conclude that CDDGS supplementation enhanced the productive performance of cattle grazing native rangeland without negatively affecting forage intake, glucose and urea-nitrogen blood concentrations, ruminal degradation and ruminal fermentation patterns.

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Section: Introductionmentioning

confidence: 99%

Effect of Supplemental Corn Dried Distillers Grains with Solubles Fed to Beef Steers Grazing Native Rangeland during the Forage Dormant Season

Murillo

Herrera

Ruiz

et al. 2015

Asian Australas. J. Anim. Sci

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“…La caracterización bromatológica y nutricional de arbustivas nativas con potencial forrajero permite evaluar el potencial productivo de pastizales y agostaderos, la suplementación apropiada del ganado y programas de reforestación (Ramírez, 2003). Los pastizales en regiones semiáridas de México son continuamente afectados por la sequía y el sobrepastoreo (Murillo-Ortiz et al, 2013). La baja precipitación pluvial y la irregular distribución de las lluvias acentúan la baja productividad del ganado en la época de estiaje, propiciada por la baja calidad y cantidad de pastos.…”

Section: Introductionunclassified

PERFIL BROMATOLÓGICO Y NUTRICIONAL DE Dalea bicolor (Willdenow) EN REGIONES SEMIÁRIDAS DE ZACATECAS, MÉXICO

García-Cervantes,

Gutiérrez-Bañuelos,

Reveles-Torres

et al. 2023

RevFitotecMex

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La caracterización nutricional de arbustivas forrajeras proporciona bases para la valoración adecuada de agostaderos y pastizales, la suplementación apropiada del ganado y programas de reforestación. El objetivo de este estudio fue evaluar el perfil bromatológico y la composición nutricional de Dalea bicolor (Willdenow). La arbustiva se muestreó durante las cuatro estaciones del año, pero presentó follaje sólo en otoño y verano. Se utilizaron 20 muestras por estación, dentro de una parcela de 20 ha situada en el municipio de Villa de Cos, Zacatecas, México, caracterizado por su clima semiárido. Las variables medidas fueron materia seca (MS), materia orgánica (MO), cenizas, proteína cruda (PC), fibra detergente neutra (FDN), fibra detergente ácida (FDA), energía neta de mantenimiento (ENm), energía neta de ganancia (ENg), consumo en materia seca calculado como porcentaje de peso vivo del animal (CMS, %PV), digestibilidad de la materia seca (DMS) y valor relativo del forraje (VRF). Las evaluaciones bromatológicas se realizaron utilizando métodos estándar y las nutricionales se estimaron utilizando los resultados bromatológicos. En todas las variables se observaron diferencias estadísticas (P ≤ 0.05) entre estaciones del año. En los resultados bromatológicos, la PC fue 9.69 vs 13.51, % la FDN 56.97 vs 63.59 %, la FDA 44.56 vs 42.25 %, respectivamente para otoño y verano. En el perfil nutricional promediaron, la ENm 1.01 vs 1.04 Mcal kg-1, la ENg 0.65 vs 0.68 Mcal kg-1, respectivamente para otoño y verano. Se concluye que Dalea provee la PC para producción en pastoreo, que se estima entre 70 y 100 g por kg de materia seca, y proporciona escasa ENg.

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Chemical composition, intake, ruminal fermentation, plasma metabolites and hormones in range steers

Cited by 2 publications

References 26 publications

Effect of Supplemental Corn Dried Distillers Grains with Solubles Fed to Beef Steers Grazing Native Rangeland during the Forage Dormant Season

Effect of Supplemental Corn Dried Distillers Grains with Solubles Fed to Beef Steers Grazing Native Rangeland during the Forage Dormant Season

PERFIL BROMATOLÓGICO Y NUTRICIONAL DE Dalea bicolor (Willdenow) EN REGIONES SEMIÁRIDAS DE ZACATECAS, MÉXICO

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