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Registro completo
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Biblioteca (s) : |
INIA La Estanzuela. |
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Fecha : |
12/10/2017 |
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Actualizado : |
12/10/2017 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Autor : |
MENDOZA, A.; CAJARVILLE ,C.; REPETTO, J. |
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Afiliación : |
ALEJANDRO FRANCISCO MENDOZA AGUIAR, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay./Departamento de Producción de Bovinos, Universidad de la República, Ruta 1 km 42.5, 80100, San José, Uruguay.; CECILIA CAJARVILLE, Departamento de Nutrición Animal, Instituto de Producción Animal, Facultad de Veterinaria, Universidad de la República, Ruta 1 km 42.5, 80100, San José, Uruguay.; JOSE LUIS REPETTO CAPELLO, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay.//Departamento de Producción de Bovinos, Universidad de la República, Ruta 1 km 42.5, 80100, San José, Uruguay. |
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Título : |
Digestive response of dairy cows fed diets combining fresh forage with a total mixed ration. |
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Fecha de publicación : |
2016 |
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Fuente / Imprenta : |
Journal of Dairy Science , v. 99, n.11, p. 8779-8789, 2016. |
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DOI : |
10.3168/jds.2016-11023 |
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Idioma : |
Español |
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Notas : |
Article history: Published online: August 18, 2016.//Accepted: May 11, 2016.//Received: February 11, 2016. |
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Contenido : |
Abstract
The objective of this experiment was to quantify the response of dairy cows fed a total mixed ration (TMR) to increasing access to high-quality temperate fresh forage with respect to energy intake, rumen fermentation, microbial protein flow, passage rate, nutrient digestion and utilization, and metabolic and endocrine profiles. Nine Holstein cows fed a TMR were assigned to the following treatments according to a 3×3 Latin square replicated 3 times with 20-d periods and sampling on the last 10 d of each period: 0 (T0), 4 (T4), or 8 (T8) h of daily access to fresh forage. The forage (Lolium multiflorum; 17.1% crude protein, 26.5% acid detergent fiber) was cut daily and offered ad libitum beginning at 0800h, and a TMR (16.1% crude protein, 22.9% acid detergent fiber) was offered ad libitum during the remaining time. Energy intake and balance were higher in T0 than in T8, which was reflected in higher blood glucose and insulin concentrations in T0. Total volatile fatty acid concentrations in the rumen were higher in T0 and T4 than in T8, pH was lower in T4 than in T8, and ammonia-N was higher in T0 than in T8. No differences among treatments were detected in microbial protein flow to the duodenum, digestibility of nutrients, apparent efficiency of energy, or N utilization for milk production, but the total mean retention time of feed in the digestive tract was higher in T8 than in T0. It is concluded that more than 4h of daily access to high-quality fresh forage in the diet of dairy cows fed a TMR reduced energy intake and balance but had no effects on nutrient digestion or utilization. MenosAbstract
The objective of this experiment was to quantify the response of dairy cows fed a total mixed ration (TMR) to increasing access to high-quality temperate fresh forage with respect to energy intake, rumen fermentation, microbial protein flow, passage rate, nutrient digestion and utilization, and metabolic and endocrine profiles. Nine Holstein cows fed a TMR were assigned to the following treatments according to a 3×3 Latin square replicated 3 times with 20-d periods and sampling on the last 10 d of each period: 0 (T0), 4 (T4), or 8 (T8) h of daily access to fresh forage. The forage (Lolium multiflorum; 17.1% crude protein, 26.5% acid detergent fiber) was cut daily and offered ad libitum beginning at 0800h, and a TMR (16.1% crude protein, 22.9% acid detergent fiber) was offered ad libitum during the remaining time. Energy intake and balance were higher in T0 than in T8, which was reflected in higher blood glucose and insulin concentrations in T0. Total volatile fatty acid concentrations in the rumen were higher in T0 and T4 than in T8, pH was lower in T4 than in T8, and ammonia-N was higher in T0 than in T8. No differences among treatments were detected in microbial protein flow to the duodenum, digestibility of nutrients, apparent efficiency of energy, or N utilization for milk production, but the total mean retention time of feed in the digestive tract was higher in T8 than in T0. It is concluded that more than 4h of daily access to high-quality fresh forage in the ... Presentar Todo |
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Palabras claves : |
DIGESTIBILIDAD; DIGESTIBILITY; FERMENTACIÓN RUMINAL; FORRAJE FRESCO; FRESH FORAGE; RACIÓN MIXTA TOTAL; RUMEN FERMENTATION; TOTAL MIXED RATION. |
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Thesagro : |
VACAS LECHERAS. |
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Asunto categoría : |
-- |
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Marc : |
LEADER 02537naa a2200277 a 4500
001 1057652
005 2017-10-12
008 2016 bl uuuu u00u1 u #d
024 7 $a10.3168/jds.2016-11023$2DOI
100 1 $aMENDOZA, A.
245 $aDigestive response of dairy cows fed diets combining fresh forage with a total mixed ration.$h[electronic resource]
260 $c2016
500 $aArticle history: Published online: August 18, 2016.//Accepted: May 11, 2016.//Received: February 11, 2016.
520 $aAbstract The objective of this experiment was to quantify the response of dairy cows fed a total mixed ration (TMR) to increasing access to high-quality temperate fresh forage with respect to energy intake, rumen fermentation, microbial protein flow, passage rate, nutrient digestion and utilization, and metabolic and endocrine profiles. Nine Holstein cows fed a TMR were assigned to the following treatments according to a 3×3 Latin square replicated 3 times with 20-d periods and sampling on the last 10 d of each period: 0 (T0), 4 (T4), or 8 (T8) h of daily access to fresh forage. The forage (Lolium multiflorum; 17.1% crude protein, 26.5% acid detergent fiber) was cut daily and offered ad libitum beginning at 0800h, and a TMR (16.1% crude protein, 22.9% acid detergent fiber) was offered ad libitum during the remaining time. Energy intake and balance were higher in T0 than in T8, which was reflected in higher blood glucose and insulin concentrations in T0. Total volatile fatty acid concentrations in the rumen were higher in T0 and T4 than in T8, pH was lower in T4 than in T8, and ammonia-N was higher in T0 than in T8. No differences among treatments were detected in microbial protein flow to the duodenum, digestibility of nutrients, apparent efficiency of energy, or N utilization for milk production, but the total mean retention time of feed in the digestive tract was higher in T8 than in T0. It is concluded that more than 4h of daily access to high-quality fresh forage in the diet of dairy cows fed a TMR reduced energy intake and balance but had no effects on nutrient digestion or utilization.
650 $aVACAS LECHERAS
653 $aDIGESTIBILIDAD
653 $aDIGESTIBILITY
653 $aFERMENTACIÓN RUMINAL
653 $aFORRAJE FRESCO
653 $aFRESH FORAGE
653 $aRACIÓN MIXTA TOTAL
653 $aRUMEN FERMENTATION
653 $aTOTAL MIXED RATION
700 1 $aCAJARVILLE ,C.
700 1 $aREPETTO, J.
773 $tJournal of Dairy Science$gv. 99, n.11, p. 8779-8789, 2016.
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INIA La Estanzuela (LE) |
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| Registros recuperados : 19 | |
| 1. |  | BAETHGEN, W.; GIMÉNEZ, A.; CASTAÑO, J.P.; OLIVERA, L.; MAYEREGGER, E.; PEKHOLTZ, F.; REBELLA, C.; HARTMANN, T.; DI BELLA, C.; STRASCHNOY, J. Desarrollo de metodologías y herramientas para el sistema de información y monitoreo. In: GIMENEZ, A.; BAETHGEN, W. (Eds.). SIMERPA: Sistema de información y monitoreo para la evaluación de riesgos climáticos en la producción agrícola de Uruguay y Paraguay. Montevideo (Uruguay): INIA, 2007. p. 1-25 (INIA Serie Técnica ; 162) Incluye CD-ROM| Tipo: Capítulo en Libro Técnico-Científico |
| Biblioteca(s): INIA Las Brujas; INIA Tacuarembó. |
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| 15. | | OTERO, A.; GOÑI, C.; CASTAÑO, J.P. Condiciones climáticas en el ciclo productivo 2008-2009 In: INIA (Instituto Nacional de Investigación Agropecuaria); Programa Nacional Producción Citrícola. Reduciendo incertidumbres: el riego en la productividad de los cítricos. Avances de investigación. Salto Grande, Salto (Uruguay): INIA, 2009. p. 2-12 (INIA Serie Actividades de Difusión ; 576)| Biblioteca(s): INIA Las Brujas; INIA Tacuarembó. |
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| 17. | | SCHAAFSMA, A.W.; HOOKER, D.C.; PIÑEIRO, M.; DÍAZ DE ACKERMANN, M.; PEREYRA, S.; CASTAÑO, J.P. Pre-harvest forecasting of deoxynivalenol for regulatory action in wheat grain in Uruguay using readily available weather inputs. In NYAPAU, H.; TRUJILLO, S.; VAN EGMOND, H.; PARK, D. (Ed.). Mycotoxins and phycotoxins: advances in determination, toxicology and exposure management. Wageningen, NL: WAP, 2006. p. 227-238.| Tipo: Capítulo en Libro Técnico-Científico |
| Biblioteca(s): INIA La Estanzuela. |
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| Registros recuperados : 19 | |
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