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Biblioteca (s) : |
INIA La Estanzuela. |
Fecha : |
12/10/2017 |
Actualizado : |
12/10/2017 |
Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
Autor : |
MENDOZA, A.; CAJARVILLE ,C.; REPETTO, J. |
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. |
Título : |
Digestive response of dairy cows fed diets combining fresh forage with a total mixed ration. |
Fecha de publicación : |
2016 |
Fuente / Imprenta : |
Journal of Dairy Science , v. 99, n.11, p. 8779-8789, 2016. |
DOI : |
10.3168/jds.2016-11023 |
Idioma : |
Español |
Notas : |
Article history: Published online: August 18, 2016.//Accepted: May 11, 2016.//Received: February 11, 2016. |
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 |
Palabras claves : |
DIGESTIBILIDAD; DIGESTIBILITY; FERMENTACIÓN RUMINAL; FORRAJE FRESCO; FRESH FORAGE; RACIÓN MIXTA TOTAL; RUMEN FERMENTATION; TOTAL MIXED RATION. |
Thesagro : |
VACAS LECHERAS. |
Asunto categoría : |
-- |
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 : 131 | |
6. | | FIOL, C.; MENDOZA, A. Management of dairy heifers in Uruguay: Effects of feeding level and social environment on prepubertal development. [Manejo de vaquillonas lecheras en Uruguay: Efectos del nivel de alimentación y el ambiente social sobre el desarrollo prepuberal.]. [Manejo de novilhas leiteiras no Uruguai: Efeitos no nível de alimentação e do ambiente social no desenvolvimento pré-puberal.]. Recent advances and emerging trends of dairy production in Uruguay. Agrociencia Uruguay, 2024, Vol.28 (NE1), e1217. https://doi.org/10.31285/AGRO.28.1217 -- OPEN ACCESS. Article history: Received 22 Jun 2023, Accepted 20 Feb 2024, Published 23 May 2024. -- Correspondence: Carolina Fiol, cfiolepera@gmail.com --
Correspondence: Alejandro Mendoza, amendoza@inia.org.uy -- Editor: Mariana Carriquiry,...Tipo: Artículos en Revistas Indexadas Nacionales | Circulación / Nivel : Nacional - -- |
Biblioteca(s): INIA Las Brujas. |
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10. | | MENDOZA, A.; CAJARVILLE ,C.; REPETTO, J. Digestive response of dairy cows fed diets combining fresh forage with a total mixed ration. Journal of Dairy Science , v. 99, n.11, p. 8779-8789, 2016. Article history: Published online: August 18, 2016.//Accepted: May 11, 2016.//Received: February 11, 2016.Tipo: Artículos en Revistas Indexadas Internacionales | Circulación / Nivel : A - 1 |
Biblioteca(s): INIA La Estanzuela. |
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15. | | TALMÓN, D.; MENDOZA, A.; CARRIQUIRY, M. Holstein strain affects energy and feed efficiency in a grazing dairy system. Animal Production Science, 2022, Volume 62, Issue 8, pages 765-773. doi: https://doi.org/10.1071/AN20587 Article history: Submitted 18 October 2020; Accepted 23 November 2021; Published online 20 January 2022.
Handling Editor: Pablo Gregorini.
Corresponding author: Talmón, D.; Departamento de Producción Animal y Pasturas, Facultad de...Tipo: Artículos en Revistas Indexadas Internacionales | Circulación / Nivel : Internacional - -- |
Biblioteca(s): INIA La Estanzuela; INIA Las Brujas. |
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18. | | MENDOZA, A.; CAJARVILLE, C.; REPETTO, J.L. Short communication: Intake, milk production, and milk fatty acid profile of dairy cows fed diets combining fresh forage with a total mixed ration. Journal of Dairy Science, 2016, v.99, no.3, p.1938-1944. Received 14 August 2015, Accepted 15 November 2015, Available online 6 January 2016Tipo: Artículos en Revistas Indexadas Internacionales | Circulación / Nivel : Internacional - -- |
Biblioteca(s): INIA Las Brujas. |
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Registros recuperados : 131 | |
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