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Registro completo
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Biblioteca (s) : |
INIA Las Brujas. |
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Fecha : |
19/07/2023 |
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Actualizado : |
19/07/2023 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Autor : |
SANTANA, A.; CAJARVILLE, C.; MENDOZA, A.; REPETTO, J.L. |
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Afiliación : |
A. SANTANA, Departamento de Producción Animal y Salud de los Sistemas Productivos (IPAV), Facultad de Veterinaria, Universidad de la República, San José, 801000, Uruguay; CECILIA CAJARVILLE, Departamento de Producción Animal y Salud de los Sistemas Productivos (IPAV), Facultad de Veterinaria, Universidad de la República, San José, 801000, Uruguay; ALEJANDRO FRANCISCO MENDOZA AGUIAR, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; JOSÉ LUIS REPETTO, Departamento de Producción Animal y Salud de los Sistemas Productivos (IPAV), Facultad de Veterinaria, Universidad de la República, San José, 801000, Uruguay. |
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Título : |
Including 8 hours of access to alfalfa in 1 or 2 grazing sessions in dairy cows fed a partial mixed ration: Effects on intake, behavior, digestion, and milk production and composition. |
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Fecha de publicación : |
2023 |
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Fuente / Imprenta : |
Journal of Dairy Science. 2023, https://doi.org/10.3168/jds.2022-22743 --- [In Press, Corrected Proof]. OPEN ACCESS. |
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ISSN : |
0022-0302 |
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DOI : |
10.3168/jds.2022-22743 |
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Idioma : |
Inglés |
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Notas : |
Article history: Received 8 September 2022; Accepted 3 March 2023; Available online 18 July 2023. -- Correspondence author: : joselorepetto@gmail.com -- LICENSE: This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). -- FUNDING: This experiment was partially supported by the Agencia Nacional de Innovación e Investigación of Uruguay (Grant FMV_3-2018-1-148846 to A. Santana). -- |
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Contenido : |
The aim of this study was to evaluate the inclusion of alfalfa grazing during 8 h continuous or partitioned in 2 separated sessions of 4 h after each milking, on nutrient intake, digestibility, ruminal fermentation, feeding behavior, milk production, milk composition, and milk fatty acid profile, in late-lactation cows fed a partial mixed ration (PMR). Twelve dairy cows (193 ± 83 d in milk, 584 ± 71 kg of body weight) were housed in individual outdoor pens and assigned to treatments according to a 3 × 3 Latin square design replicated 4 times. The treatments were as follows: (1) control (T0), cows were fed a total mixed ration (TMR) provided ad libitum 20.0% crude protein (CP), 32.2% neutral detergent fiber (NDF); (2) fed a diet combining a PMR which had the same ingredient composition as the TMR (60% of ad libitum intake) + 1 session of 8 h of pasture (T8), continuous grazing alfalfa (Medicago sativa; 20.6% CP, 35.8% NDF) after the p.m. milking; and (3) PMR (60% of ad libitum intake) + 2 daily sessions of 4 h of access to pasture after each milking (T4+4). The experiment lasted 57 d and was divided into 3 periods of 19 d each. The first 12 d of each period was used for diet adaptation, and the last 7 d was used for data collection. No differences among treatments were observed for any of the productive variables, feeding efficiency, or purine derivatives excretion. Cows in T0 had greater intake and apparent digestibility of dry matter, organic matter, and nonfibrous carbohydrates compared with T4+4 and T8. Compared with T0, alfalfa grazing increased the concentration of C18:1 trans-11 and decreased those of C16:0 and C17:0 in milk fat. Cows in T4+4 consumed 1.1 more kg DM/d of alfalfa and N provided by alfalfa in the diet was 3 percentage points higher compared with T8 cows (266 vs. 229 g/d, respectively). In addition, T4+4 cows had a greater daily range of ruminal pH than T8 (0.73 vs. 0.93), and the highest concentrations of NH3-N were recorded during the a.m. grazing session while in T8 cows it occurred during the night. In conclusion, including 8 h of alfalfa grazing in T8 and T4+4 treatments allowed the substitution between 35.8 and 38.7% of the total dry matter intake (DMI) of a PMR (with a similar CP concentration to alfalfa) for pasture, maintaining milk solids production and increasing the C18:1 trans-11 of milk fat compared with a TMR in mid late-lactation cows. In an herbage plus PMR diet, splitting the 1 continuous grazing session of 8 h into 2 sessions of 4 h increased the proportion of energy and N provided by alfalfa pasture and reduced PMR intake, without modifying the total nutrient intake or productive performance of cows. © 2023, The Authors. Published by Elsevier Inc. and Fass Inc. on behalf of the American Dairy Science Association® MenosThe aim of this study was to evaluate the inclusion of alfalfa grazing during 8 h continuous or partitioned in 2 separated sessions of 4 h after each milking, on nutrient intake, digestibility, ruminal fermentation, feeding behavior, milk production, milk composition, and milk fatty acid profile, in late-lactation cows fed a partial mixed ration (PMR). Twelve dairy cows (193 ± 83 d in milk, 584 ± 71 kg of body weight) were housed in individual outdoor pens and assigned to treatments according to a 3 × 3 Latin square design replicated 4 times. The treatments were as follows: (1) control (T0), cows were fed a total mixed ration (TMR) provided ad libitum 20.0% crude protein (CP), 32.2% neutral detergent fiber (NDF); (2) fed a diet combining a PMR which had the same ingredient composition as the TMR (60% of ad libitum intake) + 1 session of 8 h of pasture (T8), continuous grazing alfalfa (Medicago sativa; 20.6% CP, 35.8% NDF) after the p.m. milking; and (3) PMR (60% of ad libitum intake) + 2 daily sessions of 4 h of access to pasture after each milking (T4+4). The experiment lasted 57 d and was divided into 3 periods of 19 d each. The first 12 d of each period was used for diet adaptation, and the last 7 d was used for data collection. No differences among treatments were observed for any of the productive variables, feeding efficiency, or purine derivatives excretion. Cows in T0 had greater intake and apparent digestibility of dry matter, organic matter, and nonfibrous carbohyd... Presentar Todo |
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Palabras claves : |
Fresh forage; Partial mixed ration; Ruminal fermentation. |
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Thesagro : |
ALFALFA. |
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Asunto categoría : |
L02 Alimentación animal |
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URL : |
https://www.sciencedirect.com/science/article/pii/S0022030223003740/pdf
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Marc : |
LEADER 04084naa a2200241 a 4500
001 1064258
005 2023-07-19
008 2023 bl uuuu u00u1 u #d
022 $a0022-0302
024 7 $a10.3168/jds.2022-22743$2DOI
100 1 $aSANTANA, A.
245 $aIncluding 8 hours of access to alfalfa in 1 or 2 grazing sessions in dairy cows fed a partial mixed ration$bEffects on intake, behavior, digestion, and milk production and composition.$h[electronic resource]
260 $c2023
500 $aArticle history: Received 8 September 2022; Accepted 3 March 2023; Available online 18 July 2023. -- Correspondence author: : joselorepetto@gmail.com -- LICENSE: This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). -- FUNDING: This experiment was partially supported by the Agencia Nacional de Innovación e Investigación of Uruguay (Grant FMV_3-2018-1-148846 to A. Santana). --
520 $aThe aim of this study was to evaluate the inclusion of alfalfa grazing during 8 h continuous or partitioned in 2 separated sessions of 4 h after each milking, on nutrient intake, digestibility, ruminal fermentation, feeding behavior, milk production, milk composition, and milk fatty acid profile, in late-lactation cows fed a partial mixed ration (PMR). Twelve dairy cows (193 ± 83 d in milk, 584 ± 71 kg of body weight) were housed in individual outdoor pens and assigned to treatments according to a 3 × 3 Latin square design replicated 4 times. The treatments were as follows: (1) control (T0), cows were fed a total mixed ration (TMR) provided ad libitum 20.0% crude protein (CP), 32.2% neutral detergent fiber (NDF); (2) fed a diet combining a PMR which had the same ingredient composition as the TMR (60% of ad libitum intake) + 1 session of 8 h of pasture (T8), continuous grazing alfalfa (Medicago sativa; 20.6% CP, 35.8% NDF) after the p.m. milking; and (3) PMR (60% of ad libitum intake) + 2 daily sessions of 4 h of access to pasture after each milking (T4+4). The experiment lasted 57 d and was divided into 3 periods of 19 d each. The first 12 d of each period was used for diet adaptation, and the last 7 d was used for data collection. No differences among treatments were observed for any of the productive variables, feeding efficiency, or purine derivatives excretion. Cows in T0 had greater intake and apparent digestibility of dry matter, organic matter, and nonfibrous carbohydrates compared with T4+4 and T8. Compared with T0, alfalfa grazing increased the concentration of C18:1 trans-11 and decreased those of C16:0 and C17:0 in milk fat. Cows in T4+4 consumed 1.1 more kg DM/d of alfalfa and N provided by alfalfa in the diet was 3 percentage points higher compared with T8 cows (266 vs. 229 g/d, respectively). In addition, T4+4 cows had a greater daily range of ruminal pH than T8 (0.73 vs. 0.93), and the highest concentrations of NH3-N were recorded during the a.m. grazing session while in T8 cows it occurred during the night. In conclusion, including 8 h of alfalfa grazing in T8 and T4+4 treatments allowed the substitution between 35.8 and 38.7% of the total dry matter intake (DMI) of a PMR (with a similar CP concentration to alfalfa) for pasture, maintaining milk solids production and increasing the C18:1 trans-11 of milk fat compared with a TMR in mid late-lactation cows. In an herbage plus PMR diet, splitting the 1 continuous grazing session of 8 h into 2 sessions of 4 h increased the proportion of energy and N provided by alfalfa pasture and reduced PMR intake, without modifying the total nutrient intake or productive performance of cows. © 2023, The Authors. Published by Elsevier Inc. and Fass Inc. on behalf of the American Dairy Science Association®
650 $aALFALFA
653 $aFresh forage
653 $aPartial mixed ration
653 $aRuminal fermentation
700 1 $aCAJARVILLE, C.
700 1 $aMENDOZA, A.
700 1 $aREPETTO, J.L.
773 $tJournal of Dairy Science. 2023, https://doi.org/10.3168/jds.2022-22743 --- [In Press, Corrected Proof]. OPEN ACCESS.
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| 43. |  | PÉREZ GOMAR, E.; REICHERT, J.M.; REINERT, D.J.; GARCÍA PRECHAC, F.; BERRETTA, E.J.; MARCHESI, C. Semeadura direta de forrageiras de estação fria em campo natural com aplicação de herbicidas: I. Produção de forragem e contribuição relativa das espécies. [No-till seeding of cool season forages on native pasture with herbicides application: I. Forage yield and relative contribution of plant species]. Ciencia Rural. 2004, v.34, n.3, p.761-767. https://doi.org/10.1590/S0103-84782004000300017 --OPEN ACCESS. Article history: Recebido para publicação 29 Outubro2002; Aprovado em 03 Setembro 2003. -- Parte da Dissertação de Mestrado do primeiro autor apresentada ao Programa de Pós-graduação em Agronomia, Universidade Federal de Santa Maria...| Tipo: Artículos en Revistas Indexadas Internacionales | Circulación / Nivel : B - 1 |
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| 55. | | OLMOS, F.; BALMELLI, G.; PÉREZ GOMAR, E. Estudio de interacciones árbol-pastura 5. Temas varios: Germoplasma, frecuencia cortes; Especies; Metodologías; Agroforestales; Cropofagos In: Berretta, E.J. (Ed.). Reunión del Grupo Técnico Regional del Cono Sur en mejoramiento y utilización de los recursos forrajeros del área tropical y subtropical, Grupos Campos, 14., 1994, Termas del Arapey, Salto, Uruguay. Anales. Montevideo (Uruguay): INIA, 1998. p. 251-252 (INIA Serie Técnica ; 94)| Tipo: Capítulo en Libro Técnico-Científico |
| Biblioteca(s): INIA La Estanzuela; INIA Las Brujas; INIA Tacuarembó. |
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| 56. | | MARCHESI, C.; PÉREZ GOMAR, E.; GARCÍA PRÉCHAC, F. Lotus consociado con avena en siembra directa vs. [i.e. versus] lotus en cobertura, con distintos tipos y dosis de herbicidas sobre suelos de basalto: VI-12. ln: Reunião Sul-Brasileira de Ciência do Solo, 2., 1998, Santa Maria, RS, BR Manejo sustentável do solo: resumos expandidos. Santa Maria, RS: SBCS-NRS, 1998. p. 259-262.| Tipo: Trabajos en Congresos/Conferencias |
| Biblioteca(s): INIA La Estanzuela. |
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