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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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INIA Las Brujas (LB) |
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 | Acceso al texto completo restringido a Biblioteca INIA Las Brujas. Por información adicional contacte bibliolb@inia.org.uy. |
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Registro completo
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Biblioteca (s) : |
INIA Las Brujas. |
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Fecha actual : |
05/03/2024 |
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Actualizado : |
05/03/2024 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Circulación / Nivel : |
Internacional - -- |
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Autor : |
CARDOZO, G.; AYALA, W.; LEZAMA, F.; REYNO, R.; CUADRO, R.; MICHELINI, D.; JAURENA, M.; LATTANZI, F. |
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Afiliación : |
GERONIMO AGUSTIN CARDOZO CABANELAS, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; WALTER FELIZARDO AYALA SILVERA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; F. LEZAMA, Departamento de Sistemas Ambientales, Facultad de Agronomía, Universidad de la República, Av. Garzón 780, Montevideo, 12900, Uruguay; RAFAEL ALEJANDRO REYNO PODESTA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; WASHINGTON ROBIN CUADRO LOPEZ, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; D. MICHELINI, Estación Experimental de Facultad de Agronomía en Salto, Facultad de Agronomía, Universidad de la República, Ruta 31 km 21.5, Salto, 50000, Uruguay; MARTIN ALEJANDRO JAURENA BARRIOS, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; FERNANDO A. LATTANZI, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
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Título : |
Limited response to phosphorus fertilization in native South American grasslands across a productivity gradient despite low phosphorus concentrations in grassland herbage. |
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Fecha de publicación : |
2024 |
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Fuente / Imprenta : |
Plant and Soil. 2024. https://doi.org/10.1007/s11104-024-06562-5 |
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ISSN : |
0032-079X (print); 1573-5036 (electronic) |
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DOI : |
10.1007/s11104-024-06562-5 |
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Idioma : |
Inglés |
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Notas : |
Article history: Received 10 October 2023; Accepted 14 February 2024; Published 26 February 2024. -- Responsible Editor: N. Jim Barrow. --
Correspondence: G.A. Cardozo, Instituto Nacional de Investigación Agropecuaria (INIA), Estación Experimental INIA Treinta y Tres, Ruta 8 km
281, Treinta y Tres 33000, Uruguay. e-mail: gcardozo@inia.org.uy -- Supplementary Information: The online version contains supplementary material available at https://doi.org/10.1007/s11104-024-06562-5 -- Funding: This work was supported by the National Agency for Research and Innovation (ANII-Uruguay) [grant numbers POS_NAC_2016_1_130414 y FSA_PI_2018_1_148653]. -- |
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Contenido : |
ABSTRACT.- Background and aims: Since 1750, the species-rich grasslands native to the Río de la Plata basin in southern South America have sustained low-input livestock production. Typically, these grasslands have low herbage phosphorus (P) concentration, and P deficiency in livestock is not rare. Worldwide, P fertilization is used to increase the productivity and nutritive value of grasslands, but it is unknown whether the Río de la Plata grasslands are limited by P availability. -- Methods: We quantified the response of aboveground net primary productivity (ANPP) to P supply in a meta-analysis of 39 trials carried out between 1968 and 2016 comprising 285 independent comparisons (cases) between unfertilized controls and P-fertilized treatments. -- Results: The ANPP of unfertilized controls ranged from 400 to 17,500 kg dry matter (DM) ha-1 y-1. In 74% of cases, P fertilization did not increase ANPP. The average response was therefore low, at 399 kg DM ha-1 (relative effect + 15%), and largely unrelated to ANPP, vegetation, or soil characteristics. Conversely, in 59% of cases herbage P concentration did increase, particularly at high fertilization rates (average 0.43 mg P g DM-1; relative effect + 36%). -- Conclusions: Despite low herbage P concentration, the current ANPP of Río de la Plata grasslands seems little limited by P supply. Luxury consumption was common in response to P fertilization. Prevailing low herbage nitrogen-to-phosphorus ratios -below 11:1 in 65% of unfertilized controls- suggest nitrogen may be limiting ANPP. In this legume-scarce ecosystem, P fertilization is unlikely to boost productivity and may pose an environmental risk. © 2024 Springer Nature MenosABSTRACT.- Background and aims: Since 1750, the species-rich grasslands native to the Río de la Plata basin in southern South America have sustained low-input livestock production. Typically, these grasslands have low herbage phosphorus (P) concentration, and P deficiency in livestock is not rare. Worldwide, P fertilization is used to increase the productivity and nutritive value of grasslands, but it is unknown whether the Río de la Plata grasslands are limited by P availability. -- Methods: We quantified the response of aboveground net primary productivity (ANPP) to P supply in a meta-analysis of 39 trials carried out between 1968 and 2016 comprising 285 independent comparisons (cases) between unfertilized controls and P-fertilized treatments. -- Results: The ANPP of unfertilized controls ranged from 400 to 17,500 kg dry matter (DM) ha-1 y-1. In 74% of cases, P fertilization did not increase ANPP. The average response was therefore low, at 399 kg DM ha-1 (relative effect + 15%), and largely unrelated to ANPP, vegetation, or soil characteristics. Conversely, in 59% of cases herbage P concentration did increase, particularly at high fertilization rates (average 0.43 mg P g DM-1; relative effect + 36%). -- Conclusions: Despite low herbage P concentration, the current ANPP of Río de la Plata grasslands seems little limited by P supply. Luxury consumption was common in response to P fertilization. Prevailing low herbage nitrogen-to-phosphorus ratios -below 11:1 in 65% of unfert... Presentar Todo |
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Palabras claves : |
"Río de la Plata" grasslands; Forage production; Nitrogen; Stoichiometric changes. |
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Asunto categoría : |
F01 Cultivo |
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Marc : |
LEADER 03290naa a2200289 a 4500
001 1064498
005 2024-03-05
008 2024 bl uuuu u00u1 u #d
022 $a0032-079X (print); 1573-5036 (electronic)
024 7 $a10.1007/s11104-024-06562-5$2DOI
100 1 $aCARDOZO, G.
245 $aLimited response to phosphorus fertilization in native South American grasslands across a productivity gradient despite low phosphorus concentrations in grassland herbage.$h[electronic resource]
260 $c2024
500 $aArticle history: Received 10 October 2023; Accepted 14 February 2024; Published 26 February 2024. -- Responsible Editor: N. Jim Barrow. -- Correspondence: G.A. Cardozo, Instituto Nacional de Investigación Agropecuaria (INIA), Estación Experimental INIA Treinta y Tres, Ruta 8 km 281, Treinta y Tres 33000, Uruguay. e-mail: gcardozo@inia.org.uy -- Supplementary Information: The online version contains supplementary material available at https://doi.org/10.1007/s11104-024-06562-5 -- Funding: This work was supported by the National Agency for Research and Innovation (ANII-Uruguay) [grant numbers POS_NAC_2016_1_130414 y FSA_PI_2018_1_148653]. --
520 $aABSTRACT.- Background and aims: Since 1750, the species-rich grasslands native to the Río de la Plata basin in southern South America have sustained low-input livestock production. Typically, these grasslands have low herbage phosphorus (P) concentration, and P deficiency in livestock is not rare. Worldwide, P fertilization is used to increase the productivity and nutritive value of grasslands, but it is unknown whether the Río de la Plata grasslands are limited by P availability. -- Methods: We quantified the response of aboveground net primary productivity (ANPP) to P supply in a meta-analysis of 39 trials carried out between 1968 and 2016 comprising 285 independent comparisons (cases) between unfertilized controls and P-fertilized treatments. -- Results: The ANPP of unfertilized controls ranged from 400 to 17,500 kg dry matter (DM) ha-1 y-1. In 74% of cases, P fertilization did not increase ANPP. The average response was therefore low, at 399 kg DM ha-1 (relative effect + 15%), and largely unrelated to ANPP, vegetation, or soil characteristics. Conversely, in 59% of cases herbage P concentration did increase, particularly at high fertilization rates (average 0.43 mg P g DM-1; relative effect + 36%). -- Conclusions: Despite low herbage P concentration, the current ANPP of Río de la Plata grasslands seems little limited by P supply. Luxury consumption was common in response to P fertilization. Prevailing low herbage nitrogen-to-phosphorus ratios -below 11:1 in 65% of unfertilized controls- suggest nitrogen may be limiting ANPP. In this legume-scarce ecosystem, P fertilization is unlikely to boost productivity and may pose an environmental risk. © 2024 Springer Nature
653 $a"Río de la Plata" grasslands
653 $aForage production
653 $aNitrogen
653 $aStoichiometric changes
700 1 $aAYALA, W.
700 1 $aLEZAMA, F.
700 1 $aREYNO, R.
700 1 $aCUADRO, R.
700 1 $aMICHELINI, D.
700 1 $aJAURENA, M.
700 1 $aLATTANZI, F.
773 $tPlant and Soil. 2024. https://doi.org/10.1007/s11104-024-06562-5
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