| |
|
|
 | Acceso al texto completo restringido a Biblioteca INIA La Estanzuela. Por información adicional contacte bib_le@inia.org.uy. |
|
Registro completo
|
|
Biblioteca (s) : |
INIA La Estanzuela. |
|
Fecha : |
05/04/2022 |
|
Actualizado : |
12/04/2022 |
|
Tipo de producción científica : |
Tesis |
|
Autor : |
TALMÓN, D. |
|
Afiliación : |
DANIEL ENRIQUE TALMÓN TRAVERS, Departamento de Producción Animal y Pasturas, Facultad de Agronomía, Universidad de la República, Montevideo, 12900, Uruguay. |
|
Título : |
Eficiencia y partición energética de dos líneas genéticas Holando bajo pastoreo: tesis MSc. |
|
Fecha de publicación : |
2020 |
|
Fuente / Imprenta : |
Montevideo (Uruguay): UdelaR, FAGRO, Unidad de Posgrados y Educación Permanente, 2020. Tesis Magíster en Ciencias Agrarias opción Ciencias Animales. |
|
Páginas : |
65 p. |
|
Idioma : |
Español |
|
Notas : |
Tesis aprobada por el tribunal integrado por el Ing. Agr. (PhD) Pablo Chilibroste, el DMTV (PhD) Martín Aguerre y el Prof. (PhD) Nicolas Lopez-Villalobos el 26 de noviembre de 2020. Autor: Ing. Agr. Daniel Talmón. Director: Ing. Agr. (PhD) Diego Mattiauda, Co-directores: Ing. Agr. (PhD) Mariana Carriquiry y Ing. Agr. (PhD) Alejandro Mendoza. |
|
Contenido : |
RESUMEN:
El objetivo del trabajo fue evaluar el efecto de dos líneas genéticas Holando (Holando neozelandés vs. Holando norteamericano; HNZ vs. HNA) sobre la partición de la energía metabolizable consumida (CEM) entre la producción de calor (PC) y la energía retenida (ER) de vacas lecheras en pastoreo. Se realizaron dos experimentos; en el experimento 1, las vacas fueron alimentadas mediante pastoreo y suplementadas con 1/3 de la dieta con concentrado mientras que en el experimento 2 las vacas se alimentaron exclusivamente con pastura mediante pastoreo. La PC se midió utilizando la técnica del pulso de O2 y la ER en leche se calculó en base a la producción de leche y su composición mientras que la ER en tejido se estimó a través de los cambios en peso vivo (PV) y condición corporal. En el experimento 1, las vacas HNA presentaron mayor PC y PC residual que se asoció con mayores requerimientos de energía
metabolizable de mantenimiento (EMm) que las vacas HNZ. Sin embargo, a pesar de las diferencias en PC, la retención de la energía metabolizable consumida (ER/CEM) no fue afectada por la línea genética Holando. Por otro lado, en el experimento 2, las
vacas HNZ presentaron un mayor consumo de pastura en relación a su PV que determinó un mayor CEM (kJ/kgPV0,75/d) que en las vacas HNA. El mayor CEM permitió una mayor dilución de los requerimientos de mantenimiento en las vacas HNZ resultando una mayor eficiencia alimenticia y ER/CEM. Los resultados de estosexperimentosindicarían que la EMm (kJ/kgPV0,75/d) fue 10% mayor en las vacas HNA que HNZ, lo que probablemente pueda asociarse a un mayor tamaño relativo de órganos internos y/o una mayor proporción de proteína en su composición corporal como consecuencia de su selección genética. Se puede concluir que las vacas HNZ
tendrían una mayor partición energética hacia la producción de leche que las vacas HNA cuando son alimentadas exclusivamente bajo pastoreo sin suplementación, mientras que estas diferencias no se expresarían bajo un sistema pastoril con alta
suplementación con concentrado que permita levantar, al menos parcialmente, las restricciones en el CEM que impone el pastoreo en las vacas de alta producción (HNA).
SUMMARY:
The aim of this work was to evaluate the effect of two Holstein strains (New Zealand Holstein vs. North American Holstein; NZH vs. NAH) on the partitioning of the metabolizable energy intake (MEI) between heat production (HP) and retained energy (RE) in grazing dairy cows. Two experiments were carried out; in experiment 1, dairy cows grazed pasture and were supplemented with 1/3 of the diet as concentrate while in experiment 2, dairy cows only grazed pasture without supplementation. The HP was measured using the O2 pulse technique and RE in milk was calculated based on milk production and its composition while RE in tissue was estimated through
changes in body weight (BW) and body condition score. In experiment 1, NAH cows had greater HP and residual HP, which were associated with a greater metabolizable energy requirements for maintenance (MEm), than NZH cows. However, despite the
differences in HP, the energy partitioning of the MEI towards milk production and tissue (RE/MEI) did not differ between Holstein strains. On the other hand, in experiment 2, NZH cows had a greater pasture intake related to their BW and therefore,a greater MEI (kJ/kgBW0.75/d) than NAH cows. The greater MEI led to a greater dilution of the maintenance energy requirements for NZH than NAH cows which increased feed efficiency and RE/MEI in the former ones. The results of these experiments would indicate that MEm (kJ/kgBW0.75/d) was 10% greater for NAH than NZH cows which could probably be associated with a greater relative size of the
internal organs and a greater proportion of body protein as consequence of the genetic selection. Moreover, we concluded that NZH cows could have a greater energy partitioning towards milk production than NAH cows when they are managed under a
grazing system without supplementation. However, these differences are not expected when they are managed under a grazing system with supplementation of concentrate which allows to partially reduce MEI restrictions imposed by grazing conditions
especially challenging for high-producing dairy cows (NAH). MenosRESUMEN:
El objetivo del trabajo fue evaluar el efecto de dos líneas genéticas Holando (Holando neozelandés vs. Holando norteamericano; HNZ vs. HNA) sobre la partición de la energía metabolizable consumida (CEM) entre la producción de calor (PC) y la energía retenida (ER) de vacas lecheras en pastoreo. Se realizaron dos experimentos; en el experimento 1, las vacas fueron alimentadas mediante pastoreo y suplementadas con 1/3 de la dieta con concentrado mientras que en el experimento 2 las vacas se alimentaron exclusivamente con pastura mediante pastoreo. La PC se midió utilizando la técnica del pulso de O2 y la ER en leche se calculó en base a la producción de leche y su composición mientras que la ER en tejido se estimó a través de los cambios en peso vivo (PV) y condición corporal. En el experimento 1, las vacas HNA presentaron mayor PC y PC residual que se asoció con mayores requerimientos de energía
metabolizable de mantenimiento (EMm) que las vacas HNZ. Sin embargo, a pesar de las diferencias en PC, la retención de la energía metabolizable consumida (ER/CEM) no fue afectada por la línea genética Holando. Por otro lado, en el experimento 2, las
vacas HNZ presentaron un mayor consumo de pastura en relación a su PV que determinó un mayor CEM (kJ/kgPV0,75/d) que en las vacas HNA. El mayor CEM permitió una mayor dilución de los requerimientos de mantenimiento en las vacas HNZ resultando una mayor eficiencia alimenticia y ER/CEM. Los resultados de estosexperimentosindicaría... Presentar Todo |
|
Palabras claves : |
CALORIMETRÍA INDIRECTA; DAIRY CATTLE; Energy expenditure; Gasto energético; INDIRECT CALORIMETRY. |
|
Thesagro : |
GANADO LECHERO. |
|
Asunto categoría : |
L01 Ganadería |
|
Marc : |
LEADER 05488nam a2200205 a 4500
001 1062962
005 2022-04-12
008 2020 bl uuuu m 00u1 u #d
100 1 $aTALMÓN, D.
245 $aEficiencia y partición energética de dos líneas genéticas Holando bajo pastoreo$btesis MSc.$h[electronic resource]
260 $aMontevideo (Uruguay): UdelaR, FAGRO, Unidad de Posgrados y Educación Permanente, 2020. Tesis Magíster en Ciencias Agrarias opción Ciencias Animales.$c2020
300 $a65 p.
500 $aTesis aprobada por el tribunal integrado por el Ing. Agr. (PhD) Pablo Chilibroste, el DMTV (PhD) Martín Aguerre y el Prof. (PhD) Nicolas Lopez-Villalobos el 26 de noviembre de 2020. Autor: Ing. Agr. Daniel Talmón. Director: Ing. Agr. (PhD) Diego Mattiauda, Co-directores: Ing. Agr. (PhD) Mariana Carriquiry y Ing. Agr. (PhD) Alejandro Mendoza.
520 $aRESUMEN: El objetivo del trabajo fue evaluar el efecto de dos líneas genéticas Holando (Holando neozelandés vs. Holando norteamericano; HNZ vs. HNA) sobre la partición de la energía metabolizable consumida (CEM) entre la producción de calor (PC) y la energía retenida (ER) de vacas lecheras en pastoreo. Se realizaron dos experimentos; en el experimento 1, las vacas fueron alimentadas mediante pastoreo y suplementadas con 1/3 de la dieta con concentrado mientras que en el experimento 2 las vacas se alimentaron exclusivamente con pastura mediante pastoreo. La PC se midió utilizando la técnica del pulso de O2 y la ER en leche se calculó en base a la producción de leche y su composición mientras que la ER en tejido se estimó a través de los cambios en peso vivo (PV) y condición corporal. En el experimento 1, las vacas HNA presentaron mayor PC y PC residual que se asoció con mayores requerimientos de energía metabolizable de mantenimiento (EMm) que las vacas HNZ. Sin embargo, a pesar de las diferencias en PC, la retención de la energía metabolizable consumida (ER/CEM) no fue afectada por la línea genética Holando. Por otro lado, en el experimento 2, las vacas HNZ presentaron un mayor consumo de pastura en relación a su PV que determinó un mayor CEM (kJ/kgPV0,75/d) que en las vacas HNA. El mayor CEM permitió una mayor dilución de los requerimientos de mantenimiento en las vacas HNZ resultando una mayor eficiencia alimenticia y ER/CEM. Los resultados de estosexperimentosindicarían que la EMm (kJ/kgPV0,75/d) fue 10% mayor en las vacas HNA que HNZ, lo que probablemente pueda asociarse a un mayor tamaño relativo de órganos internos y/o una mayor proporción de proteína en su composición corporal como consecuencia de su selección genética. Se puede concluir que las vacas HNZ tendrían una mayor partición energética hacia la producción de leche que las vacas HNA cuando son alimentadas exclusivamente bajo pastoreo sin suplementación, mientras que estas diferencias no se expresarían bajo un sistema pastoril con alta suplementación con concentrado que permita levantar, al menos parcialmente, las restricciones en el CEM que impone el pastoreo en las vacas de alta producción (HNA). SUMMARY: The aim of this work was to evaluate the effect of two Holstein strains (New Zealand Holstein vs. North American Holstein; NZH vs. NAH) on the partitioning of the metabolizable energy intake (MEI) between heat production (HP) and retained energy (RE) in grazing dairy cows. Two experiments were carried out; in experiment 1, dairy cows grazed pasture and were supplemented with 1/3 of the diet as concentrate while in experiment 2, dairy cows only grazed pasture without supplementation. The HP was measured using the O2 pulse technique and RE in milk was calculated based on milk production and its composition while RE in tissue was estimated through changes in body weight (BW) and body condition score. In experiment 1, NAH cows had greater HP and residual HP, which were associated with a greater metabolizable energy requirements for maintenance (MEm), than NZH cows. However, despite the differences in HP, the energy partitioning of the MEI towards milk production and tissue (RE/MEI) did not differ between Holstein strains. On the other hand, in experiment 2, NZH cows had a greater pasture intake related to their BW and therefore,a greater MEI (kJ/kgBW0.75/d) than NAH cows. The greater MEI led to a greater dilution of the maintenance energy requirements for NZH than NAH cows which increased feed efficiency and RE/MEI in the former ones. The results of these experiments would indicate that MEm (kJ/kgBW0.75/d) was 10% greater for NAH than NZH cows which could probably be associated with a greater relative size of the internal organs and a greater proportion of body protein as consequence of the genetic selection. Moreover, we concluded that NZH cows could have a greater energy partitioning towards milk production than NAH cows when they are managed under a grazing system without supplementation. However, these differences are not expected when they are managed under a grazing system with supplementation of concentrate which allows to partially reduce MEI restrictions imposed by grazing conditions especially challenging for high-producing dairy cows (NAH).
650 $aGANADO LECHERO
653 $aCALORIMETRÍA INDIRECTA
653 $aDAIRY CATTLE
653 $aEnergy expenditure
653 $aGasto energético
653 $aINDIRECT CALORIMETRY
Descargar
Esconder MarcPresentar Marc Completo |
|
Registro original : |
INIA La Estanzuela (LE) |
|
|
Biblioteca
|
Identificación
|
Origen
|
Tipo / Formato
|
Clasificación
|
Cutter
|
Registro
|
Volumen
|
Estado
|
Volver
|
|
|
| Acceso al texto completo restringido a Biblioteca INIA Treinta y Tres. Por información adicional contacte bibliott@inia.org.uy. |
|
Registro completo
|
|
Biblioteca (s) : |
INIA Treinta y Tres. |
|
Fecha actual : |
08/09/2020 |
|
Actualizado : |
17/09/2020 |
|
Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
|
Circulación / Nivel : |
Internacional - -- |
|
Autor : |
SAVIAN, J.V.; TRES SCHONS, R. M.; SOUZA FILHO, W. DE; SÁNCHEZ ZUBIETA, A.; KINDLEIN, L.; BINDELLE, J.; BAYER, C.; BREMM, C.; CARVALHO, P. C. DE F. |
|
Afiliación : |
JEAN VICTOR SAVIAN, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. Grazing Ecology Research Group, Federal University of Rio Grande do Sul, Porto Alegre, Brazil.; RADAEL MARINHO TRES SCHONS, Grazing Ecology Research Group, Federal University of Río Grande do Sul, Porto Alegre, Brazil.; WILLIAM DE SOUZA FILHO, Grazing Ecology Research Group, Federal University of Río Grande do Sul, Porto Alegre, Brazil.; ANGEL SÁNCHEZ ZUBIETA, Grazing Ecology Research Group, Federal University of Río Grande do Sul, Porto Alegre, Brazil.; LIRIS KINDLEIN, Department of Preventive Veterinary Medicine, Federal University of Rio Grande do Sul, Porto Alegre, Brazil.; JEROME BINDELLE, Precision Livestock and Nutrition Unit, Gembloux Agro-Bio Tech, TERRA, Teaching and Research Centre, University of Liege, Glembloux, Belgium; CIMÉLIO BAYER, Department of Soil Science, Federal University of Rio Grande do Sul, Porto Alegre, Brazil.; CAROLINA BREMM, Grazing Ecology Research Group, Federal University of Rio Grande do Sul, Porto Alegre, Brazil.; PAULO CÉSAR DE FACCIO CARVALHO, Grazing Ecology Research Group, Federal University of Rio Grande do Sul, Porto Alegre, Brazil. |
|
Título : |
"Rotatinuous" stocking as a climate-smart grazing management strategy for sheep production. |
|
Fecha de publicación : |
2020 |
|
Fuente / Imprenta : |
Science of the Total Environment 2020, v. 753, 141790. https://doi.org/10.1016/j.scitotenv.2020.141790 |
|
DOI : |
10.1016/j.scitotenv.2020.141790 |
|
Idioma : |
Inglés |
|
Notas : |
Article history: Received 15 June 2020. Received in revised form 8 August 2020. Accepted 17 August 2020. Available online 22 August 2020. |
|
Contenido : |
We aimed to evaluate the effect of different grazing management strategies on carcass characteristics traits, meat quality and CH4 intensity and yield of lambs grazing Italian ryegrass pastures in Southern Brazil. A grazing trial was performed (2014 and 2015) in a randomized complete block design with two grazing management targets and four replicates. Treatments were traditional rotational stocking (RT), with pre- and post-grazing sward heights of 25 and 5 cm, respectively, and "Rotatinuous" stocking (RN), with pre- and post-grazing sward heights of 18 and 11 cm, respectively. Castrated crossbred Texel and Polwarth lambs were used. Results indicated that diet cost per kg of dry matter (p = 0.001) and per hectare (p < 0.001) were lower for RN than for RT treatment. Final live weight (p = 0.022) and hot and cold carcass weight (p = 0.006) were greater for the RN treatment. All commercial cuts were greater for RN than for RT treatment. The RN treatment presented greater (p < 0.001) production of carcass, edible food and crude protein. Feed efficiency and feed cost conversion were better for RN than for RT treatment.
CH4 intensity per kg of carcass, edible food and crude protein gain were 2.6, 2.7 and 2.1 times lower (p < 0.001) for RN. Moreover, CH4 yield was lower (p = 0.014) for RN than for RT treatment, with an average of 7.6 and 8.3% of the gross energy intake, respectively. We conclude that the "Rotatinuous" stocking results in a greater carcass production, carcass quality and lower diet cost, and CH4 intensity and yield of grazing lambs. Adopting this grazing management strategy could enhance both lamb production and mitigation of CH4 intensity and yield in grazing ecosystems, which could be considered a good example of climate-smart livestock production. MenosWe aimed to evaluate the effect of different grazing management strategies on carcass characteristics traits, meat quality and CH4 intensity and yield of lambs grazing Italian ryegrass pastures in Southern Brazil. A grazing trial was performed (2014 and 2015) in a randomized complete block design with two grazing management targets and four replicates. Treatments were traditional rotational stocking (RT), with pre- and post-grazing sward heights of 25 and 5 cm, respectively, and "Rotatinuous" stocking (RN), with pre- and post-grazing sward heights of 18 and 11 cm, respectively. Castrated crossbred Texel and Polwarth lambs were used. Results indicated that diet cost per kg of dry matter (p = 0.001) and per hectare (p < 0.001) were lower for RN than for RT treatment. Final live weight (p = 0.022) and hot and cold carcass weight (p = 0.006) were greater for the RN treatment. All commercial cuts were greater for RN than for RT treatment. The RN treatment presented greater (p < 0.001) production of carcass, edible food and crude protein. Feed efficiency and feed cost conversion were better for RN than for RT treatment.
CH4 intensity per kg of carcass, edible food and crude protein gain were 2.6, 2.7 and 2.1 times lower (p < 0.001) for RN. Moreover, CH4 yield was lower (p = 0.014) for RN than for RT treatment, with an average of 7.6 and 8.3% of the gross energy intake, respectively. We conclude that the "Rotatinuous" stocking results in a greater carcass production, carcass qualit... Presentar Todo |
|
Palabras claves : |
FOOD PRODUCTION; GREENHOUSE GASES; LAMB CARCASS; METHANE INTENSITY; ROTATIONAL STOCKING; SWARD MANAGEMENT. |
|
Asunto categoría : |
P01 Conservación de la naturaleza y recursos de La tierra |
|
Marc : |
LEADER 02887naa a2200313 a 4500
001 1061300
005 2020-09-17
008 2020 bl uuuu u00u1 u #d
024 7 $a10.1016/j.scitotenv.2020.141790$2DOI
100 1 $aSAVIAN, J.V.
245 $a"Rotatinuous" stocking as a climate-smart grazing management strategy for sheep production.$h[electronic resource]
260 $c2020
500 $aArticle history: Received 15 June 2020. Received in revised form 8 August 2020. Accepted 17 August 2020. Available online 22 August 2020.
520 $aWe aimed to evaluate the effect of different grazing management strategies on carcass characteristics traits, meat quality and CH4 intensity and yield of lambs grazing Italian ryegrass pastures in Southern Brazil. A grazing trial was performed (2014 and 2015) in a randomized complete block design with two grazing management targets and four replicates. Treatments were traditional rotational stocking (RT), with pre- and post-grazing sward heights of 25 and 5 cm, respectively, and "Rotatinuous" stocking (RN), with pre- and post-grazing sward heights of 18 and 11 cm, respectively. Castrated crossbred Texel and Polwarth lambs were used. Results indicated that diet cost per kg of dry matter (p = 0.001) and per hectare (p < 0.001) were lower for RN than for RT treatment. Final live weight (p = 0.022) and hot and cold carcass weight (p = 0.006) were greater for the RN treatment. All commercial cuts were greater for RN than for RT treatment. The RN treatment presented greater (p < 0.001) production of carcass, edible food and crude protein. Feed efficiency and feed cost conversion were better for RN than for RT treatment. CH4 intensity per kg of carcass, edible food and crude protein gain were 2.6, 2.7 and 2.1 times lower (p < 0.001) for RN. Moreover, CH4 yield was lower (p = 0.014) for RN than for RT treatment, with an average of 7.6 and 8.3% of the gross energy intake, respectively. We conclude that the "Rotatinuous" stocking results in a greater carcass production, carcass quality and lower diet cost, and CH4 intensity and yield of grazing lambs. Adopting this grazing management strategy could enhance both lamb production and mitigation of CH4 intensity and yield in grazing ecosystems, which could be considered a good example of climate-smart livestock production.
653 $aFOOD PRODUCTION
653 $aGREENHOUSE GASES
653 $aLAMB CARCASS
653 $aMETHANE INTENSITY
653 $aROTATIONAL STOCKING
653 $aSWARD MANAGEMENT
700 1 $aTRES SCHONS, R. M.
700 1 $aSOUZA FILHO, W. DE
700 1 $aSÁNCHEZ ZUBIETA, A.
700 1 $aKINDLEIN, L.
700 1 $aBINDELLE, J.
700 1 $aBAYER, C.
700 1 $aBREMM, C.
700 1 $aCARVALHO, P. C. DE F.
773 $tScience of the Total Environment 2020$gv. 753, 141790. https://doi.org/10.1016/j.scitotenv.2020.141790
Descargar
Esconder MarcPresentar Marc Completo |
|
Registro original : |
INIA Treinta y Tres (TT) |
|
|
Biblioteca
|
Identificación
|
Origen
|
Tipo / Formato
|
Clasificación
|
Cutter
|
Registro
|
Volumen
|
Estado
|
Volver
|
| Expresión de búsqueda válido. Check! |
|
|
