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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 : |
29/01/2024 |
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Actualizado : |
29/01/2024 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Autor : |
MARÍN, M.F.; NAYA, H.; ESPASANDIN, A.C.; NAVAJAS, E.; DEVINCENZI, T.; CARRIQUIRY, M. |
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Afiliación : |
MARIA F. MARÍN, Departamento de Producción Animal y Pasturas, Facultad de Agronomía, Universidad de la República, Montevideo, Montevideo, 12900, Uruguay; HUGO NAYA, Departamento de Producción Animal y Pasturas, Facultad de Agronomía, Universidad de la República, Montevideo, Montevideo, 12900, Uruguay; Unidad de Bioinformática, Institut Pasteur de Montevideo, Montevideo, Montevideo, 11400, Uruguay; ANA C. ESPASANDIN, Departamento de Producción Animal y Pasturas, Facultad de Agronomía, Universidad de la República, Montevideo, Montevideo, 12900, Uruguay; ELLY ANA NAVAJAS VALENTINI, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; THAIS DEVINCENZI, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; MARIANA CARRIQUIRY, Departamento de Producción Animal y Pasturas, Facultad de Agronomía, Universidad de la República, Montevideo, Montevideo, 12900, Uruguay. |
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Título : |
Energy efficiency, reproductive performance, and metabolic parameters of grazing Hereford heifers. |
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Fecha de publicación : |
2024 |
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Fuente / Imprenta : |
Livestock Science, 2024, Volume 279, e105389. https://doi.org/10.1016/j.livsci.2023.105389 |
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ISSN : |
1871-1413 |
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DOI : |
10.1016/j.livsci.2023.105389 |
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Idioma : |
Inglés |
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Notas : |
Article history: Received 21 September 2023; Received in revised form 9 November 2023; Accepted 1 December 2023; Available online 2 December 2023. -- Correspondence: Marín, M.F.; Departamento de Producción Animal y Pasturas, Facultad de Agronomía, Universidad de la República, Montevideo, Montevideo, Uruguay; email:mfedericamarin@gmail.com -- Funding: This research was partially funded by the Comisión Académica de Posgrados (Uruguay) through the graduate scholarship awarded to M.F. Marín, to the CSIC Reserch Program awarded to M.F. Marin and by the CSIC I + D Research Program (UdelaR) awarded to M. Carriquiry. -- |
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Contenido : |
ABSTRACT.- Feed and energy efficiency have been topics of extensive research in recent years, with residual feed intake (RFI) being the preferred index to determine feed efficiency in beef cattle. Nevertheless, the biggest downside of RFI is that its measurement requires accurately determining individual feed intake, which leads to the need to carry out RFI trials in confinement conditions. In this context, residual heat production (RHP), defined as the difference between observed and predicted heat production, presents an alternative to determine efficiency in grazing conditions as it is independent of feed intake. This work aimed to evaluate the repeatability of RHP and study its relationship with metabolic, endocrine, and reproductive variables. Seventy-four Hereford heifers were used, and at the beginning of the experimental period, heifers were 18 ± 0.7-month-old and weighed on average 278 ± 26 kg. Heat production (HP) was determined at the beginning (March to May; fall) and at the end (September to November; spring) of the experiment using the heart rate-O2 pulse technique to classify heifers according with the residual heat production (RHP). Efficient heifers showed lower HP (P < 0.01), ME (P < 0.01), and DM intake (P < 0.01) without differences in retained energy (RE; only in spring). During fall, average daily gain (ADG) was not included in the estimated HP model; therefore, although, as in RFI, RHP should be independent of BW and ADG, a trend for greater ADG and RE was found for efficient when compared with inefficient heifers. Decreased maintenance requirements (NEm and MEm) as well as higher partial efficiency of use of consumed ME (k) were estimated for more efficient heifers (low RHP; HH), while efficient heifers showed an earlier luteal phase and a shorter service-conception interval and calved earlier in the season, probably associated to an earlier development of fat tissue. Excluding glucose, no major differences were found in the plasma metabolites between groups. However, high-efficiency animals showed positive correlations with cholesterol and negative ones with NEFA plasma concentrations during fall. © 2023 MenosABSTRACT.- Feed and energy efficiency have been topics of extensive research in recent years, with residual feed intake (RFI) being the preferred index to determine feed efficiency in beef cattle. Nevertheless, the biggest downside of RFI is that its measurement requires accurately determining individual feed intake, which leads to the need to carry out RFI trials in confinement conditions. In this context, residual heat production (RHP), defined as the difference between observed and predicted heat production, presents an alternative to determine efficiency in grazing conditions as it is independent of feed intake. This work aimed to evaluate the repeatability of RHP and study its relationship with metabolic, endocrine, and reproductive variables. Seventy-four Hereford heifers were used, and at the beginning of the experimental period, heifers were 18 ± 0.7-month-old and weighed on average 278 ± 26 kg. Heat production (HP) was determined at the beginning (March to May; fall) and at the end (September to November; spring) of the experiment using the heart rate-O2 pulse technique to classify heifers according with the residual heat production (RHP). Efficient heifers showed lower HP (P < 0.01), ME (P < 0.01), and DM intake (P < 0.01) without differences in retained energy (RE; only in spring). During fall, average daily gain (ADG) was not included in the estimated HP model; therefore, although, as in RFI, RHP should be independent of BW and ADG, a trend for greater ADG and RE... Presentar Todo |
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Palabras claves : |
Beef cattle; Heat production; Reproduction; SISTEMA GANADERO EXTENSIVO - INIA. |
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Asunto categoría : |
L53 Fisiología Animal - Reproducción |
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Marc : |
LEADER 03594nam a2200253 a 4500
001 1064445
005 2024-01-29
008 2024 bl uuuu u00u1 u #d
022 $a1871-1413
024 7 $a10.1016/j.livsci.2023.105389$2DOI
100 1 $aMARÍN, M.F.
245 $aEnergy efficiency, reproductive performance, and metabolic parameters of grazing Hereford heifers.$h[electronic resource]
260 $aLivestock Science, 2024, Volume 279, e105389. https://doi.org/10.1016/j.livsci.2023.105389$c2023
500 $aArticle history: Received 21 September 2023; Received in revised form 9 November 2023; Accepted 1 December 2023; Available online 2 December 2023. -- Correspondence: Marín, M.F.; Departamento de Producción Animal y Pasturas, Facultad de Agronomía, Universidad de la República, Montevideo, Montevideo, Uruguay; email:mfedericamarin@gmail.com -- Funding: This research was partially funded by the Comisión Académica de Posgrados (Uruguay) through the graduate scholarship awarded to M.F. Marín, to the CSIC Reserch Program awarded to M.F. Marin and by the CSIC I + D Research Program (UdelaR) awarded to M. Carriquiry. --
520 $aABSTRACT.- Feed and energy efficiency have been topics of extensive research in recent years, with residual feed intake (RFI) being the preferred index to determine feed efficiency in beef cattle. Nevertheless, the biggest downside of RFI is that its measurement requires accurately determining individual feed intake, which leads to the need to carry out RFI trials in confinement conditions. In this context, residual heat production (RHP), defined as the difference between observed and predicted heat production, presents an alternative to determine efficiency in grazing conditions as it is independent of feed intake. This work aimed to evaluate the repeatability of RHP and study its relationship with metabolic, endocrine, and reproductive variables. Seventy-four Hereford heifers were used, and at the beginning of the experimental period, heifers were 18 ± 0.7-month-old and weighed on average 278 ± 26 kg. Heat production (HP) was determined at the beginning (March to May; fall) and at the end (September to November; spring) of the experiment using the heart rate-O2 pulse technique to classify heifers according with the residual heat production (RHP). Efficient heifers showed lower HP (P < 0.01), ME (P < 0.01), and DM intake (P < 0.01) without differences in retained energy (RE; only in spring). During fall, average daily gain (ADG) was not included in the estimated HP model; therefore, although, as in RFI, RHP should be independent of BW and ADG, a trend for greater ADG and RE was found for efficient when compared with inefficient heifers. Decreased maintenance requirements (NEm and MEm) as well as higher partial efficiency of use of consumed ME (k) were estimated for more efficient heifers (low RHP; HH), while efficient heifers showed an earlier luteal phase and a shorter service-conception interval and calved earlier in the season, probably associated to an earlier development of fat tissue. Excluding glucose, no major differences were found in the plasma metabolites between groups. However, high-efficiency animals showed positive correlations with cholesterol and negative ones with NEFA plasma concentrations during fall. © 2023
653 $aBeef cattle
653 $aHeat production
653 $aReproduction
653 $aSISTEMA GANADERO EXTENSIVO - INIA
700 1 $aNAYA, H.
700 1 $aESPASANDIN, A.C.
700 1 $aNAVAJAS, E.
700 1 $aDEVINCENZI, T.
700 1 $aCARRIQUIRY, M.
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INIA Las Brujas (LB) |
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Registro completo
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Biblioteca (s) : |
INIA Treinta y Tres. |
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Fecha actual : |
16/08/2021 |
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Actualizado : |
19/08/2021 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Circulación / Nivel : |
-- - -- |
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Autor : |
MACEDO, I.; PRAVIA, V.; CASTILLO, J.; TERRA, J.A. |
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Afiliación : |
IGNACIO MACEDO YAPOR, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; MARIA VIRGINIA PRAVIA NIN, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; EMILSE JESUS CASTILLO VELAZQUEZ, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; JOSÉ ALFREDO TERRA FERNÁNDEZ, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
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Título : |
Soil organic matter in physical fractions after intensification of irrigated rice-pasture rotation systems. |
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Fecha de publicación : |
2021 |
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Fuente / Imprenta : |
Soil and Tillage Research, September 2021, Volume 213, Article number 105160, Pages 1-10. Doi: https://doi.org/10.1016/j.still.2021.105160 |
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DOI : |
10.1016/j.still.2021.105160 |
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Idioma : |
Inglés |
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Notas : |
Article history: Received 3 March 2021, Revised 26 July 2021, Accepted 30 July 2021, Available online 12 August 2021.
E-mail address: macedoyapor@gmail.com (I. Macedo). |
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Contenido : |
Crop-pasture systems improve soil quality, but their intensification through the increase of the frequency of annual crops may reduce it. We evaluated the impacts of six no-till rice rotations systems on soil quality after five years in a field scale long term experiment established on a site with a 30 years old stabilized rice-pasture rotation. Rotations included: continuous rice (ContRc); rice-soybean (Rc-Sy); rice-soybean-rice-sorghum (Rc-Sy-Sg); rice-soybean-pasture (Rc-Sy-Past); and rice-pasture, with short (Rc-SPast) and long-term pastures (Rc-LPast). Cover crops were included in winter between cash crops. All rotation phases coexisted and were replicated three times in space. Soil quality indicators included: soil organic carbon and total nitrogen contents in bulk soil (TSOC and TN, respectively) and in particulate (>53 μm, POM-C and POM-N) and mineral associated soil organic matter fractions (<53 μm, MAOM-C and MAOM-N). Soil cores were collected at 0−5 cm and 5−15 cm soils depths (results presented at 0−5 and 0−15 cm depths). Additionally, soil samples were taken up to 60 cm soil depth every 15 cm for TSOC and TN. After five years, no differences were observed in TSOC (29.3 Mg C ha−1) or TN (3.16 Mg N ha−1) between rotations in the first 0−15 cm as well as for each layer and in the aggregated 0−60 cm of soil. Neither POM-C nor POM-N contents were different between treatments that had perennial pastures in the rotation. However, Rc-LPast had 18 and 19 % greater POM-C and POM-N respectively than the average of Rc-Sy and Rc-Sy-Sg, (6.06 Mg C ha−1 and 0.48 Mg N ha−1, 0−15 cm depth). Meanwhile, the POM-C represented 23.6 % of TSOC in Rc-LPast, but in rotations that replaced pastures (Rc-Sy and Rc-Sy-Sg) represented only 20 %. For soils in temperate zones, under a stable rice-pasture rotation, there are intensification alternatives which preserved TSOC in the midterm. However, the reduction in the particulate fractions observed in the rice rotations that substituted perennial pastures with other crops, suggests that TSOC may be more vulnerable to losses in the long term. MenosCrop-pasture systems improve soil quality, but their intensification through the increase of the frequency of annual crops may reduce it. We evaluated the impacts of six no-till rice rotations systems on soil quality after five years in a field scale long term experiment established on a site with a 30 years old stabilized rice-pasture rotation. Rotations included: continuous rice (ContRc); rice-soybean (Rc-Sy); rice-soybean-rice-sorghum (Rc-Sy-Sg); rice-soybean-pasture (Rc-Sy-Past); and rice-pasture, with short (Rc-SPast) and long-term pastures (Rc-LPast). Cover crops were included in winter between cash crops. All rotation phases coexisted and were replicated three times in space. Soil quality indicators included: soil organic carbon and total nitrogen contents in bulk soil (TSOC and TN, respectively) and in particulate (>53 μm, POM-C and POM-N) and mineral associated soil organic matter fractions (<53 μm, MAOM-C and MAOM-N). Soil cores were collected at 0−5 cm and 5−15 cm soils depths (results presented at 0−5 and 0−15 cm depths). Additionally, soil samples were taken up to 60 cm soil depth every 15 cm for TSOC and TN. After five years, no differences were observed in TSOC (29.3 Mg C ha−1) or TN (3.16 Mg N ha−1) between rotations in the first 0−15 cm as well as for each layer and in the aggregated 0−60 cm of soil. Neither POM-C nor POM-N contents were different between treatments that had perennial pastures in the ... Presentar Todo |
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Palabras claves : |
ARROZ; FLOODED SOILS; RICE; ROTACIONES; ROTACIONES ARROZ-PASTURAS; SOIL CARBON SEQUESTRATION; SOIL HEALTH; SUSTAINABLE INTENSIFICATION; URUGUAY. |
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Asunto categoría : |
P30 Ciencia del suelo y manejo del suelo |
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Marc : |
LEADER 03272naa a2200289 a 4500
001 1062350
005 2021-08-19
008 2021 bl uuuu u00u1 u #d
024 7 $a10.1016/j.still.2021.105160$2DOI
100 1 $aMACEDO, I.
245 $aSoil organic matter in physical fractions after intensification of irrigated rice-pasture rotation systems.$h[electronic resource]
260 $c2021
500 $aArticle history: Received 3 March 2021, Revised 26 July 2021, Accepted 30 July 2021, Available online 12 August 2021. E-mail address: macedoyapor@gmail.com (I. Macedo).
520 $aCrop-pasture systems improve soil quality, but their intensification through the increase of the frequency of annual crops may reduce it. We evaluated the impacts of six no-till rice rotations systems on soil quality after five years in a field scale long term experiment established on a site with a 30 years old stabilized rice-pasture rotation. Rotations included: continuous rice (ContRc); rice-soybean (Rc-Sy); rice-soybean-rice-sorghum (Rc-Sy-Sg); rice-soybean-pasture (Rc-Sy-Past); and rice-pasture, with short (Rc-SPast) and long-term pastures (Rc-LPast). Cover crops were included in winter between cash crops. All rotation phases coexisted and were replicated three times in space. Soil quality indicators included: soil organic carbon and total nitrogen contents in bulk soil (TSOC and TN, respectively) and in particulate (>53 μm, POM-C and POM-N) and mineral associated soil organic matter fractions (<53 μm, MAOM-C and MAOM-N). Soil cores were collected at 0−5 cm and 5−15 cm soils depths (results presented at 0−5 and 0−15 cm depths). Additionally, soil samples were taken up to 60 cm soil depth every 15 cm for TSOC and TN. After five years, no differences were observed in TSOC (29.3 Mg C ha−1) or TN (3.16 Mg N ha−1) between rotations in the first 0−15 cm as well as for each layer and in the aggregated 0−60 cm of soil. Neither POM-C nor POM-N contents were different between treatments that had perennial pastures in the rotation. However, Rc-LPast had 18 and 19 % greater POM-C and POM-N respectively than the average of Rc-Sy and Rc-Sy-Sg, (6.06 Mg C ha−1 and 0.48 Mg N ha−1, 0−15 cm depth). Meanwhile, the POM-C represented 23.6 % of TSOC in Rc-LPast, but in rotations that replaced pastures (Rc-Sy and Rc-Sy-Sg) represented only 20 %. For soils in temperate zones, under a stable rice-pasture rotation, there are intensification alternatives which preserved TSOC in the midterm. However, the reduction in the particulate fractions observed in the rice rotations that substituted perennial pastures with other crops, suggests that TSOC may be more vulnerable to losses in the long term.
653 $aARROZ
653 $aFLOODED SOILS
653 $aRICE
653 $aROTACIONES
653 $aROTACIONES ARROZ-PASTURAS
653 $aSOIL CARBON SEQUESTRATION
653 $aSOIL HEALTH
653 $aSUSTAINABLE INTENSIFICATION
653 $aURUGUAY
700 1 $aPRAVIA, V.
700 1 $aCASTILLO, J.
700 1 $aTERRA, J.A.
773 $tSoil and Tillage Research, September 2021, Volume 213, Article number 105160, Pages 1-10. Doi: https://doi.org/10.1016/j.still.2021.105160
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