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| Acceso al texto completo restringido a Biblioteca INIA La Estanzuela. Por información adicional contacte bib_le@inia.org.uy. |
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Biblioteca (s) : |
INIA La Estanzuela; INIA Treinta y Tres. |
Fecha : |
12/09/2014 |
Actualizado : |
11/08/2020 |
Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
Autor : |
QUINTANS, G.; VELAZCO, J.I.; SCARSI, A.; LÓPEZ-MAZZ, C.; BANCHERO, G. |
Afiliación : |
GRACIELA QUINTANS ILARIA, Instituto Nacional de Investigación Agropecuaria (INIA), Uruguay; JOSE IGNACIO VELAZCO DE LOS REYES, Instituto Nacional de Investigación Agropecuaria (INIA), Uruguay; MARIA ANTONIA SCARSI PERALTA, Instituto Nacional de Investigación Agropecuaria (INIA), Uruguay; GEORGGET ELIZABETH BANCHERO HUNZIKER, Instituto Nacional de Investigación Agropecuaria (INIA), Uruguay. |
Título : |
Effect of nutritional management during the postpartum period of primiparous autumn-calving cows on dam and calf performance under range conditions. |
Fecha de publicación : |
2012 |
Fuente / Imprenta : |
Livestock Science, 2012, v. 144, no. 1, p. 103-109 |
DOI : |
10.1016/j.livsci.2011.11.003 |
Idioma : |
Inglés |
Notas : |
Article history: received 2 March 2011; received in revised form 31 October 2011; accepted 3 November 2011. Published 2012. |
Contenido : |
Abstract:
The aim of this study was to evaluate the effects of different winter nutritional management regimens in primiparous, autumn-calving heifers on dam and calf performance. In experiment 1, 41 Aberdeen Angus ×Hereford fall-calving beef heifers grazed native pastures (NP) for 78 days postpartum (pp) when they were assigned to one of two treatments during 94 days of winter: (i) grazing NP (NP; n= 21); (ii) grazing improved pastures with Lotus subbiflorus (IP, n= 20). Calves were weaned when dams reached 203 days pp and cows were artificially inseminated (AI) at 237 days pp. In experiment 2, 41 Aberdeen Angus ×Hereford fall-calving beef heifers grazed NP for 87 days pp, when they were assigned to one of three treatments during 90 days of winter: (i) grazing NP (NP, n= 14); (ii) grazing improved pastures with L. subbiflorus (IP; n= 13); (iii) grazing native pastures supplemented with a concentrate (S, n= 14). Supplemented cows were offered a concentrate (16% CP) daily at 1% of BW. On day 210 pp, calves were weaned and AI in cows was conducted on day 270 pp. Body weight (BW), body condition score (BCS), milk production (MP), presence of corpus luteum (CL) and pregnancy rate (PR) were measured during the experiment. In Experiment 1, at the end of winter, cows in the IP group weighed more (Pb0.05) and had greater (Pb0.05) BCS than cows in NP; these differences were maintained until day 270 pp. When AI commenced there were no difference in the incidence of CL presence and final PR was similar for cows in both treatments. MP was greater (Pb0.05) in IP than in NP cows (average: 3.8 vs. 2.4 kg/day). At weaning calves in IP were heavier than calves in NP group (182.6 vs. 117.3 kg). In Experiment 2 from the end of winter until AI, cows in the S group weighed more (Pb0.05) and had greater (Pb0.05) BCS than cows in NP and IP. At the beginning of AI there was a tendency (P= 0.08) for a higher percentage of cows in NP with CL compared to IP (86 vs. 54%), and there was no difference compared to S cows (71%). Final PR was similar for cows in all treatments (93, 92 and 100% for NP, IP and S, respectively). Milk production was greater (Pb0.001) in S than in NP cows (average: 3.8 vs. 2.8 kg/day), and no differences were found with respect to IP cows (3.3 kg/day). At weaning, calves from S were heavier than calves from IP. Both these groups of calves were heavier than NP calves (141.5, 134.1 vs. 122.4 kg; Pb0.05). Reproductive performance in autumn-calving cows managed during winter on native pastures was not affected during the following spring, but calves were lighter at weaning than those kept in better winter nutritional condition. MenosAbstract:
The aim of this study was to evaluate the effects of different winter nutritional management regimens in primiparous, autumn-calving heifers on dam and calf performance. In experiment 1, 41 Aberdeen Angus ×Hereford fall-calving beef heifers grazed native pastures (NP) for 78 days postpartum (pp) when they were assigned to one of two treatments during 94 days of winter: (i) grazing NP (NP; n= 21); (ii) grazing improved pastures with Lotus subbiflorus (IP, n= 20). Calves were weaned when dams reached 203 days pp and cows were artificially inseminated (AI) at 237 days pp. In experiment 2, 41 Aberdeen Angus ×Hereford fall-calving beef heifers grazed NP for 87 days pp, when they were assigned to one of three treatments during 90 days of winter: (i) grazing NP (NP, n= 14); (ii) grazing improved pastures with L. subbiflorus (IP; n= 13); (iii) grazing native pastures supplemented with a concentrate (S, n= 14). Supplemented cows were offered a concentrate (16% CP) daily at 1% of BW. On day 210 pp, calves were weaned and AI in cows was conducted on day 270 pp. Body weight (BW), body condition score (BCS), milk production (MP), presence of corpus luteum (CL) and pregnancy rate (PR) were measured during the experiment. In Experiment 1, at the end of winter, cows in the IP group weighed more (Pb0.05) and had greater (Pb0.05) BCS than cows in NP; these differences were maintained until day 270 pp. When AI commenced there were no difference in the incidence of CL presence and fin... Presentar Todo |
Palabras claves : |
AUTUMN CALVING; HEIFERS; MILK; POSPARTUM; POSTPARTO; WINTER. |
Thesagro : |
GANADO BOVINO; NUTRICION; PERIODO PERINATAL; VAQUILLONAS. |
Asunto categoría : |
-- L01 Ganadería |
Marc : |
LEADER 03668naa a2200313 a 4500 001 1050183 005 2020-08-11 008 2012 bl uuuu u00u1 u #d 024 7 $a10.1016/j.livsci.2011.11.003$2DOI 100 1 $aQUINTANS, G. 245 $aEffect of nutritional management during the postpartum period of primiparous autumn-calving cows on dam and calf performance under range conditions. 260 $c2012 500 $aArticle history: received 2 March 2011; received in revised form 31 October 2011; accepted 3 November 2011. Published 2012. 520 $aAbstract: The aim of this study was to evaluate the effects of different winter nutritional management regimens in primiparous, autumn-calving heifers on dam and calf performance. In experiment 1, 41 Aberdeen Angus ×Hereford fall-calving beef heifers grazed native pastures (NP) for 78 days postpartum (pp) when they were assigned to one of two treatments during 94 days of winter: (i) grazing NP (NP; n= 21); (ii) grazing improved pastures with Lotus subbiflorus (IP, n= 20). Calves were weaned when dams reached 203 days pp and cows were artificially inseminated (AI) at 237 days pp. In experiment 2, 41 Aberdeen Angus ×Hereford fall-calving beef heifers grazed NP for 87 days pp, when they were assigned to one of three treatments during 90 days of winter: (i) grazing NP (NP, n= 14); (ii) grazing improved pastures with L. subbiflorus (IP; n= 13); (iii) grazing native pastures supplemented with a concentrate (S, n= 14). Supplemented cows were offered a concentrate (16% CP) daily at 1% of BW. On day 210 pp, calves were weaned and AI in cows was conducted on day 270 pp. Body weight (BW), body condition score (BCS), milk production (MP), presence of corpus luteum (CL) and pregnancy rate (PR) were measured during the experiment. In Experiment 1, at the end of winter, cows in the IP group weighed more (Pb0.05) and had greater (Pb0.05) BCS than cows in NP; these differences were maintained until day 270 pp. When AI commenced there were no difference in the incidence of CL presence and final PR was similar for cows in both treatments. MP was greater (Pb0.05) in IP than in NP cows (average: 3.8 vs. 2.4 kg/day). At weaning calves in IP were heavier than calves in NP group (182.6 vs. 117.3 kg). In Experiment 2 from the end of winter until AI, cows in the S group weighed more (Pb0.05) and had greater (Pb0.05) BCS than cows in NP and IP. At the beginning of AI there was a tendency (P= 0.08) for a higher percentage of cows in NP with CL compared to IP (86 vs. 54%), and there was no difference compared to S cows (71%). Final PR was similar for cows in all treatments (93, 92 and 100% for NP, IP and S, respectively). Milk production was greater (Pb0.001) in S than in NP cows (average: 3.8 vs. 2.8 kg/day), and no differences were found with respect to IP cows (3.3 kg/day). At weaning, calves from S were heavier than calves from IP. Both these groups of calves were heavier than NP calves (141.5, 134.1 vs. 122.4 kg; Pb0.05). Reproductive performance in autumn-calving cows managed during winter on native pastures was not affected during the following spring, but calves were lighter at weaning than those kept in better winter nutritional condition. 650 $aGANADO BOVINO 650 $aNUTRICION 650 $aPERIODO PERINATAL 650 $aVAQUILLONAS 653 $aAUTUMN CALVING 653 $aHEIFERS 653 $aMILK 653 $aPOSPARTUM 653 $aPOSTPARTO 653 $aWINTER 700 1 $aVELAZCO, J.I. 700 1 $aSCARSI, A. 700 1 $aLÓPEZ-MAZZ, C. 700 1 $aBANCHERO, G. 773 $tLivestock Science, 2012$gv. 144, no. 1, p. 103-109
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| Acceso al texto completo restringido a Biblioteca INIA Las Brujas. Por información adicional contacte bibliolb@inia.org.uy. |
Registro completo
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Biblioteca (s) : |
INIA Las Brujas. |
Fecha actual : |
26/02/2024 |
Actualizado : |
26/02/2024 |
Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
Circulación / Nivel : |
Internacional - -- |
Autor : |
JÁUREGUI, J.M.; MICHELINI, D.F.; SEVILLA, G.H.; BERHONGARAY, G.; BERONE, G.D.; BAUDRACCO, J.; CHILIBROSTE, P.; AGNUSDEI, M.G.; LATTANZI, F. |
Afiliación : |
J. M JÁUREGUI, Facultad de Ciencias Agrarias, Universidad Nacional del Litoral, Esperanza, Argentina; Livestock Division, Datamars SA, Lamone, Switzerland; D. F. MICHELINI, Departamento de Producción Animal y Pasturas, Facultad de Agronomía, Universidad de la República, Salto, Uruguay; G. H. SEVILLA, Estación Experimental Agropecuaria Concepción de Uruguay, Instituto Nacional de Tecnología Agropecuaria, Entre Ríos, Concepción del Uruguay, Argentina; G. BERHONGARAY, Facultad de Ciencias Agrarias, Universidad Nacional del Litoral, Esperanza, Argentina; ICiAgro Litoral, Universidad Nacional del Litoral-CONICET, Santa Fe, Argentina; G. D. BERONE, Estación Experimental Agropecuaria Balcarce, Instituto Nacional de Tecnología Agropecuaria, Buenos Aires, Balcarce, Argentina; Facultad de Ciencias Agrarias, Universidad Nacional de Mar del Plata, Mar del Plata, Argentina; J. BAUDRACCO, Facultad de Ciencias Agrarias, Universidad Nacional del Litoral, Esperanza, Argentina; ICiAgro Litoral, Universidad Nacional del Litoral-CONICET, Santa Fe, Argentina; PABLO CHILIBROSTE SYMONDS, Departamento de Producción Animal y Pasturas, Facultad de Agronomía, Universidad de la República, Paysandú, Uruguay; M. G. AGNUSDEI, Estación Experimental Agropecuaria Balcarce, Instituto Nacional de Tecnología Agropecuaria, Buenos Aires, Balcarce, Argentina; FERNANDO A. LATTANZI, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
Título : |
Tall fescue tiller survival over summer in a subtropical environment: The role of the size and depth of root systems. |
Fecha de publicación : |
2024 |
Fuente / Imprenta : |
Journal of Agronomy and Crop Science. 2024, Volume 210, Issue 1, article e12682. https://doi.org/10.1111/jac.12682 |
ISSN : |
0931-2250 |
DOI : |
10.1111/jac.12682 |
Idioma : |
Inglés |
Notas : |
Article history: Received 5 May 2023; Revised 20 October 2023; Accepted 1 November 2023. -- Correspondence: J. M. Jáuregui, Facultad de Ciencias Agrarias, Universidad Nacional del Litoral, Esperanza, Argentina. Email: josemartinjauregui@gmail.com -- Funding information:
Consejo Nacional de Investigaciones Científicas y Técnicas. -- |
Contenido : |
ABSTRACT.- Pasture persistence is a key determinant of the economic and environmental performance of pastoral animal production systems. Large and deep root systems that help resist summer water stress have been proposed as a relevant trait for vegetative persistence of perennial temperate forage species growing in subtropical climates or under future climatically challenging scenarios. In a previous study [Jauregui et al., 2017. Persistence of tall fescue in a subtropical environment: Tiller survival over summer in response to flowering control and nitrogen supply. Grass and Forage Science 72, 454-466] we have shown that nitrogen fertilization and grazing management aimed at 'control flowering' increased the survival of tall fescue tillers during harsh summers in Uruguay (lat. 32°S). Here we assessed: (i) to what extent tiller survival is mediated by root system size in spring and (ii) what consequences tiller survival entails for root mass, depth and morphology the following autumn. In two field experiments, significant increases in tiller survival in response to nitrogen fertilization and grazing management (+60% and +80% in 2011/12 and 2012/13, respectively) were not related to concomitant effects on the size or depth of the root system in spring (p >.10). Even when six-fold within-treatment variation in root mass was observed, within-treatment variation in summer tiller survival was little affected (<15%, p =.08). In turn, differences in tiller survival over summer affected little root system characteristics the following autumn. Therefore, we found scant support for the hypothesis that large and deep root systems contribute to survival of tall fescue tillers in this subtropical humid climate. Except for soils with less than 30 mm of plant available water holding capacity, summer water deficits did not induce severe tiller mortality in tall fescue in this climate. © 2024 Wiley-VCH GmbH. Published by John Wiley & Sons Ltd. MenosABSTRACT.- Pasture persistence is a key determinant of the economic and environmental performance of pastoral animal production systems. Large and deep root systems that help resist summer water stress have been proposed as a relevant trait for vegetative persistence of perennial temperate forage species growing in subtropical climates or under future climatically challenging scenarios. In a previous study [Jauregui et al., 2017. Persistence of tall fescue in a subtropical environment: Tiller survival over summer in response to flowering control and nitrogen supply. Grass and Forage Science 72, 454-466] we have shown that nitrogen fertilization and grazing management aimed at 'control flowering' increased the survival of tall fescue tillers during harsh summers in Uruguay (lat. 32°S). Here we assessed: (i) to what extent tiller survival is mediated by root system size in spring and (ii) what consequences tiller survival entails for root mass, depth and morphology the following autumn. In two field experiments, significant increases in tiller survival in response to nitrogen fertilization and grazing management (+60% and +80% in 2011/12 and 2012/13, respectively) were not related to concomitant effects on the size or depth of the root system in spring (p >.10). Even when six-fold within-treatment variation in root mass was observed, within-treatment variation in summer tiller survival was little affected (<15%, p =.08). In turn, differences in tiller survival over summer affe... Presentar Todo |
Palabras claves : |
Forage; Grazing management; Heat stress; Nitrogen fertilisation; Partnership for the goals - Goal 17; Pasture persistence; Sustainable Development Goals (SDGs). |
Asunto categoría : |
F01 Cultivo |
Marc : |
LEADER 03371naa a2200337 a 4500 001 1064473 005 2024-02-26 008 2024 bl uuuu u00u1 u #d 022 $a0931-2250 024 7 $a10.1111/jac.12682$2DOI 100 1 $aJÁUREGUI, J.M. 245 $aTall fescue tiller survival over summer in a subtropical environment$bThe role of the size and depth of root systems.$h[electronic resource] 260 $c2024 500 $aArticle history: Received 5 May 2023; Revised 20 October 2023; Accepted 1 November 2023. -- Correspondence: J. M. Jáuregui, Facultad de Ciencias Agrarias, Universidad Nacional del Litoral, Esperanza, Argentina. Email: josemartinjauregui@gmail.com -- Funding information: Consejo Nacional de Investigaciones Científicas y Técnicas. -- 520 $aABSTRACT.- Pasture persistence is a key determinant of the economic and environmental performance of pastoral animal production systems. Large and deep root systems that help resist summer water stress have been proposed as a relevant trait for vegetative persistence of perennial temperate forage species growing in subtropical climates or under future climatically challenging scenarios. In a previous study [Jauregui et al., 2017. Persistence of tall fescue in a subtropical environment: Tiller survival over summer in response to flowering control and nitrogen supply. Grass and Forage Science 72, 454-466] we have shown that nitrogen fertilization and grazing management aimed at 'control flowering' increased the survival of tall fescue tillers during harsh summers in Uruguay (lat. 32°S). Here we assessed: (i) to what extent tiller survival is mediated by root system size in spring and (ii) what consequences tiller survival entails for root mass, depth and morphology the following autumn. In two field experiments, significant increases in tiller survival in response to nitrogen fertilization and grazing management (+60% and +80% in 2011/12 and 2012/13, respectively) were not related to concomitant effects on the size or depth of the root system in spring (p >.10). Even when six-fold within-treatment variation in root mass was observed, within-treatment variation in summer tiller survival was little affected (<15%, p =.08). In turn, differences in tiller survival over summer affected little root system characteristics the following autumn. Therefore, we found scant support for the hypothesis that large and deep root systems contribute to survival of tall fescue tillers in this subtropical humid climate. Except for soils with less than 30 mm of plant available water holding capacity, summer water deficits did not induce severe tiller mortality in tall fescue in this climate. © 2024 Wiley-VCH GmbH. Published by John Wiley & Sons Ltd. 653 $aForage 653 $aGrazing management 653 $aHeat stress 653 $aNitrogen fertilisation 653 $aPartnership for the goals - Goal 17 653 $aPasture persistence 653 $aSustainable Development Goals (SDGs) 700 1 $aMICHELINI, D.F. 700 1 $aSEVILLA, G.H. 700 1 $aBERHONGARAY, G. 700 1 $aBERONE, G.D. 700 1 $aBAUDRACCO, J. 700 1 $aCHILIBROSTE, P. 700 1 $aAGNUSDEI, M.G. 700 1 $aLATTANZI, F. 773 $tJournal of Agronomy and Crop Science. 2024, Volume 210, Issue 1, article e12682. https://doi.org/10.1111/jac.12682
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