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| Acceso al texto completo restringido a Biblioteca INIA La Estanzuela. Por información adicional contacte bib_le@inia.org.uy. |
Registro completo
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Biblioteca (s) : |
INIA La Estanzuela. |
Fecha : |
13/05/2019 |
Actualizado : |
27/01/2021 |
Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
Autor : |
MENDOZA, A.; WIJMA, R.; MORALES-PIÑEYRUA, J.; CAVESTANY, D. |
Afiliación : |
ALEJANDRO FRANCISCO MENDOZA AGUIAR, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay.//Departamento de Bovinos, Facultad de Veterinaria, Universidad de la República, San José, Uruguay.; ROBERT WIJMA CABRERA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay.//Servicios técnicos vacuno de leche, COVAP, Ctra. Canaleja, CP 14400, Pozoblanco, Spain.; JESSICA TATIANA MORALES PIÑEYRUA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; DANIEL CAVESTANY BOCKING, Departamento de Reproducción, Facultad de Veterinaria, Universidad de la República, Uruguay.//Unidad de Posgrados,Facultad de Veterinaria,Universidad de la República,Uruguay. |
Título : |
Carbohydrate source offered in the prepartum diet did not affect postpartum metabolic status or milk yield in dairy cows. |
Fecha de publicación : |
2019 |
Fuente / Imprenta : |
Animal, Volume 13, Issue 10, 2019, Pages 2289-2296. Doi: https://doi.org/10.1017/S1751731119000387 |
ISSN : |
1751-732X (Online) |
DOI : |
10.1017/S1751731119000387 |
Idioma : |
Inglés |
Notas : |
Article history: Received 10 July 2018.// Accepted 5 February 2019//Published online: 05 March 2019/ Available online 7 December 2020. |
Contenido : |
Abstract: Increasing the provision of non- fibrou s carbohydrate s (NFC) during the prepartum period is a feeding strategy that has been recommended to facilitate the transition to the onset of lactation and improve dairy cow performance, but results ar e contradictory, probably because most studies have confounded the effect s of level and source of energy. The objective of this experiment was to evaluate the effect of the source of carbohydrate offered in the prepartum diet on postpartum cow performance. Holstein dairy cows ( n = 24) were assigned to receive diets with either low (LNFC ), or high (HNFC) levels of NFC during the last 3 weeks before expec ted calving date according to a randomized complete block design. Soybean hulls and corn grain were the main energy ingredient s in the LNFC and HNFC total mixed rations (TMR), respectively, and diet s were designed t o be isocaloric and isopoteic. After calving, all cows were managed as a single group until da y 56 postpartum and grazed on improved pastures and were supplemented with a TMR. Body condition score evaluation and blood sampling were performed weekly throughout the experimental period to monitor the metabolic status of the animals. Prepartum glucose concentrations tended to be greater in HNFC than LNFC, but there was no effect on prepartum or postpartum insulin concentrations. Although nutrient intake was greater in the immediate week after calving in HNFC than LNFC, treatment did not affect milk yield and composition. In conclusion, increasing the NFC intake during the prepartum period, at a similar level of energy and protein intake , had a margin al residual effect on postpartum intake, and did not affect metabolic status or milk production . MenosAbstract: Increasing the provision of non- fibrou s carbohydrate s (NFC) during the prepartum period is a feeding strategy that has been recommended to facilitate the transition to the onset of lactation and improve dairy cow performance, but results ar e contradictory, probably because most studies have confounded the effect s of level and source of energy. The objective of this experiment was to evaluate the effect of the source of carbohydrate offered in the prepartum diet on postpartum cow performance. Holstein dairy cows ( n = 24) were assigned to receive diets with either low (LNFC ), or high (HNFC) levels of NFC during the last 3 weeks before expec ted calving date according to a randomized complete block design. Soybean hulls and corn grain were the main energy ingredient s in the LNFC and HNFC total mixed rations (TMR), respectively, and diet s were designed t o be isocaloric and isopoteic. After calving, all cows were managed as a single group until da y 56 postpartum and grazed on improved pastures and were supplemented with a TMR. Body condition score evaluation and blood sampling were performed weekly throughout the experimental period to monitor the metabolic status of the animals. Prepartum glucose concentrations tended to be greater in HNFC than LNFC, but there was no effect on prepartum or postpartum insulin concentrations. Although nutrient intake was greater in the immediate week after calving in HNFC than LNFC, treatment did not affect milk yield an... Presentar Todo |
Palabras claves : |
DAIRY COW; GRAZING; HIDRATOS DE CARBONO NO FIBROSOS; NON-FIBROUS CARBOHYDRATES; PERÍODO DE TRANSICIÓN; STARCH; TRANSITION PERIOD; VACA LECHERA. |
Thesagro : |
ALMIDÓN; PASTOREO; PRODUCCION LECHERA. |
Asunto categoría : |
-- |
Marc : |
LEADER 02886naa a2200325 a 4500 001 1059761 005 2021-01-27 008 2019 bl uuuu u00u1 u #d 022 $a1751-732X (Online) 024 7 $a10.1017/S1751731119000387$2DOI 100 1 $aMENDOZA, A. 245 $aCarbohydrate source offered in the prepartum diet did not affect postpartum metabolic status or milk yield in dairy cows.$h[electronic resource] 260 $c2019 500 $aArticle history: Received 10 July 2018.// Accepted 5 February 2019//Published online: 05 March 2019/ Available online 7 December 2020. 520 $aAbstract: Increasing the provision of non- fibrou s carbohydrate s (NFC) during the prepartum period is a feeding strategy that has been recommended to facilitate the transition to the onset of lactation and improve dairy cow performance, but results ar e contradictory, probably because most studies have confounded the effect s of level and source of energy. The objective of this experiment was to evaluate the effect of the source of carbohydrate offered in the prepartum diet on postpartum cow performance. Holstein dairy cows ( n = 24) were assigned to receive diets with either low (LNFC ), or high (HNFC) levels of NFC during the last 3 weeks before expec ted calving date according to a randomized complete block design. Soybean hulls and corn grain were the main energy ingredient s in the LNFC and HNFC total mixed rations (TMR), respectively, and diet s were designed t o be isocaloric and isopoteic. After calving, all cows were managed as a single group until da y 56 postpartum and grazed on improved pastures and were supplemented with a TMR. Body condition score evaluation and blood sampling were performed weekly throughout the experimental period to monitor the metabolic status of the animals. Prepartum glucose concentrations tended to be greater in HNFC than LNFC, but there was no effect on prepartum or postpartum insulin concentrations. Although nutrient intake was greater in the immediate week after calving in HNFC than LNFC, treatment did not affect milk yield and composition. In conclusion, increasing the NFC intake during the prepartum period, at a similar level of energy and protein intake , had a margin al residual effect on postpartum intake, and did not affect metabolic status or milk production . 650 $aALMIDÓN 650 $aPASTOREO 650 $aPRODUCCION LECHERA 653 $aDAIRY COW 653 $aGRAZING 653 $aHIDRATOS DE CARBONO NO FIBROSOS 653 $aNON-FIBROUS CARBOHYDRATES 653 $aPERÍODO DE TRANSICIÓN 653 $aSTARCH 653 $aTRANSITION PERIOD 653 $aVACA LECHERA 700 1 $aWIJMA, R. 700 1 $aMORALES-PIÑEYRUA, J. 700 1 $aCAVESTANY, D. 773 $tAnimal, Volume 13, Issue 10, 2019, Pages 2289-2296. Doi: https://doi.org/10.1017/S1751731119000387
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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 : |
21/02/2014 |
Actualizado : |
04/12/2018 |
Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
Circulación / Nivel : |
A - 2 |
Autor : |
OLMOS, F.; WILMAN, D.; HAMILTON, R. S. |
Afiliación : |
FERNANDO ELCEAR OLMOS LOPEZ, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; DAVID WILMAN, Institute of Rural Studies, University of Wales, U.K; RUARAIDH SACKVILLE HAMILTON, Institute of Grassland and Environmental Research, U.K. |
Título : |
Variation between and within Trifolium repens L. populations collected from sown swards in Uruguay. |
Fecha de publicación : |
2003 |
Fuente / Imprenta : |
Euphytica, March 2003, vol. 130, Issue 1, pages 131-141. |
ISSN : |
0014-2336 |
DOI : |
10.1023/A:1022333125560 |
Idioma : |
Inglés |
Notas : |
Article history: Received 9 November 2001 // Accepted 29 September 2002.
This revised version was published online in July 2006 with corrections to the Cover Date. |
Contenido : |
SUMMARY.
Nineteen Trifolium repens L. (white clover) populations were collected in different parts of Uruguay (where conditions are marginal for the species) from swards sown 2?15 years earlier. Twenty five genotypes of each population were grown as spaced plants on a single site. Leaflet length and width, petiole length, plant height, plant diameter and internode length were recorded. In a second experiment, ten of the populations were studied in a similar way. Large genetic correlations were obtained among leaflet length, leaflet width, petiole length and plant height as one group, and among major plant diameter, minor plant diameter and internode length as another group, in both experiments. Collection site characteristics that tended to result in relatively short, small-leaved plants were: the sowing of cv. Bayucuá or Santa Fé (rather than Zapicán or Yi); a relatively old sward; relatively high available soil P; overgrazing; and dry conditions. There was an indication that, in some respects, there was less variation within a population in older than in younger swards. Overall and within populations heritabilities were relatively high for leaflet length, leaflet width and petiole length and relatively low for plant diameter, with plant height intermediate. Genotypes from populations (such as that from Romero) that survived for 15 years in unfavourable conditions could be useful in a plant breeding programme. Selection for rather smaller-leaved types might enhance persistence.
© 2003 Kluwer Academic Publishers. Printed in the Netherlands. MenosSUMMARY.
Nineteen Trifolium repens L. (white clover) populations were collected in different parts of Uruguay (where conditions are marginal for the species) from swards sown 2?15 years earlier. Twenty five genotypes of each population were grown as spaced plants on a single site. Leaflet length and width, petiole length, plant height, plant diameter and internode length were recorded. In a second experiment, ten of the populations were studied in a similar way. Large genetic correlations were obtained among leaflet length, leaflet width, petiole length and plant height as one group, and among major plant diameter, minor plant diameter and internode length as another group, in both experiments. Collection site characteristics that tended to result in relatively short, small-leaved plants were: the sowing of cv. Bayucuá or Santa Fé (rather than Zapicán or Yi); a relatively old sward; relatively high available soil P; overgrazing; and dry conditions. There was an indication that, in some respects, there was less variation within a population in older than in younger swards. Overall and within populations heritabilities were relatively high for leaflet length, leaflet width and petiole length and relatively low for plant diameter, with plant height intermediate. Genotypes from populations (such as that from Romero) that survived for 15 years in unfavourable conditions could be useful in a plant breeding programme. Selection for rather smaller-leaved types might enhance persiste... Presentar Todo |
Palabras claves : |
GENETIC CORRELATIONS; GENETIC SHIFT; HERIABILITY; MORPHOLOGICAL VARIATION; WHITE CLOVER. |
Thesagro : |
TREBOL BLANCO; URUGUAY. |
Asunto categoría : |
-- |
Marc : |
LEADER 02496naa a2200265 a 4500 001 1002878 005 2018-12-04 008 2003 bl uuuu u00u1 u #d 022 $a0014-2336 024 7 $a10.1023/A:1022333125560$2DOI 100 1 $aOLMOS, F. 245 $aVariation between and within Trifolium repens L. populations collected from sown swards in Uruguay.$h[electronic resource] 260 $c2003 500 $aArticle history: Received 9 November 2001 // Accepted 29 September 2002. This revised version was published online in July 2006 with corrections to the Cover Date. 520 $aSUMMARY. Nineteen Trifolium repens L. (white clover) populations were collected in different parts of Uruguay (where conditions are marginal for the species) from swards sown 2?15 years earlier. Twenty five genotypes of each population were grown as spaced plants on a single site. Leaflet length and width, petiole length, plant height, plant diameter and internode length were recorded. In a second experiment, ten of the populations were studied in a similar way. Large genetic correlations were obtained among leaflet length, leaflet width, petiole length and plant height as one group, and among major plant diameter, minor plant diameter and internode length as another group, in both experiments. Collection site characteristics that tended to result in relatively short, small-leaved plants were: the sowing of cv. Bayucuá or Santa Fé (rather than Zapicán or Yi); a relatively old sward; relatively high available soil P; overgrazing; and dry conditions. There was an indication that, in some respects, there was less variation within a population in older than in younger swards. Overall and within populations heritabilities were relatively high for leaflet length, leaflet width and petiole length and relatively low for plant diameter, with plant height intermediate. Genotypes from populations (such as that from Romero) that survived for 15 years in unfavourable conditions could be useful in a plant breeding programme. Selection for rather smaller-leaved types might enhance persistence. © 2003 Kluwer Academic Publishers. Printed in the Netherlands. 650 $aTREBOL BLANCO 650 $aURUGUAY 653 $aGENETIC CORRELATIONS 653 $aGENETIC SHIFT 653 $aHERIABILITY 653 $aMORPHOLOGICAL VARIATION 653 $aWHITE CLOVER 700 1 $aWILMAN, D. 700 1 $aHAMILTON, R. S. 773 $tEuphytica, March 2003, vol. 130, Issue 1, pages 131-141.
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