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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 : |
25/07/2024 |
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Actualizado : |
25/07/2024 |
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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 : |
BRIANO, C.; MEIKLE, A.; VELAZCO, J.I.; QUINTANS, G. |
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Afiliación : |
CAROLINA BRIANO, DILAVE Miguel C Rubino, Avelino Miranda 2045, Treinta y Tres, Uruguay; ANA MEIKLE, Faculty of Veterinary Medicine, University of Uruguay, Ruta 8 Km 18, Montevideo, Uruguay; JOSÉ IGNACIO VELAZCO DE LOS REYES, Catholic University of Uruguay, Av. 8 de Octubre 2738, Montevideo, Uruguay; GRACIELA QUINTANS ILARIA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; ORCID: https://orcid.org/0000-0003-4746-6468. |
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Título : |
Metabolic and hormonal profiles and productive performance in primiparous and multiparous cows grazing different forage allowance in late gestation. |
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Fecha de publicación : |
2024 |
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Fuente / Imprenta : |
Theriogenology, 2024, Volume 227, Pages 68-76. https://doi.org/10.1016/j.theriogenology.2024.07.007 |
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ISSN : |
0093-691X |
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DOI : |
10.1016/j.theriogenology.2024.07.007 |
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Idioma : |
Inglés |
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Notas : |
Article history: Received 8 December 2023; Received in revised form 5 July 2024; Accepted 8 July 2024; Available online 9 July 2024. -- Corresponding author: Briano, C.; Lautaro Guerra 1626, Treinta y Tres, Uruguay; email:cbriano@mgap.gub.uy -- Funding: This work was supported by the National Institute for Agricultural Research (INIA), Uruguay and by ANII - BE_POS_2010_1_2566/PR_FVM_2009_1_3121. |
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Contenido : |
ABSTRACT.- The aim of this study was to evaluate two levels of forage allowance (FA) during the prepartum period on metabolic, hormonal, productive, and reproductive variables in primiparous (P) and multiparous (M) beef cows. Six weeks before calving, 40 P and 42 M cows were assigned to two FA (native pastures) treatments until calving (day 0): High (15 kg DM/100 BW; H) and Low (5 kg DM/100 BW; L). After calving all cows were managed together. High FA cows presented greater intake than L cows, while M tended to have greater intake than P cows. Increased herbage allowance in late gestation in beef cows successfully improved forage intake and energy balance reflected in body condition score and metabolic and endocrine markers. Also, high forage allowance increased milk yield (5.4 vs 4.6 kg/d, P < 0.05) and calves daily gain rate during the first two months of age (0.88 vs 0.82 kg/d, P < 0.05) in H respect to L cows. Pregnancy rate was greater in H vs L cows (40 vs 28 %, P < 0,05). The endocrine metabolic response to higher forage allowance depended on parity, as primiparous cows showed a greater imbalance around calving. Moreover, most primiparous cows were not pregnant at the end of the breeding season, consistent with their prolonged anestrous. Multiparous cows had better productive and reproductive performance than primiparous cows, showing that growing cows have a pronounced negative energy balance reflected in most of the evaluated parameters. © 2024 Elsevier Inc. |
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Palabras claves : |
Beef cows; Energy metabolism; Grazing; Herbage allowance; Milk; Reproductive performance; SISTEMA GANADERO EXTENSIVO - INIA. |
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Asunto categoría : |
L02 Alimentación animal |
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Marc : |
LEADER 02801naa a2200277 a 4500
001 1064748
005 2024-07-25
008 2024 bl uuuu u00u1 u #d
022 $a0093-691X
024 7 $a10.1016/j.theriogenology.2024.07.007$2DOI
100 1 $aBRIANO, C.
245 $aMetabolic and hormonal profiles and productive performance in primiparous and multiparous cows grazing different forage allowance in late gestation.$h[electronic resource]
260 $c2024
500 $aArticle history: Received 8 December 2023; Received in revised form 5 July 2024; Accepted 8 July 2024; Available online 9 July 2024. -- Corresponding author: Briano, C.; Lautaro Guerra 1626, Treinta y Tres, Uruguay; email:cbriano@mgap.gub.uy -- Funding: This work was supported by the National Institute for Agricultural Research (INIA), Uruguay and by ANII - BE_POS_2010_1_2566/PR_FVM_2009_1_3121.
520 $aABSTRACT.- The aim of this study was to evaluate two levels of forage allowance (FA) during the prepartum period on metabolic, hormonal, productive, and reproductive variables in primiparous (P) and multiparous (M) beef cows. Six weeks before calving, 40 P and 42 M cows were assigned to two FA (native pastures) treatments until calving (day 0): High (15 kg DM/100 BW; H) and Low (5 kg DM/100 BW; L). After calving all cows were managed together. High FA cows presented greater intake than L cows, while M tended to have greater intake than P cows. Increased herbage allowance in late gestation in beef cows successfully improved forage intake and energy balance reflected in body condition score and metabolic and endocrine markers. Also, high forage allowance increased milk yield (5.4 vs 4.6 kg/d, P < 0.05) and calves daily gain rate during the first two months of age (0.88 vs 0.82 kg/d, P < 0.05) in H respect to L cows. Pregnancy rate was greater in H vs L cows (40 vs 28 %, P < 0,05). The endocrine metabolic response to higher forage allowance depended on parity, as primiparous cows showed a greater imbalance around calving. Moreover, most primiparous cows were not pregnant at the end of the breeding season, consistent with their prolonged anestrous. Multiparous cows had better productive and reproductive performance than primiparous cows, showing that growing cows have a pronounced negative energy balance reflected in most of the evaluated parameters. © 2024 Elsevier Inc.
653 $aBeef cows
653 $aEnergy metabolism
653 $aGrazing
653 $aHerbage allowance
653 $aMilk
653 $aReproductive performance
653 $aSISTEMA GANADERO EXTENSIVO - INIA
700 1 $aMEIKLE, A.
700 1 $aVELAZCO, J.I.
700 1 $aQUINTANS, G.
773 $tTheriogenology, 2024, Volume 227, Pages 68-76. https://doi.org/10.1016/j.theriogenology.2024.07.007
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