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Registro completo
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Biblioteca (s) : |
INIA La Estanzuela. |
Fecha : |
18/12/2020 |
Actualizado : |
02/09/2022 |
Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
Autor : |
BANCHERO, G.; STEFANOVA, K.; LINDSAY, D.R.; QUINTANS, G.; BALDI, F.; MILTON, J.T.B.; MARTIN, G.B. |
Afiliación : |
GEORGGET ELIZABETH BANCHERO HUNZIKER, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; UWA School of Agriculture and Environment, The University of Western Australia, Crawley 6009, Australia.; UWA Institute of Agriculture, The University of Western Australia.; K. STEFANOVA, UWA School of Agriculture and Environment, The University of Western Australia, Crawley 6009, Australia.; D.R. LINDSAY, UWA School of Agriculture and Environment, The University of Western Australia, Crawley 6009, Australia.; GRACIELA QUINTANS ILARIA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; FERNANDO BALDI, Departament of Animal Science, College of Agricultural and Veterinarian Sciences, São Paulo State University (UNESP), Jaboticabal/SP, CEP 14870-720, Brazil.; UWA School of Agriculture and Environment, The University of Western Australia, Crawley 6009, Australia; UWA School of Agriculture and Environment, The University of Western Australia, Crawley 6009, Australia. |
Título : |
Ovulation and ovulation rate in ewes under grazing conditions: factors affecting the response to short-term supplementation. |
Fecha de publicación : |
2021 |
Fuente / Imprenta : |
Animal, Volume 15, Issue 2, February 2021, Article number 100100. OPEN ACCESS. Doi: https://doi.org/10.1016/j.animal.2020.100100 |
ISSN : |
1751-7311 |
DOI : |
10.1016/j.animal.2020.100100 |
Idioma : |
Inglés |
Notas : |
Article history:Received 11 July 2020/Received in revised form 22 September 2020/Accepted 24 September 2020/
Available online 14 dic 2020. Corresponding author : E-mail address: gbanchero@inia.org.uy (G.E. Banchero). |
Contenido : |
Abstract:
The relationships between ovulation rate and nutrition remain confused, probably because of uncontrolled variation in experimental conditions. To help resolve the problem, we analyzed data from 20 experiments conducted between 2002 and 2016, in Uruguay with grazing ewes. All experiments were carried out by a single laboratory under comparable conditions of experimental design and measured variables. The studies used a total of 3?720 ewes, of purebred Corriedale, Polwarth, or East Friesian x Polwarth genotypes. In all experiments, a control group grazed native pastures and extra nutrition was provided to the treatment groups using either improved pastures or supplements. Ovulation rate was measured by counting corpora lutea using laparoscopy or rectal ultrasound or by counting foetuses at ultrasound on day 45 of gestation. For statistical analysis, data were grouped according to nutritional treatment (control or supplemented) and, within these groups, type of supplement to provide energy or protein (protected or not from rumen degradation). Across all experiments, 92?99% of the ewes ovulated and the effects of diet, length of supplementation, and initial live weight and genotype are reported. Within diets, ovulation was most affected by overall energy intake during supplementation (P?0.01). Ewes that grazed native pastures supplemented with protein supplements had higher ovulation rates (P?0.05) than control ewes grazing only native pastures. The addition of tannins to the protein supplement, to protect it from degradation in the rumen, did not further increase the ovulation rate. In unsupplemented ewes that had access to legume pastures, ovulation rates did not increase when the legume pasture was rich in tannins although only ewes that grazed tanniniferous legumes had marginally higher ovulation rates than the control ewes (P?0.05). When ewes grazing native pastures were supplemented with energy, their ovulation rate did not increase above those of nonsupplemented ewes. Live weight at the start of supplementation also affected ovulation rate. We conclude that ovulation was most affected by overall energy intake, whereas the factors that affected ovulation rate during short-tern nutritional supplementation were intake of protein from highly digested supplements or dietary protein protected from ruminal degradation. MenosAbstract:
The relationships between ovulation rate and nutrition remain confused, probably because of uncontrolled variation in experimental conditions. To help resolve the problem, we analyzed data from 20 experiments conducted between 2002 and 2016, in Uruguay with grazing ewes. All experiments were carried out by a single laboratory under comparable conditions of experimental design and measured variables. The studies used a total of 3?720 ewes, of purebred Corriedale, Polwarth, or East Friesian x Polwarth genotypes. In all experiments, a control group grazed native pastures and extra nutrition was provided to the treatment groups using either improved pastures or supplements. Ovulation rate was measured by counting corpora lutea using laparoscopy or rectal ultrasound or by counting foetuses at ultrasound on day 45 of gestation. For statistical analysis, data were grouped according to nutritional treatment (control or supplemented) and, within these groups, type of supplement to provide energy or protein (protected or not from rumen degradation). Across all experiments, 92?99% of the ewes ovulated and the effects of diet, length of supplementation, and initial live weight and genotype are reported. Within diets, ovulation was most affected by overall energy intake during supplementation (P?0.01). Ewes that grazed native pastures supplemented with protein supplements had higher ovulation rates (P?0.05) than control ewes grazing only native pastures. The addition of tan... Presentar Todo |
Palabras claves : |
ENERGY; OVINE; PASTURES; PROTEIN; TANNINS. |
Thesagro : |
OVINOS. |
Asunto categoría : |
-- |
URL : |
http://www.ainfo.inia.uy/digital/bitstream/item/16665/1/1-s2.0-S1751731120301026-main.pdf
https://www.sciencedirect.com/science/article/pii/S1751731120301026
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Marc : |
LEADER 03497naa a2200301 a 4500 001 1061597 005 2022-09-02 008 2021 bl uuuu u00u1 u #d 022 $a1751-7311 024 7 $a10.1016/j.animal.2020.100100$2DOI 100 1 $aBANCHERO, G. 245 $aOvulation and ovulation rate in ewes under grazing conditions$bfactors affecting the response to short-term supplementation.$h[electronic resource] 260 $c2021 500 $aArticle history:Received 11 July 2020/Received in revised form 22 September 2020/Accepted 24 September 2020/ Available online 14 dic 2020. Corresponding author : E-mail address: gbanchero@inia.org.uy (G.E. Banchero). 520 $aAbstract: The relationships between ovulation rate and nutrition remain confused, probably because of uncontrolled variation in experimental conditions. To help resolve the problem, we analyzed data from 20 experiments conducted between 2002 and 2016, in Uruguay with grazing ewes. All experiments were carried out by a single laboratory under comparable conditions of experimental design and measured variables. The studies used a total of 3?720 ewes, of purebred Corriedale, Polwarth, or East Friesian x Polwarth genotypes. In all experiments, a control group grazed native pastures and extra nutrition was provided to the treatment groups using either improved pastures or supplements. Ovulation rate was measured by counting corpora lutea using laparoscopy or rectal ultrasound or by counting foetuses at ultrasound on day 45 of gestation. For statistical analysis, data were grouped according to nutritional treatment (control or supplemented) and, within these groups, type of supplement to provide energy or protein (protected or not from rumen degradation). Across all experiments, 92?99% of the ewes ovulated and the effects of diet, length of supplementation, and initial live weight and genotype are reported. Within diets, ovulation was most affected by overall energy intake during supplementation (P?0.01). Ewes that grazed native pastures supplemented with protein supplements had higher ovulation rates (P?0.05) than control ewes grazing only native pastures. The addition of tannins to the protein supplement, to protect it from degradation in the rumen, did not further increase the ovulation rate. In unsupplemented ewes that had access to legume pastures, ovulation rates did not increase when the legume pasture was rich in tannins although only ewes that grazed tanniniferous legumes had marginally higher ovulation rates than the control ewes (P?0.05). When ewes grazing native pastures were supplemented with energy, their ovulation rate did not increase above those of nonsupplemented ewes. Live weight at the start of supplementation also affected ovulation rate. We conclude that ovulation was most affected by overall energy intake, whereas the factors that affected ovulation rate during short-tern nutritional supplementation were intake of protein from highly digested supplements or dietary protein protected from ruminal degradation. 650 $aOVINOS 653 $aENERGY 653 $aOVINE 653 $aPASTURES 653 $aPROTEIN 653 $aTANNINS 700 1 $aSTEFANOVA, K. 700 1 $aLINDSAY, D.R. 700 1 $aQUINTANS, G. 700 1 $aBALDI, F. 700 1 $aMILTON, J.T.B. 700 1 $aMARTIN, G.B. 773 $tAnimal, Volume 15, Issue 2, February 2021, Article number 100100. OPEN ACCESS. Doi: https://doi.org/10.1016/j.animal.2020.100100
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1. | | LOICK, N.; DIXON, E.; MATTHEWS, G.P.; MÜLLER, CH.; CIGANDA, V.; LÓPEZ-AIZPÚN, M.; REPULLO, M.A.; CARDENAS, L.M. Application of a triple 15N tracing technique to elucidate N transformations in a UK grassland soil. Geoderma, 1 March 2021, Volume 385, Article number 114844. Doi: https://doi.org/10.1016/j.geoderma.2020.114844 Article history: Received 14 August 2020/ Revised 11 November 2020/ Accepted 13 November 2020/ Available online 2 December 2020.Tipo: Artículos en Revistas Indexadas Internacionales | Circulación / Nivel : Internacional - -- |
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2. | | LOICK, N.; DIXON, D.R.; REPULLO RUIBÉRRIZ DE TORRES, M.A.; CIGANDA, V.; LOPEZ-AIZPUN, M.A.; MATTHEWS G.P; MÜLLER, C.; CARDENAS, L. Using the triple labelling technique to apportion N2O emissions to nitrification and denitrification from different nitrogen sources at different water-filled-pore-spaces. Geophysical Research Abstracts, v. 19, EGU2017-17534, 2017.Tipo: Abstracts/Resúmenes |
Biblioteca(s): INIA La Estanzuela. |
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3. | | LOICK, N.; DIXON, E.R.; REPULLO, M.A.; CIGANDA, V.; LÓPEZ-AIZPUN, M.; MATTHEWS, G.P.; MUELLER, C.; CÁRDENAS, L. The apportioning of N2O emissions to nitrification and denitrification from different nitrogen sources at different water-filled-poreSpaces. In Nitrogen Workshop ,19o. Skara, Sweden: Swedish University of Agricultural Sciences (SLU); International Nitrogen Initiative (INI), 2016.Biblioteca(s): INIA La Estanzuela. |
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