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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; INIA Tacuarembó. |
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Fecha : |
21/10/2014 |
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Actualizado : |
25/11/2019 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Autor : |
REINA, L.; GALETTA, A.; VINCIGUERRA, V.; RESQUIN, F.; MENÉNDEZ, P. |
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Afiliación : |
JOSE FERNANDO RESQUIN PEREZ, Instituto Nacional de Investigación Agropecuaria (INIA), Uruguay. |
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Título : |
The relationship between Eucalyptus grandis lignin structure and kraft pulping parameters. |
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Fecha de publicación : |
2014 |
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Fuente / Imprenta : |
Journal of Analytical and Applied Pyrolysis, 2014, v.107, p.284-288. |
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ISSN : |
0165-2370 |
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DOI : |
10.1016/j.jaap.2014.03.013 |
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Idioma : |
Inglés |
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Notas : |
Article history: Received 10 December 2013 / Accepted 27 March 2014 / Available online 4 April 2014. |
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Contenido : |
ABSTRACT.
The syringyl/guaiacyl (S/G) ratio of Eucalyputs grandis lignin was determined and its relation with kraft pulping parameters was studied. Twenty one wood samples obtained from 10-year-old trees grown in the same place were analyzed using Py-GC-MS to determine the syringyl/guaiacyl (S/G) ratio. The samples were pulped to the same final lignin content (Kappa number 18) obtaining pulp yields between 48.8% and 54.3%. Relationships were observed between pulp yield and S/G ratio (r = 0.51) also between alkali charge used in pulping and S/G ratio (r = -0.60).
© 2014 Elsevier B.V. |
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Palabras claves : |
FOREST AND FORESTRY; FORESTACIÓN. |
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Thesagro : |
CONTENIDO DE LIGNINA; CROMATOGRAFÍA DE GASES; EUCALYPTUS GRANDIS. |
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Asunto categoría : |
K01 Ciencias forestales - Aspectos generales |
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Marc : |
LEADER 01479naa a2200265 a 4500
001 1051213
005 2019-11-25
008 2014 bl uuuu u00u1 u #d
022 $a0165-2370
024 7 $a10.1016/j.jaap.2014.03.013$2DOI
100 1 $aREINA, L.
245 $aThe relationship between Eucalyptus grandis lignin structure and kraft pulping parameters.$h[electronic resource]
260 $c2014
500 $aArticle history: Received 10 December 2013 / Accepted 27 March 2014 / Available online 4 April 2014.
520 $aABSTRACT. The syringyl/guaiacyl (S/G) ratio of Eucalyputs grandis lignin was determined and its relation with kraft pulping parameters was studied. Twenty one wood samples obtained from 10-year-old trees grown in the same place were analyzed using Py-GC-MS to determine the syringyl/guaiacyl (S/G) ratio. The samples were pulped to the same final lignin content (Kappa number 18) obtaining pulp yields between 48.8% and 54.3%. Relationships were observed between pulp yield and S/G ratio (r = 0.51) also between alkali charge used in pulping and S/G ratio (r = -0.60). © 2014 Elsevier B.V.
650 $aCONTENIDO DE LIGNINA
650 $aCROMATOGRAFÍA DE GASES
650 $aEUCALYPTUS GRANDIS
653 $aFOREST AND FORESTRY
653 $aFORESTACIÓN
700 1 $aGALETTA, A.
700 1 $aVINCIGUERRA, V.
700 1 $aRESQUIN, F.
700 1 $aMENÉNDEZ, P.
773 $tJournal of Analytical and Applied Pyrolysis, 2014$gv.107, p.284-288.
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Registro original : |
INIA Las Brujas (LB) |
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| Acceso al texto completo restringido a Biblioteca INIA Tacuarembó. Por información adicional contacte bibliotb@tb.inia.org.uy. |
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Registro completo
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Biblioteca (s) : |
INIA Tacuarembó; INIA Treinta y Tres. |
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Fecha actual : |
18/10/2018 |
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Actualizado : |
11/10/2019 |
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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 : |
LOPEZ VALIENTE, S.; MARESCA, S.; RODRÍGUEZ, A.M.; PALLADINO, R.A.; LACAU-MENGIDO, I.M.; LONG, N.M.; QUINTANS, G. |
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Afiliación : |
S. LÓPEZ VALIENTE, National Institute of Agricultural Technology (INTA). Experimental Station of Cuenca del Salado.; S. MARESCA, National Institute of Agricultural Technology (INTA). Experimental Station of Cuenca del Salado.; A.M. RODRÍGUEZ, National Institute of Agricultural Technology (INTA). Experimental Station of Cuenca del Salado.; R.A. PALLADINO, Facultad de Agronomía, Universidad de Buenos Aires. Facultad de Ciencias Agrarias, Universidad Nacional de Lomas de Zamora, Buenos Aires.; I.M. LACAU-MENGIDO, Laboratorio de Regulación Hipofisaria, Instituto de Biología y Medicina Experimental (CONICET).; N.M. LONG, Department of Animal and Veterinary Sciences. Clemson University.; GRACIELA QUINTANS ILARIA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
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Título : |
Effect of protein restriction of Angus cows during late gestation: subsequent reproductive performance and milk yield. |
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Fecha de publicación : |
2018 |
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Fuente / Imprenta : |
The Professional Animal Scientist, 2018, 34(3): 261-268. |
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DOI : |
10.15232/pas.2017-01701 |
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Idioma : |
Inglés |
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Contenido : |
Abstract:
The effect of level of CP fed during late gestation on reproductive performance and milk production was studied in multiparous cows. Sixty-eight pregnant Angus cows were used. At 121 d prepartum, cows were blocked by BW (409 ± 57 kg) and expected calving date, randomly assigned to a low-protein (LP = 6% CP) or high-protein diet (HP = 12% CP), and allocated to 12 pens per treatment.
After parturition, all cows were managed in a single group until weaning. Body weight and BCS were determined at the start of the experiment, at calving, and at weaning.
Nonesterified fatty acids, insulin, IGF-1, and glucose were determined every 24 d prepartum and nonesterified fatty acids and glucose every 38 d postpartum. Progesterone was quantified weekly to indicate luteal activity and estimate interval to first estrus. Milk production was measured until weaning. The HP cows had greater BW gain during the prepartum period (P < 0.01) and tended to gain more BCS (P = 0.06) than LP cows. The prepartum diet did not affect gestation length (P = 0.44) or interval from calving to the onset of luteal activity (P = 0.35).
Pregnancy rates, milk quality, and production were not influenced by dietary treatments. Cows in the HP treatment had greater prepartum serum urea concentrations than LP treatment (P < 0.05). In conclusion, protein level prepartum in multiparous beef cows affected the BW change at calving, without consequences on reproductive performance and milk quality and yield. |
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Palabras claves : |
LATE GESTATION; MILK YIELD; MULTIPAROUS COW; POSTPARTUM REPRODUCTIVE PERFORMANCE; PROTEIN RESTRICTION; VACAS MULTÍPARAS. |
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Thesagro : |
BOVINOS; VACAS. |
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Asunto categoría : |
L10 Genética y mejoramiento animal |
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Marc : |
LEADER 02405naa a2200301 a 4500
001 1059651
005 2019-10-11
008 2018 bl uuuu u00u1 u #d
024 7 $a10.15232/pas.2017-01701$2DOI
100 1 $aLOPEZ VALIENTE, S.
245 $aEffect of protein restriction of Angus cows during late gestation$bsubsequent reproductive performance and milk yield.$h[electronic resource]
260 $c2018
520 $aAbstract: The effect of level of CP fed during late gestation on reproductive performance and milk production was studied in multiparous cows. Sixty-eight pregnant Angus cows were used. At 121 d prepartum, cows were blocked by BW (409 ± 57 kg) and expected calving date, randomly assigned to a low-protein (LP = 6% CP) or high-protein diet (HP = 12% CP), and allocated to 12 pens per treatment. After parturition, all cows were managed in a single group until weaning. Body weight and BCS were determined at the start of the experiment, at calving, and at weaning. Nonesterified fatty acids, insulin, IGF-1, and glucose were determined every 24 d prepartum and nonesterified fatty acids and glucose every 38 d postpartum. Progesterone was quantified weekly to indicate luteal activity and estimate interval to first estrus. Milk production was measured until weaning. The HP cows had greater BW gain during the prepartum period (P < 0.01) and tended to gain more BCS (P = 0.06) than LP cows. The prepartum diet did not affect gestation length (P = 0.44) or interval from calving to the onset of luteal activity (P = 0.35). Pregnancy rates, milk quality, and production were not influenced by dietary treatments. Cows in the HP treatment had greater prepartum serum urea concentrations than LP treatment (P < 0.05). In conclusion, protein level prepartum in multiparous beef cows affected the BW change at calving, without consequences on reproductive performance and milk quality and yield.
650 $aBOVINOS
650 $aVACAS
653 $aLATE GESTATION
653 $aMILK YIELD
653 $aMULTIPAROUS COW
653 $aPOSTPARTUM REPRODUCTIVE PERFORMANCE
653 $aPROTEIN RESTRICTION
653 $aVACAS MULTÍPARAS
700 1 $aMARESCA, S.
700 1 $aRODRÍGUEZ, A.M.
700 1 $aPALLADINO, R.A.
700 1 $aLACAU-MENGIDO, I.M.
700 1 $aLONG, N.M.
700 1 $aQUINTANS, G.
773 $tThe Professional Animal Scientist, 2018, 34(3): 261-268.
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