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Registro completo
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Biblioteca (s) : |
INIA Las Brujas. |
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Fecha : |
16/11/2015 |
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Actualizado : |
16/11/2015 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Autor : |
KENYON, P.R.; VIÑOLES, C.; MORRIS, S.T |
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Afiliación : |
CAROLINA VIÑOLES GIL, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
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Título : |
Effect of teasing by the ram on the onset of puberty in Romney ewe lambs. |
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Fecha de publicación : |
2012 |
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Fuente / Imprenta : |
New Zealand Journal of Agricultural Research, 2012, v.55, no.3, p. 183-191. |
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ISSN : |
N 0028-8233 |
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DOI : |
10.1080/00288233.2012.693105 |
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Idioma : |
Inglés |
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Contenido : |
ABSTRACT.
In two consecutive years (2008 and 2009), ewe lambs that had not attained puberty were allocated to one of two groups (Unteased [n=50 in both years] or Teased [n = 50 in 2008 and n=49 in 2009]) for 17 days (D1 to D17). In 2009, the ovaries of all ewe lambs were examined on D5, D9 and D12 by transrectal ultrasonography. From D18 to D28, crayon-harnessed teaser rams were introduced to both groups each year. In both years a greater proportion (P < 0.05) of Teased than Unteased ewe lambs achieved puberty (based on progesterone concentrations) during D1 to D17 and displayed oestrus during D18 to D28. Teased ewe lambs had larger (P < 0.05) follicle diameters on D9 and D12 compared with the Unteased but differences in corpus luteum sizes were not found (P > 0.05). We have demonstrated that teasing advances the onset of puberty. In ewe lambs that responded to teasing, it appears the response is somewhat delayed in comparison to that observed in mature ewes. |
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Palabras claves : |
EWE LAMBS; HOGGETS; PUBERTY; TEASING. |
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Thesagro : |
CORDEROS. |
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Asunto categoría : |
-- |
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Marc : |
LEADER 01626naa a2200229 a 4500
001 1053922
005 2015-11-16
008 2012 bl uuuu u00u1 u #d
022 $aN 0028-8233
024 7 $a10.1080/00288233.2012.693105$2DOI
100 1 $aKENYON, P.R.
245 $aEffect of teasing by the ram on the onset of puberty in Romney ewe lambs.$h[electronic resource]
260 $c2012
520 $aABSTRACT. In two consecutive years (2008 and 2009), ewe lambs that had not attained puberty were allocated to one of two groups (Unteased [n=50 in both years] or Teased [n = 50 in 2008 and n=49 in 2009]) for 17 days (D1 to D17). In 2009, the ovaries of all ewe lambs were examined on D5, D9 and D12 by transrectal ultrasonography. From D18 to D28, crayon-harnessed teaser rams were introduced to both groups each year. In both years a greater proportion (P < 0.05) of Teased than Unteased ewe lambs achieved puberty (based on progesterone concentrations) during D1 to D17 and displayed oestrus during D18 to D28. Teased ewe lambs had larger (P < 0.05) follicle diameters on D9 and D12 compared with the Unteased but differences in corpus luteum sizes were not found (P > 0.05). We have demonstrated that teasing advances the onset of puberty. In ewe lambs that responded to teasing, it appears the response is somewhat delayed in comparison to that observed in mature ewes.
650 $aCORDEROS
653 $aEWE LAMBS
653 $aHOGGETS
653 $aPUBERTY
653 $aTEASING
700 1 $aVIÑOLES, C.
700 1 $aMORRIS, S.T
773 $tNew Zealand Journal of Agricultural Research, 2012$gv.55, no.3, p. 183-191.
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INIA Las Brujas (LB) |
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Registro completo
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Biblioteca (s) : |
INIA Las Brujas. |
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Fecha actual : |
23/10/2019 |
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Actualizado : |
23/10/2019 |
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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 : |
CONIBERTI, A.; FERRARI, V.; DISEGNA, E.; LAKSO, A.N.; GARCÍA PETILLO, M. |
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Afiliación : |
ANDRES CONIBERTI MUNDY, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; VIRGINIA PAULINA FERRARI MORENA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; EDGARDO JOSE DISEGNA LIGUORI, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; A.N. LAKSO, Department of Horticulture, Cornell University, USA; M. GARCÍA PETILLO, Departamento de Suelos y Aguas, Facultad de Agronom??a, UdelaR, Uruguay. |
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Título : |
Interactions of under-trellis cover crops and planting density to achieve vine balance in a temperate humid climate (Conference Paper). |
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Fecha de publicación : |
2017 |
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Fuente / Imprenta : |
Acta Horticulturae, 8 November 2017, 1177, p. 339-348. |
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Serie : |
(Acta Horticulturae; 1177) |
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ISBN : |
978-94-62611-73-3 |
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ISSN : |
0567-7572 (print) 2406-6168 (electronic) |
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DOI : |
10.17660/ActaHortic.2017.1177.49 |
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Idioma : |
Inglés |
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Notas : |
Article history: Published 8 November 2017. In: Acta Horticulturae (ISHS) 1177: International Symposium on Physiological Principles and Their Application to Fruit Production. Editor: T. Robinson. |
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Contenido : |
ABSTRACT.
The goal of our study was to improve 'Tannat' grape and wine composition, by achieving vine balance. We evaluated a new grape-growing paradigm for Uruguayan conditions that include unpredictable periods of water deficit or excess in nonirrigated vineyards and eliminates competition from cover crops. We used undertrellis cover crops (UTCC) to limit vine water availability, reduce vine growth rate and final canopy size. However, to avoid excessive vine water stress due to the UTCC competition, irrigation was used during water deficit periods. This strategy was tested in combination with variable planting density to optimize vine vigor control in our environment over two growing seasons in southern Uruguay. Two factors were evaluated in a split-split plot experiment with five replicates. Treatments were: UTCC (full cover of the vineyard soil with tall fescue) versus conventional alleyway tall fescue with 1.0 m wide weed-free strip under the trellis, and two spacings between vines (0.8 vs. 1.5 m). Deficit drip irrigation was provided at mid-day stem water potential (SWP) thresholds of -0.9 MPa early and -1.1 MPa later in season. Shoot growth rate, SWP, berry size and berry composition (Brix, organic acids, total anthocyanin) were monitored over the season as well as final yield, cluster and pruning weights. Preliminary results showed that UTCC regulated vine vegetative growth and final canopy size, reduced berry size, cluster weight and bunch-rot incidence as well as increased tartaric/malic ratio, Brix and anthocyanin concentration in grapes. The combination of UTCC and 1.5 m inter-row spacing led to below-optimal shoot growth. The use of such multiple techniques shows promise for achieving vine balance in high-capacity conditions.
© 2017 ISHS. MenosABSTRACT.
The goal of our study was to improve 'Tannat' grape and wine composition, by achieving vine balance. We evaluated a new grape-growing paradigm for Uruguayan conditions that include unpredictable periods of water deficit or excess in nonirrigated vineyards and eliminates competition from cover crops. We used undertrellis cover crops (UTCC) to limit vine water availability, reduce vine growth rate and final canopy size. However, to avoid excessive vine water stress due to the UTCC competition, irrigation was used during water deficit periods. This strategy was tested in combination with variable planting density to optimize vine vigor control in our environment over two growing seasons in southern Uruguay. Two factors were evaluated in a split-split plot experiment with five replicates. Treatments were: UTCC (full cover of the vineyard soil with tall fescue) versus conventional alleyway tall fescue with 1.0 m wide weed-free strip under the trellis, and two spacings between vines (0.8 vs. 1.5 m). Deficit drip irrigation was provided at mid-day stem water potential (SWP) thresholds of -0.9 MPa early and -1.1 MPa later in season. Shoot growth rate, SWP, berry size and berry composition (Brix, organic acids, total anthocyanin) were monitored over the season as well as final yield, cluster and pruning weights. Preliminary results showed that UTCC regulated vine vegetative growth and final canopy size, reduced berry size, cluster weight and bunch-rot incidence as well as i... Presentar Todo |
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Palabras claves : |
BOTRYTIS BUNCH ROT; TANNAT; VETETATIVE GROWTH. |
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Thesagro : |
VID. |
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Asunto categoría : |
-- |
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Marc : |
LEADER 02851naa a2200277 a 4500
001 1060337
005 2019-10-23
008 2017 bl uuuu u00u1 u #d
020 $a978-94-62611-73-3
022 $a0567-7572 (print) 2406-6168 (electronic)
024 7 $a10.17660/ActaHortic.2017.1177.49$2DOI
100 1 $aCONIBERTI, A.
245 $aInteractions of under-trellis cover crops and planting density to achieve vine balance in a temperate humid climate (Conference Paper).$h[electronic resource]
260 $c2017
490 $a(Acta Horticulturae; 1177)
500 $aArticle history: Published 8 November 2017. In: Acta Horticulturae (ISHS) 1177: International Symposium on Physiological Principles and Their Application to Fruit Production. Editor: T. Robinson.
520 $aABSTRACT. The goal of our study was to improve 'Tannat' grape and wine composition, by achieving vine balance. We evaluated a new grape-growing paradigm for Uruguayan conditions that include unpredictable periods of water deficit or excess in nonirrigated vineyards and eliminates competition from cover crops. We used undertrellis cover crops (UTCC) to limit vine water availability, reduce vine growth rate and final canopy size. However, to avoid excessive vine water stress due to the UTCC competition, irrigation was used during water deficit periods. This strategy was tested in combination with variable planting density to optimize vine vigor control in our environment over two growing seasons in southern Uruguay. Two factors were evaluated in a split-split plot experiment with five replicates. Treatments were: UTCC (full cover of the vineyard soil with tall fescue) versus conventional alleyway tall fescue with 1.0 m wide weed-free strip under the trellis, and two spacings between vines (0.8 vs. 1.5 m). Deficit drip irrigation was provided at mid-day stem water potential (SWP) thresholds of -0.9 MPa early and -1.1 MPa later in season. Shoot growth rate, SWP, berry size and berry composition (Brix, organic acids, total anthocyanin) were monitored over the season as well as final yield, cluster and pruning weights. Preliminary results showed that UTCC regulated vine vegetative growth and final canopy size, reduced berry size, cluster weight and bunch-rot incidence as well as increased tartaric/malic ratio, Brix and anthocyanin concentration in grapes. The combination of UTCC and 1.5 m inter-row spacing led to below-optimal shoot growth. The use of such multiple techniques shows promise for achieving vine balance in high-capacity conditions. © 2017 ISHS.
650 $aVID
653 $aBOTRYTIS BUNCH ROT
653 $aTANNAT
653 $aVETETATIVE GROWTH
700 1 $aFERRARI, V.
700 1 $aDISEGNA, E.
700 1 $aLAKSO, A.N.
700 1 $aGARCÍA PETILLO, M.
773 $tActa Horticulturae, 8 November 2017, 1177, p. 339-348.
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