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 | Acceso al texto completo restringido a Biblioteca INIA Treinta y Tres. Por información adicional contacte bibliott@inia.org.uy. |
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Registro completo
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Biblioteca (s) : |
INIA Treinta y Tres. |
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Fecha : |
12/09/2014 |
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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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Autor : |
FIOL, C.; QUINTANS, G.; UNGERFELD, R. |
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Afiliación : |
GRACIELA QUINTANS ILARIA, Instituto Nacional de Investigación Agropecuaria (INIA), Uruguay. |
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Título : |
Response to biostimulation in peri-puberal beef heifers: Influence of male-female proximity and heifer's initial body weight. |
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Fecha de publicación : |
2010 |
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Fuente / Imprenta : |
Theriogenology, 2010, v. 74, no.4, p. 569-575. |
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ISSN : |
0093-691X |
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DOI : |
10.1016/j.theriogenology.2010.03.015 |
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Idioma : |
Inglés |
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Notas : |
Article history: Received 9 July 2009; received in revised form 23 December 2009; accepted 17 March 2010. |
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Contenido : |
Abstract:
The objectives were to determine if exposure of 12 mo old peri-puberal beef heifers to androgenized steers for 35 d hastened puberty, and if the response was related to the physical proximity between males and females and to heifer?s initial body weight.
Hereford x Aberdeen Angus heifers (n = 131), 12 mo old, were assigned to two treatments: 1) Exposed group, exposed to androgenized steers from Day 0 to Day 35 (E, n = 66); or 2) Control group, isolated from the steers and other males (C, n = 65). Cyclic activity was determined through estrous behavior detection (twice daily) and weekly ultrasound imaging to detect a CL.
For each Exposed heifer, an association index (with males) was determined thrice weekly, based on the distance to androgenized steers every 10 min for 4 h (until cyclic activity began). Data were analyzed according to heifer?s initial body weight, which was categorized into three ranges (low, medium, and high, designated LW, MW, and HW, respectively). The cumulative proportion of cyclic heifers was greater for Exposed than Control heifers as of Day 21. By the end of the exposure period, more Exposed than Control heifers had attained puberty (16/66 vs. 2/65; P 0.001). Within the HW classification, more Exposed than Control heifers became puberal (11/20 vs. 2/21; P = 0.002). However, there were no differences between MW and LW in the proportions of heifers that reached puberty. Association index in Exposed heifers was greater in HW than in MW and LW (0.10 0.09 vs.
0.06 0.03 and 0.06 0.04; P 0.05), and in heifers that began cyclic activity compared to those that did not in the MW heifers (0.09 0.05 vs. 0.05 0.02; P = 0.01) and tended to be different in the HW treatment (0.12 0.10 vs. 0.06 0.02; P = 0.09).
In conclusion, exposure of peri-puberal beef heifers to androgenized steers for 35 d advanced puberty in heavier heifers; an earlier response occurred in heifers with greater proximity to androgenized steers. MenosAbstract:
The objectives were to determine if exposure of 12 mo old peri-puberal beef heifers to androgenized steers for 35 d hastened puberty, and if the response was related to the physical proximity between males and females and to heifer?s initial body weight.
Hereford x Aberdeen Angus heifers (n = 131), 12 mo old, were assigned to two treatments: 1) Exposed group, exposed to androgenized steers from Day 0 to Day 35 (E, n = 66); or 2) Control group, isolated from the steers and other males (C, n = 65). Cyclic activity was determined through estrous behavior detection (twice daily) and weekly ultrasound imaging to detect a CL.
For each Exposed heifer, an association index (with males) was determined thrice weekly, based on the distance to androgenized steers every 10 min for 4 h (until cyclic activity began). Data were analyzed according to heifer?s initial body weight, which was categorized into three ranges (low, medium, and high, designated LW, MW, and HW, respectively). The cumulative proportion of cyclic heifers was greater for Exposed than Control heifers as of Day 21. By the end of the exposure period, more Exposed than Control heifers had attained puberty (16/66 vs. 2/65; P 0.001). Within the HW classification, more Exposed than Control heifers became puberal (11/20 vs. 2/21; P = 0.002). However, there were no differences between MW and LW in the proportions of heifers that reached puberty. Association index in Exposed heifers was greater in HW than in MW and LW... Presentar Todo |
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Palabras claves : |
BEEF HEIFERS; BIOSTIMULATION; MALE EFFECT; PUBERTY; SOCIO-SEXUAL STIMULUS. |
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Thesagro : |
BOVINOS; CONDICION CORPORAL; ENTORE; TERNERAS. |
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Asunto categoría : |
L53 Fisiología Animal - Reproducción |
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Marc : |
LEADER 02912naa a2200289 a 4500
001 1050175
005 2019-10-11
008 2010 bl uuuu u00u1 u #d
022 $a0093-691X
024 7 $a10.1016/j.theriogenology.2010.03.015$2DOI
100 1 $aFIOL, C.
245 $aResponse to biostimulation in peri-puberal beef heifers$bInfluence of male-female proximity and heifer's initial body weight.$h[electronic resource]
260 $c2010
500 $aArticle history: Received 9 July 2009; received in revised form 23 December 2009; accepted 17 March 2010.
520 $aAbstract: The objectives were to determine if exposure of 12 mo old peri-puberal beef heifers to androgenized steers for 35 d hastened puberty, and if the response was related to the physical proximity between males and females and to heifer?s initial body weight. Hereford x Aberdeen Angus heifers (n = 131), 12 mo old, were assigned to two treatments: 1) Exposed group, exposed to androgenized steers from Day 0 to Day 35 (E, n = 66); or 2) Control group, isolated from the steers and other males (C, n = 65). Cyclic activity was determined through estrous behavior detection (twice daily) and weekly ultrasound imaging to detect a CL. For each Exposed heifer, an association index (with males) was determined thrice weekly, based on the distance to androgenized steers every 10 min for 4 h (until cyclic activity began). Data were analyzed according to heifer?s initial body weight, which was categorized into three ranges (low, medium, and high, designated LW, MW, and HW, respectively). The cumulative proportion of cyclic heifers was greater for Exposed than Control heifers as of Day 21. By the end of the exposure period, more Exposed than Control heifers had attained puberty (16/66 vs. 2/65; P 0.001). Within the HW classification, more Exposed than Control heifers became puberal (11/20 vs. 2/21; P = 0.002). However, there were no differences between MW and LW in the proportions of heifers that reached puberty. Association index in Exposed heifers was greater in HW than in MW and LW (0.10 0.09 vs. 0.06 0.03 and 0.06 0.04; P 0.05), and in heifers that began cyclic activity compared to those that did not in the MW heifers (0.09 0.05 vs. 0.05 0.02; P = 0.01) and tended to be different in the HW treatment (0.12 0.10 vs. 0.06 0.02; P = 0.09). In conclusion, exposure of peri-puberal beef heifers to androgenized steers for 35 d advanced puberty in heavier heifers; an earlier response occurred in heifers with greater proximity to androgenized steers.
650 $aBOVINOS
650 $aCONDICION CORPORAL
650 $aENTORE
650 $aTERNERAS
653 $aBEEF HEIFERS
653 $aBIOSTIMULATION
653 $aMALE EFFECT
653 $aPUBERTY
653 $aSOCIO-SEXUAL STIMULUS
700 1 $aQUINTANS, G.
700 1 $aUNGERFELD, R.
773 $tTheriogenology, 2010$gv. 74, no.4, p. 569-575.
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Registro original : |
INIA Treinta y Tres (TT) |
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| Acceso al texto completo restringido a Biblioteca INIA La Estanzuela. Por información adicional contacte bib_le@inia.org.uy. |
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Registro completo
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Biblioteca (s) : |
INIA La Estanzuela. |
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Fecha actual : |
07/04/2021 |
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Actualizado : |
07/04/2021 |
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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 : |
BUSTAMANTE-SILVEIRA, M.; SIRI-PRIETO, G.; CARRASCO-LETELIER, L. |
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Afiliación : |
MAURICIO BUSTAMANTE-SILVEIRA, Estación Experimental Mario Cassinoni (EEMAC), Facultad de Agronomía, Universidad de la República, Ruta 3 km 363, Paysandú, Uruguay.; GUILLERMO SIRI-PRIETO, stación Experimental Mario Cassinoni (EEMAC), Facultad de Agronomía, Universidad de la República, Ruta 3 km 363, Paysandú, Uruguay; LEONIDAS CARRASCO-LETELIER, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
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Título : |
Water footprints of bioethanol cropping systems in Uruguay, |
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Fecha de publicación : |
2021 |
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Fuente / Imprenta : |
Agricultural Water Management, 30 June 2021, Volume 252, Article 106870. Doi: https://doi.org/10.1016/j.agwat.2021.106870 |
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DOI : |
10.1016/j.agwat.2021.106870 |
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Idioma : |
Inglés |
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Notas : |
Article history: Received 4 June 2020/ Revised 10 March 2021/ Accepted 13 March 2021/ Available online 5 April 2021. Corresponding author:
E-mail address: bustamantefagro@gmail.com (M. Bustamante-Silveira). |
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Contenido : |
ABSTRACT: Bioenergy is the most widely used type of renewable energy. However, an assessment of water consumption and
pollution is necessary to determine the water demand of this energy source. The Uruguayan public policy to decarbonize energy sources highlighted the use of bioenergy. In this regard, we analyzed the water footprint (WF) of four bioethanol cropping systems: (1) maize-wheat-sorghum rotation without harvested crop residues (MWS), (2) maize-wheat-sorghum rotation with harvested crop residues (MWS-R), (3) continuous sweet sorghum (Ss), and (4) switchgrass (Sw). In order to assess the WF of bioethanol production, green (WFgreen) and gray
(WFgray) components of crop production were calculated by considering the different volumes of water involved
in evaporation, rainfall, and fertilizer pollution. Annual cropping systems (i.e., MWS, MWS-R, Ss) had the largest
WFs (23.1?30.9 m3 L? 1 ethanol). Switchgrass had the lowest values per hectare and per liter of ethanol
(12,735 m3 (ha yr)? 1 and 3.8 m3 L? 1 ethanol, respectively). The volume required to assimilate phosphorous (P) and
nitrogen (N) fertilizers played a significant role in bioethanol cropping systems. In annual systems, WFgray was
the main fraction (87%) of total WF (WFT). Averaged across all cropping systems, WFgray related to P was 13
times larger than WFgray related to N. |
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Palabras claves : |
BIOENERGY; GRAY WATER; GREEN WATER; HUELLA HIDRICA; INTESIFICATION; SOIL EROSION. |
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Thesagro : |
ENERGIA RENOVABLE. |
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Asunto categoría : |
-- |
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Marc : |
LEADER 02354naa a2200253 a 4500
001 1061959
005 2021-04-07
008 2021 bl uuuu u00u1 u #d
024 7 $a10.1016/j.agwat.2021.106870$2DOI
100 1 $aBUSTAMANTE-SILVEIRA, M.
245 $aWater footprints of bioethanol cropping systems in Uruguay,$h[electronic resource]
260 $c2021
500 $aArticle history: Received 4 June 2020/ Revised 10 March 2021/ Accepted 13 March 2021/ Available online 5 April 2021. Corresponding author: E-mail address: bustamantefagro@gmail.com (M. Bustamante-Silveira).
520 $aABSTRACT: Bioenergy is the most widely used type of renewable energy. However, an assessment of water consumption and pollution is necessary to determine the water demand of this energy source. The Uruguayan public policy to decarbonize energy sources highlighted the use of bioenergy. In this regard, we analyzed the water footprint (WF) of four bioethanol cropping systems: (1) maize-wheat-sorghum rotation without harvested crop residues (MWS), (2) maize-wheat-sorghum rotation with harvested crop residues (MWS-R), (3) continuous sweet sorghum (Ss), and (4) switchgrass (Sw). In order to assess the WF of bioethanol production, green (WFgreen) and gray (WFgray) components of crop production were calculated by considering the different volumes of water involved in evaporation, rainfall, and fertilizer pollution. Annual cropping systems (i.e., MWS, MWS-R, Ss) had the largest WFs (23.1?30.9 m3 L? 1 ethanol). Switchgrass had the lowest values per hectare and per liter of ethanol (12,735 m3 (ha yr)? 1 and 3.8 m3 L? 1 ethanol, respectively). The volume required to assimilate phosphorous (P) and nitrogen (N) fertilizers played a significant role in bioethanol cropping systems. In annual systems, WFgray was the main fraction (87%) of total WF (WFT). Averaged across all cropping systems, WFgray related to P was 13 times larger than WFgray related to N.
650 $aENERGIA RENOVABLE
653 $aBIOENERGY
653 $aGRAY WATER
653 $aGREEN WATER
653 $aHUELLA HIDRICA
653 $aINTESIFICATION
653 $aSOIL EROSION
700 1 $aSIRI-PRIETO, G.
700 1 $aCARRASCO-LETELIER, L.
773 $tAgricultural Water Management, 30 June 2021, Volume 252, Article 106870. Doi: https://doi.org/10.1016/j.agwat.2021.106870
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