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Registro completo
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Biblioteca (s) : |
INIA Treinta y Tres. |
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Fecha : |
18/09/2014 |
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Actualizado : |
15/05/2015 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Autor : |
ROEL, A.; HEILMAN, J.L.; MCCAULEY, G.N. |
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Afiliación : |
ALVARO ROEL DELLAZOPPA, Instituto Nacional de Investigación Agropecuaria (INIA), Uruguay. |
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Título : |
Water use and plant response in two rice irrigation methods. |
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Fecha de publicación : |
1999 |
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Fuente / Imprenta : |
Agricultural Water Management, 1999, v. 39, no. 1, p. 35-46. |
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ISSN : |
0378-3774 |
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DOI : |
10.1016/S0378-3774(98)00087-0 |
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Idioma : |
Inglés |
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Contenido : |
Abstract
Pin-Point (PP) irrigation is being used by rice producers in the southern US to suppress red rice (Oryza sativa), the major weed in rice production. In PP irrigation, germinated seed is dropped into the floodwater. After 24 h the field is drained, remains moist for 3 to 5 days, then reflooded until near harvest. Little is known about water use of the PP method in comparison to the conventional Flush-Flood (FF) method in which germinated seed is also dropped into the floodwater and the field is drained after 24 h, similar to PP, or the field is drill-seeded, flooded and drained, but permanent flood is delayed for 30 to 35 days. During this 30 to 35 days non-flood period, flushing (periodic irrigation) is used to maintain seedling contact with the soil and prevent water stress. Water use of PP and FF irrigated rice was studied during 1994 and 1995 growing seasons near Beaumont, TX. Three plots were subjected to the PP irrigation technique and three to the FF method. A flow meter measured irrigation water applied, and lysimeters measured evapotranspiration, transpiration, and evaporation. The FF method required an average of 113 mm more irrigation water than the PP method, due to flushing of FF plots during the non-flood period. Evapotranspiration (ET) was higher for PP plots during the period when FF plots were dry. During the flood period, ET in FF plots was higher than in PP plots in 1994, due to mainly a lower leaf area index and a more open canopy which led to greater evaporation from the water surface. No differences in ET were found in 1995. Stomatal conductance was lower in FF plots during the non-flood period, indicating some degree of water stress. Irrigation method did not affect yield, but the PP method reduced time to 100% heading by 5 to 7 days. These results suggest that the PP method can be useful not only to suppress red rice, but also to save water and produce an earlier maturing crop. Early maturity is particularly important in areas where ratoon cropping is practiced. MenosAbstract
Pin-Point (PP) irrigation is being used by rice producers in the southern US to suppress red rice (Oryza sativa), the major weed in rice production. In PP irrigation, germinated seed is dropped into the floodwater. After 24 h the field is drained, remains moist for 3 to 5 days, then reflooded until near harvest. Little is known about water use of the PP method in comparison to the conventional Flush-Flood (FF) method in which germinated seed is also dropped into the floodwater and the field is drained after 24 h, similar to PP, or the field is drill-seeded, flooded and drained, but permanent flood is delayed for 30 to 35 days. During this 30 to 35 days non-flood period, flushing (periodic irrigation) is used to maintain seedling contact with the soil and prevent water stress. Water use of PP and FF irrigated rice was studied during 1994 and 1995 growing seasons near Beaumont, TX. Three plots were subjected to the PP irrigation technique and three to the FF method. A flow meter measured irrigation water applied, and lysimeters measured evapotranspiration, transpiration, and evaporation. The FF method required an average of 113 mm more irrigation water than the PP method, due to flushing of FF plots during the non-flood period. Evapotranspiration (ET) was higher for PP plots during the period when FF plots were dry. During the flood period, ET in FF plots was higher than in PP plots in 1994, due to mainly a lower leaf area index and a more open canopy which led to gr... Presentar Todo |
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Palabras claves : |
EVAPORACION; EVAPOTRANSPIRACION; REQUERIMIENTOS DE AGUA; TRANSPIRACION. |
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Thesagro : |
ARROZ IRRIGADO. |
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Asunto categoría : |
F06 Riego |
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Marc : |
LEADER 02692naa a2200229 a 4500
001 1050382
005 2015-05-15
008 1999 bl uuuu u00u1 u #d
022 $a0378-3774
024 7 $a10.1016/S0378-3774(98)00087-0$2DOI
100 1 $aROEL, A.
245 $aWater use and plant response in two rice irrigation methods.$h[electronic resource]
260 $c1999
520 $aAbstract Pin-Point (PP) irrigation is being used by rice producers in the southern US to suppress red rice (Oryza sativa), the major weed in rice production. In PP irrigation, germinated seed is dropped into the floodwater. After 24 h the field is drained, remains moist for 3 to 5 days, then reflooded until near harvest. Little is known about water use of the PP method in comparison to the conventional Flush-Flood (FF) method in which germinated seed is also dropped into the floodwater and the field is drained after 24 h, similar to PP, or the field is drill-seeded, flooded and drained, but permanent flood is delayed for 30 to 35 days. During this 30 to 35 days non-flood period, flushing (periodic irrigation) is used to maintain seedling contact with the soil and prevent water stress. Water use of PP and FF irrigated rice was studied during 1994 and 1995 growing seasons near Beaumont, TX. Three plots were subjected to the PP irrigation technique and three to the FF method. A flow meter measured irrigation water applied, and lysimeters measured evapotranspiration, transpiration, and evaporation. The FF method required an average of 113 mm more irrigation water than the PP method, due to flushing of FF plots during the non-flood period. Evapotranspiration (ET) was higher for PP plots during the period when FF plots were dry. During the flood period, ET in FF plots was higher than in PP plots in 1994, due to mainly a lower leaf area index and a more open canopy which led to greater evaporation from the water surface. No differences in ET were found in 1995. Stomatal conductance was lower in FF plots during the non-flood period, indicating some degree of water stress. Irrigation method did not affect yield, but the PP method reduced time to 100% heading by 5 to 7 days. These results suggest that the PP method can be useful not only to suppress red rice, but also to save water and produce an earlier maturing crop. Early maturity is particularly important in areas where ratoon cropping is practiced.
650 $aARROZ IRRIGADO
653 $aEVAPORACION
653 $aEVAPOTRANSPIRACION
653 $aREQUERIMIENTOS DE AGUA
653 $aTRANSPIRACION
700 1 $aHEILMAN, J.L.
700 1 $aMCCAULEY, G.N.
773 $tAgricultural Water Management, 1999$gv. 39, no. 1, p. 35-46.
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INIA Treinta y Tres (TT) |
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Registro completo
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Biblioteca (s) : |
INIA Tacuarembó. |
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Fecha actual : |
19/08/2016 |
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Actualizado : |
19/08/2016 |
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Tipo de producción científica : |
Abstracts/Resúmenes |
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Autor : |
CANOZZI, M.E.A.; MEDEROS, A.; ZAGO, D.; PEREIRA, G.R.; BARCELLOS, J.O. |
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Afiliación : |
MARÍA EUGENIA ANDRIGHETTO CANOZZI, NESPRO/ UFRGS- Federal University of Rio Grande do Sul, Porto Alegre, Brazil.; AMERICA ESTHER MEDEROS SILVEIRA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; DANIELE ZAGO, NESPRO/ UFRGS- Federal University of Rio Grande do Sul, Porto Alegre, Brazil; G. R. PEREIRA, NESPRO/ UFRGS- Federal University of Rio Grande do Sul, Porto Alegre, Brazil.; JÚLIO OTÁVIO JARDIM BARCELLOS, NESPRO/ UFRGS- Federal University of Rio Grande do Sul, Porto Alegre, Brazil. |
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Título : |
A systematic review-meta-analysis of castration and welfare indicators in beef cattle. [Abstract]. |
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Fecha de publicación : |
2016 |
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Fuente / Imprenta : |
J. Anim. Sci Vol. 94, E-Suppl. 5/J. Dairy Sci. Vol. 99, E-Suppl. 1, 2016, 0086, p. 38. Conference, 2016 Joint Annual Meeting (JAM), At Salt Lake City, USA. |
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Idioma : |
Inglés |
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Contenido : |
To quantify the effects of castration in male beef cattle on welfare indicators based on cortisol concentration, average daily gain (ADG) and vocalization, a systematic review and meta-analysis were performed.We searched on five electronic databases (CAB Abstracts, ISI Web of Science, PubMed, Agricola and Scopus) from January 1900 to May 2015 and included conference proceedings and electronically contacted experts, as well as we checked references of relevant review papers. Inclusion criteria were complete studies using beef cattle until one yearof age undergoing castration that analysed cortisol level, ADG or vocalization.Data were extracted using pre-defined protocols. The included documents were written in English, Spanish, Portuguese or Italian.Random effect meta-analyses were conducted for each indicator separately with the mean of control and treated group. Possible influences of study characteristics and quality were assessed in meta-regression analyses.A total of 18 prospective publications reporting 23 studies and 156 trials were included in the MA involving 1,617animals.Significant between studies heterogeneity was observed for MA results when analysing cortisol and ADG.Regardless the control group and the castration technique, the comparison analyses showed no changes (P ? 0.05) on cortisol levels when castration was performed without drug administration.We found no evidence (P ? 0.05) for multi-modal therapyin decrease cortisol concentration 30 min after surgical procedure.Anaesthesia did not decrease cortisol level (MD = 0.411 nmol/L; P = 0.077; 95% CI: -0.868, 0.045) 120 min after surgical castration compared to castrated group without drug administration.Random-effect meta-analysis suggested an increase in ADG in surgical (MD = 0.231 g/d; P = 0.010; 95% CI: 0.056, 0.405) and non-surgical castration (MD = 0.883 g/d; P < 0.001; 95% CI: 0.313, 1.453) with no pain mitigation in comparison to uncastratedcattle.Publication bias was observed when cortisol was studied as an outcome, indicating that small size studies reporting non-significant effect were less likely to be published than similar studies with significant effect. In a meta-regression, only publication type contributed to the total variation (18.52%) when the outcome evaluated was ADG. The vocalization score presented data in a manner that was not suitable to MA. Our MA study demonstrates an inconclusive result to draw recommendations on preferred castration practices to minimize pain in beef cattle. MenosTo quantify the effects of castration in male beef cattle on welfare indicators based on cortisol concentration, average daily gain (ADG) and vocalization, a systematic review and meta-analysis were performed.We searched on five electronic databases (CAB Abstracts, ISI Web of Science, PubMed, Agricola and Scopus) from January 1900 to May 2015 and included conference proceedings and electronically contacted experts, as well as we checked references of relevant review papers. Inclusion criteria were complete studies using beef cattle until one yearof age undergoing castration that analysed cortisol level, ADG or vocalization.Data were extracted using pre-defined protocols. The included documents were written in English, Spanish, Portuguese or Italian.Random effect meta-analyses were conducted for each indicator separately with the mean of control and treated group. Possible influences of study characteristics and quality were assessed in meta-regression analyses.A total of 18 prospective publications reporting 23 studies and 156 trials were included in the MA involving 1,617animals.Significant between studies heterogeneity was observed for MA results when analysing cortisol and ADG.Regardless the control group and the castration technique, the comparison analyses showed no changes (P ? 0.05) on cortisol levels when castration was performed without drug administration.We found no evidence (P ? 0.05) for multi-modal therapyin decrease cortisol concentration 30 min after surgical... Presentar Todo |
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Palabras claves : |
CATTLE; CORTISOL; PAIN; VACALIZATION; WEIGHT. |
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Thesagro : |
BIENESTAR ANIMAL; CASTRACIÓN; GANADO VACUNO. |
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Asunto categoría : |
L01 Ganadería |
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URL : |
http://www.ainfo.inia.uy/digital/bitstream/item/5928/1/AMERICA-2016-JAM.pdf
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Marc : |
LEADER 03328nam a2200253 a 4500
001 1055311
005 2016-08-19
008 2016 bl uuuu u01u1 u #d
100 1 $aCANOZZI, M.E.A.
245 $aA systematic review-meta-analysis of castration and welfare indicators in beef cattle. [Abstract].$h[electronic resource]
260 $aJ. Anim. Sci Vol. 94, E-Suppl. 5/J. Dairy Sci. Vol. 99, E-Suppl. 1, 2016, 0086, p. 38. Conference, 2016 Joint Annual Meeting (JAM), At Salt Lake City, USA.$c2016
520 $aTo quantify the effects of castration in male beef cattle on welfare indicators based on cortisol concentration, average daily gain (ADG) and vocalization, a systematic review and meta-analysis were performed.We searched on five electronic databases (CAB Abstracts, ISI Web of Science, PubMed, Agricola and Scopus) from January 1900 to May 2015 and included conference proceedings and electronically contacted experts, as well as we checked references of relevant review papers. Inclusion criteria were complete studies using beef cattle until one yearof age undergoing castration that analysed cortisol level, ADG or vocalization.Data were extracted using pre-defined protocols. The included documents were written in English, Spanish, Portuguese or Italian.Random effect meta-analyses were conducted for each indicator separately with the mean of control and treated group. Possible influences of study characteristics and quality were assessed in meta-regression analyses.A total of 18 prospective publications reporting 23 studies and 156 trials were included in the MA involving 1,617animals.Significant between studies heterogeneity was observed for MA results when analysing cortisol and ADG.Regardless the control group and the castration technique, the comparison analyses showed no changes (P ? 0.05) on cortisol levels when castration was performed without drug administration.We found no evidence (P ? 0.05) for multi-modal therapyin decrease cortisol concentration 30 min after surgical procedure.Anaesthesia did not decrease cortisol level (MD = 0.411 nmol/L; P = 0.077; 95% CI: -0.868, 0.045) 120 min after surgical castration compared to castrated group without drug administration.Random-effect meta-analysis suggested an increase in ADG in surgical (MD = 0.231 g/d; P = 0.010; 95% CI: 0.056, 0.405) and non-surgical castration (MD = 0.883 g/d; P < 0.001; 95% CI: 0.313, 1.453) with no pain mitigation in comparison to uncastratedcattle.Publication bias was observed when cortisol was studied as an outcome, indicating that small size studies reporting non-significant effect were less likely to be published than similar studies with significant effect. In a meta-regression, only publication type contributed to the total variation (18.52%) when the outcome evaluated was ADG. The vocalization score presented data in a manner that was not suitable to MA. Our MA study demonstrates an inconclusive result to draw recommendations on preferred castration practices to minimize pain in beef cattle.
650 $aBIENESTAR ANIMAL
650 $aCASTRACIÓN
650 $aGANADO VACUNO
653 $aCATTLE
653 $aCORTISOL
653 $aPAIN
653 $aVACALIZATION
653 $aWEIGHT
700 1 $aMEDEROS, A.
700 1 $aZAGO, D.
700 1 $aPEREIRA, G.R.
700 1 $aBARCELLOS, J.O.
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