| |
|
|
 | Acceso al texto completo restringido a Biblioteca INIA Las Brujas. Por información adicional contacte bibliolb@inia.org.uy. |
|
Registro completo
|
|
Biblioteca (s) : |
INIA La Estanzuela; INIA Las Brujas. |
|
Fecha : |
15/09/2014 |
|
Actualizado : |
09/10/2019 |
|
Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
|
Autor : |
CARRASCO-LETELIER, L.; MENDOZA, Y.; BRANCHICCELA, M.B. |
|
Afiliación : |
LEONIDAS CARRASCO-LETELIER, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; YAMANDU MENDOZA SPINA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; MARÍA BELÉN BRANCHICCELA, MEC/ IIBCE (Instituto de Investigaciones de Ciencias Biológicas "Clemente Estable"). |
|
Título : |
Acute contact toxicity test of insecticides (Cipermetrina 25, Lorsban 48E, Thionex 35 on honeybees in the southwestern zone of Uruguay. |
|
Fecha de publicación : |
2012 |
|
Fuente / Imprenta : |
Chemosphere, 2012, v. 88, n. 4, p. 439-444 |
|
ISSN : |
0045-6535 |
|
DOI : |
10.1016/j.chemosphere.2012.02.062 |
|
Idioma : |
Inglés |
|
Notas : |
Article History: Received 18 August 2011// Revised 23 January 2012 // Accepted 17 February 2012 // Available online 20 March 2012. |
|
Contenido : |
ABSTRACT.
Glyphosate-resistant soybean cultivation is expanding rapidly in Uruguay, with its land area having increased by 95 times during the past 10 years. Because of the region?s Neotropical conditions, insecticide use is required to ensure adequate soybean productivity. However, in areas shared by soybean crops and beekeepers ? such as the southwestern zone of Uruguay (SWZU) ? the use of insecticides can increase the risks of honeybee death and honey contamination. Uruguayan commercial and legal guidelines set out practices and field doses designed to prevent acute intoxication with insecticides. However, honeybees in the SWZU are predominantly a polyhybrid subspecies different from that used to set international reference values, and hence they may have a different acute toxicity response, thus rendering such precautions ineffective. The aim of this work was to assess the acute toxicity response of polyhybrid honeybees in the SWZU to cypermethrin (commercial formulation: Cipermetrina 25 Agrin®), chlorpyrifos (commercial formulation: Lorsban 48E®), and endosulfan (commercial formulation: Thionex 35®). Acute toxicity bioassays were conducted to determine the median lethal dose (LD50) of each insecticide for the honeybees. The results indicate that, compared with EU reference values, SWZU honeybees have a higher toxicological sensitivity to chlorpyrifos and endosulfan, and a lower toxicological sensitivity to cypermethrin, based on the commercial formulations tested. However, when these results were adjusted according to their field dose equivalents, only chlorpyrifos emerged as a potential problem for beekeeping, as the maximum recommended field dose of Lorsban 48E® for soybean crops in Uruguay is 23 times the corresponding LD50 for honeybees in the SWZU. MenosABSTRACT.
Glyphosate-resistant soybean cultivation is expanding rapidly in Uruguay, with its land area having increased by 95 times during the past 10 years. Because of the region?s Neotropical conditions, insecticide use is required to ensure adequate soybean productivity. However, in areas shared by soybean crops and beekeepers ? such as the southwestern zone of Uruguay (SWZU) ? the use of insecticides can increase the risks of honeybee death and honey contamination. Uruguayan commercial and legal guidelines set out practices and field doses designed to prevent acute intoxication with insecticides. However, honeybees in the SWZU are predominantly a polyhybrid subspecies different from that used to set international reference values, and hence they may have a different acute toxicity response, thus rendering such precautions ineffective. The aim of this work was to assess the acute toxicity response of polyhybrid honeybees in the SWZU to cypermethrin (commercial formulation: Cipermetrina 25 Agrin®), chlorpyrifos (commercial formulation: Lorsban 48E®), and endosulfan (commercial formulation: Thionex 35®). Acute toxicity bioassays were conducted to determine the median lethal dose (LD50) of each insecticide for the honeybees. The results indicate that, compared with EU reference values, SWZU honeybees have a higher toxicological sensitivity to chlorpyrifos and endosulfan, and a lower toxicological sensitivity to cypermethrin, based on the commercial formulations tested. Howe... Presentar Todo |
|
Palabras claves : |
APICULTURA; CHLORPYRIFOS; CYPERMETHRIN; ECOTOXICOLOGÍA; ENDOSULFAN; HONEYBEES; INSECTICIDE; LD50; PESTICIDAS; QUÍMICA AMBIENTAL. |
|
Thesagro : |
APICULTURA. |
|
Asunto categoría : |
T01 Polución |
|
Marc : |
LEADER 02825naa a2200313 a 4500
001 1013165
005 2019-10-09
008 2012 bl uuuu u00u1 u #d
022 $a0045-6535
024 7 $a10.1016/j.chemosphere.2012.02.062$2DOI
100 1 $aCARRASCO-LETELIER, L.
245 $aAcute contact toxicity test of insecticides (Cipermetrina 25, Lorsban 48E, Thionex 35 on honeybees in the southwestern zone of Uruguay.$h[electronic resource]
260 $c2012
500 $aArticle History: Received 18 August 2011// Revised 23 January 2012 // Accepted 17 February 2012 // Available online 20 March 2012.
520 $aABSTRACT. Glyphosate-resistant soybean cultivation is expanding rapidly in Uruguay, with its land area having increased by 95 times during the past 10 years. Because of the region?s Neotropical conditions, insecticide use is required to ensure adequate soybean productivity. However, in areas shared by soybean crops and beekeepers ? such as the southwestern zone of Uruguay (SWZU) ? the use of insecticides can increase the risks of honeybee death and honey contamination. Uruguayan commercial and legal guidelines set out practices and field doses designed to prevent acute intoxication with insecticides. However, honeybees in the SWZU are predominantly a polyhybrid subspecies different from that used to set international reference values, and hence they may have a different acute toxicity response, thus rendering such precautions ineffective. The aim of this work was to assess the acute toxicity response of polyhybrid honeybees in the SWZU to cypermethrin (commercial formulation: Cipermetrina 25 Agrin®), chlorpyrifos (commercial formulation: Lorsban 48E®), and endosulfan (commercial formulation: Thionex 35®). Acute toxicity bioassays were conducted to determine the median lethal dose (LD50) of each insecticide for the honeybees. The results indicate that, compared with EU reference values, SWZU honeybees have a higher toxicological sensitivity to chlorpyrifos and endosulfan, and a lower toxicological sensitivity to cypermethrin, based on the commercial formulations tested. However, when these results were adjusted according to their field dose equivalents, only chlorpyrifos emerged as a potential problem for beekeeping, as the maximum recommended field dose of Lorsban 48E® for soybean crops in Uruguay is 23 times the corresponding LD50 for honeybees in the SWZU.
650 $aAPICULTURA
653 $aAPICULTURA
653 $aCHLORPYRIFOS
653 $aCYPERMETHRIN
653 $aECOTOXICOLOGÍA
653 $aENDOSULFAN
653 $aHONEYBEES
653 $aINSECTICIDE
653 $aLD50
653 $aPESTICIDAS
653 $aQUÍMICA AMBIENTAL
700 1 $aMENDOZA, Y.
700 1 $aBRANCHICCELA, M.B.
773 $tChemosphere, 2012$gv. 88, n. 4, p. 439-444
Descargar
Esconder MarcPresentar Marc Completo |
|
Registro original : |
INIA Las Brujas (LB) |
|
|
Biblioteca
|
Identificación
|
Origen
|
Tipo / Formato
|
Clasificación
|
Cutter
|
Registro
|
Volumen
|
Estado
|
Volver
|
|
|
| Acceso al texto completo restringido a Biblioteca INIA La Estanzuela. Por información adicional contacte bib_le@inia.org.uy. |
|
Registro completo
|
|
Biblioteca (s) : |
INIA La Estanzuela. |
|
Fecha actual : |
30/05/2019 |
|
Actualizado : |
10/06/2019 |
|
Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
|
Circulación / Nivel : |
Internacional - -- |
|
Autor : |
ZAGO, D; CANOZZI, M.E.A.; BARCELLOS, J.O,J. |
|
Afiliación : |
Department of Animal Science, Federal University of Rio Grande do Sul. Av. Bento Gonçalves n. 7712, 91540-000, Porto Alegre, RS, Brazil.; MARÍA EUGENIA ANDRIGHETTO CANOZZI, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; JULIO BARCELLOS, Department of Animal Science, Federal University of Rio Grande do Sul. Av. Bento Gonçalves n. 7712, 91540-000, Porto Alegre, RS, Brazil. |
|
Título : |
Pregnant cow nutrition and its effects on foetal weight-a meta-analysis. |
|
Fecha de publicación : |
2019 |
|
Fuente / Imprenta : |
The Journal of Agricultural Science,Volume 157, Issue 1, January 2019 , pp. 83-95. |
|
DOI : |
10.1017/S0021859619000315 |
|
Idioma : |
Inglés |
|
Notas : |
Article history: Received: 5 December 2018//Revised: 5 March 2019//Accepted: 3 April 2019//First published online: 9 May 2019. |
|
Contenido : |
Abstract:The prenatal development of cattle has influence on productive performance throughout postnatal life. The number of muscle and fat cells that the animal will have throughout its life is determined in the foetal stage and is influenced by nutrition of the pregnant cow. A systematic review and meta-analysis was performed to evaluate the effect of different energy levels (total digestible nutrient, TDN) and crude protein (CP) supplied to pregnant cows on foetal weight at 4 (FW4) and 8 months (FW8) and calf birth weight (CBW). Four studies and six trials involving 170 animals were assessed for FW4; four studies, four trials and 156 animals for FW8 and 48 studies, 125 trials and 9053 animals for CBW. High heterogeneity across studies was presented in FW4 (I2 = 94.4%), FW8 (I2 = 91.08%) and CBW (I2 = 96.9%). Dietary TDN and CP levels did not influence FW4. The FW8 was reduced by 2.24 kg when cows were fed 100% of their CP and TDN requirements (I2 = 0%), relative to those fed 70% of their requirements during the first and second trimesters. The CBW was reduced by 0.45 kg (I2 = 96.9%) when cows were fed 130% of their CP requirements relative to other dietary CP levels. When cows were fed 140% of their TDN requirements, CBW decreased by 2.71 kg (I2 = 98.3%) relative to other TDN levels. Dietary energy or CP levels fed above the requirements to pregnant cows restrict foetal development and CBW. |
|
Palabras claves : |
BEEF CATTLE; BIRTH WEIGHT; COW-CALF HERD; FOETAL PROGRAMMING; FOETAL WEIGHT; PESO FETAL; VACA PREÑADA. |
|
Thesagro : |
NUTRICIÓN ANIMAL. |
|
Asunto categoría : |
L51 Fisiología Animal - Nutrición |
|
Marc : |
LEADER 02310naa a2200265 a 4500
001 1059794
005 2019-06-10
008 2019 bl uuuu u00u1 u #d
024 7 $a10.1017/S0021859619000315$2DOI
100 1 $aZAGO, D
245 $aPregnant cow nutrition and its effects on foetal weight-a meta-analysis.$h[electronic resource]
260 $c2019
500 $aArticle history: Received: 5 December 2018//Revised: 5 March 2019//Accepted: 3 April 2019//First published online: 9 May 2019.
520 $aAbstract:The prenatal development of cattle has influence on productive performance throughout postnatal life. The number of muscle and fat cells that the animal will have throughout its life is determined in the foetal stage and is influenced by nutrition of the pregnant cow. A systematic review and meta-analysis was performed to evaluate the effect of different energy levels (total digestible nutrient, TDN) and crude protein (CP) supplied to pregnant cows on foetal weight at 4 (FW4) and 8 months (FW8) and calf birth weight (CBW). Four studies and six trials involving 170 animals were assessed for FW4; four studies, four trials and 156 animals for FW8 and 48 studies, 125 trials and 9053 animals for CBW. High heterogeneity across studies was presented in FW4 (I2 = 94.4%), FW8 (I2 = 91.08%) and CBW (I2 = 96.9%). Dietary TDN and CP levels did not influence FW4. The FW8 was reduced by 2.24 kg when cows were fed 100% of their CP and TDN requirements (I2 = 0%), relative to those fed 70% of their requirements during the first and second trimesters. The CBW was reduced by 0.45 kg (I2 = 96.9%) when cows were fed 130% of their CP requirements relative to other dietary CP levels. When cows were fed 140% of their TDN requirements, CBW decreased by 2.71 kg (I2 = 98.3%) relative to other TDN levels. Dietary energy or CP levels fed above the requirements to pregnant cows restrict foetal development and CBW.
650 $aNUTRICIÓN ANIMAL
653 $aBEEF CATTLE
653 $aBIRTH WEIGHT
653 $aCOW-CALF HERD
653 $aFOETAL PROGRAMMING
653 $aFOETAL WEIGHT
653 $aPESO FETAL
653 $aVACA PREÑADA
700 1 $aCANOZZI, M.E.A.
700 1 $aBARCELLOS, J.O,J.
773 $tThe Journal of Agricultural Science,Volume 157, Issue 1, January 2019 , pp. 83-95.
Descargar
Esconder MarcPresentar Marc Completo |
|
Registro original : |
INIA La Estanzuela (LE) |
|
|
Biblioteca
|
Identificación
|
Origen
|
Tipo / Formato
|
Clasificación
|
Cutter
|
Registro
|
Volumen
|
Estado
|
Volver
|
| Expresión de búsqueda válido. Check! |
|
|
