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Registro completo
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Biblioteca (s) : |
INIA La Estanzuela. |
Fecha : |
23/03/2018 |
Actualizado : |
09/10/2019 |
Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
Autor : |
OLINDA, R. G.; MAIA, L. A.; FRADE, M. T. S.; SOARES, M. P.; BARROS, S. S.; DRIEMEIER, D.; RIET-CORREA, F.; DANTAS, A. F. M. |
Afiliación : |
Programa de Pós-graduação em Medicina Veterinária, Hospital Veterinário, Centro de Saúde e Tecnologia Rural, Universidade Federal de Campina Grande (UFCG); Programa de Pós-graduação em Medicina Veterinária, Hospital Veterinário, Centro de Saúde e Tecnologia Rural, Universidade Federal de Campina Grande (UFCG); Programa de Pós-graduação em Medicina Veterinária, Hospital Veterinário, Centro de Saúde e Tecnologia Rural, Universidade Federal de Campina Grande (UFCG); Laboratório Regional de Diagnóstico, Faculdade de Veterinária (FV), Universidade Federal de Pelotas (UFPel); Laboratório Regional de Diagnóstico, Faculdade de Veterinária (FV), Universidade Federal de Pelotas (UFPel); Departamento de Patologia Clínica Veterinária, Faculdade de Veteriná- ria, Universidade Federal do Rio Grande do Sul (UFRGS),; FRANKLIN RIET-CORREA AMARAL, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; Programa de Pós-graduação em Medicina Veterinária, Hospital Veterinário, Centro de Saúde e Tecnologia Rural, Universidade Federal de Campina Grande (UFCG); Programa de Pós-graduação em Medicina Veterinária, Hospital Veterinário, Centro de Saúde e Tecnologia Rural, Universidade Federal de Campina Grande (UFCG). |
Título : |
Degenerative axonopathy associated with copper deficiency in pigs. (Axonopatia degenerativa associada com deficiência de cobre em suínos). |
Fecha de publicación : |
2017 |
Fuente / Imprenta : |
Pesquisa Veterinária Brasileira, Rio de Janeiro v. 37, n. 9, p. 911-915, setembro. 2017. |
DOI : |
10.1590/S0100-736X2017000900002 |
Idioma : |
Inglés |
Notas : |
Article history: 1 Received on May 29, 2016 // Accepted for publication on November 11, 2016. |
Contenido : |
Abstract: The epidemiological, clinic and morphological (pathological and ultrastructural) aspects of four outbreaks of copper deficiency affecting 21- to 90-day-old pigs in the Northeast region of Brazil are reported. Clinical signs began with paraparesis and ataxia and progressed to flaccid or spastic paralysis of the pelvic and thoracic limbs, followed by sternal and/or lateral recumbence. In addition, some animals showed dog-sitting position and intention tremors. The clinical manifestation period was 5-20 days. Significant gross lesions were not observed; however, microscopically, symmetrical degeneration of the white matter with ballooned myelin sheaths containing occasional macrophages was observed, mainly in the spinal cord. Two pigs presented with necrosis ad loss of Purkinje cells and ectopic Purkinje cells in the granular layer and cerebellar white matter. A ultrastructural analysis showed different degrees of damage of myelinated axons in the spinal segments, including an absence of the axoplasm structures with only axonal residues remaining. The myelin sheaths were degenerated and often collapsed into the space previously occupied by the axon. These results suggest that myelin degeneration is secondary to the axonal lesion. Finally, the concentration of copper in the liver was determined using atomic absorption spectrophotometry and was found to be low (ranging from 2.2 to 10.8 ppm). In conclusion, in the Brazilian semiarid region, Cu deficiency occurs in 21 to 90-day-old pigs that ingested different types of waste in their food. MenosAbstract: The epidemiological, clinic and morphological (pathological and ultrastructural) aspects of four outbreaks of copper deficiency affecting 21- to 90-day-old pigs in the Northeast region of Brazil are reported. Clinical signs began with paraparesis and ataxia and progressed to flaccid or spastic paralysis of the pelvic and thoracic limbs, followed by sternal and/or lateral recumbence. In addition, some animals showed dog-sitting position and intention tremors. The clinical manifestation period was 5-20 days. Significant gross lesions were not observed; however, microscopically, symmetrical degeneration of the white matter with ballooned myelin sheaths containing occasional macrophages was observed, mainly in the spinal cord. Two pigs presented with necrosis ad loss of Purkinje cells and ectopic Purkinje cells in the granular layer and cerebellar white matter. A ultrastructural analysis showed different degrees of damage of myelinated axons in the spinal segments, including an absence of the axoplasm structures with only axonal residues remaining. The myelin sheaths were degenerated and often collapsed into the space previously occupied by the axon. These results suggest that myelin degeneration is secondary to the axonal lesion. Finally, the concentration of copper in the liver was determined using atomic absorption spectrophotometry and was found to be low (ranging from 2.2 to 10.8 ppm). In conclusion, in the Brazilian semiarid region, Cu deficiency occurs in 21 to ... Presentar Todo |
Palabras claves : |
Axonal degeneration; COPPER DEFICIENCY; DEFICIENCIA DE COBRE; Degeneração axonal; Degeneração da mielina; Degenerative myelopathy; Mielopatia; MINERAL DEFICIENCY; Myelin degeneration; PLATAFORMA SALUD ANIMAL; SWINE. |
Thesagro : |
DEFICIENCIAS DE MINERALES; ENFERMEDADES DE LOS ANIMALES; SUINOS. |
Asunto categoría : |
E16 Enfermedades de los animales |
URL : |
http://www.ainfo.inia.uy/digital/bitstream/item/8985/1/Pesq.-Vet.-Bras.-379-911-915-setembro-2017-Olinda.pdf
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Marc : |
LEADER 02918naa a2200397 a 4500 001 1058315 005 2019-10-09 008 2017 bl uuuu u00u1 u #d 024 7 $a10.1590/S0100-736X2017000900002$2DOI 100 1 $aOLINDA, R. G. 245 $aDegenerative axonopathy associated with copper deficiency in pigs. (Axonopatia degenerativa associada com deficiência de cobre em suínos).$h[electronic resource] 260 $c2017 500 $aArticle history: 1 Received on May 29, 2016 // Accepted for publication on November 11, 2016. 520 $aAbstract: The epidemiological, clinic and morphological (pathological and ultrastructural) aspects of four outbreaks of copper deficiency affecting 21- to 90-day-old pigs in the Northeast region of Brazil are reported. Clinical signs began with paraparesis and ataxia and progressed to flaccid or spastic paralysis of the pelvic and thoracic limbs, followed by sternal and/or lateral recumbence. In addition, some animals showed dog-sitting position and intention tremors. The clinical manifestation period was 5-20 days. Significant gross lesions were not observed; however, microscopically, symmetrical degeneration of the white matter with ballooned myelin sheaths containing occasional macrophages was observed, mainly in the spinal cord. Two pigs presented with necrosis ad loss of Purkinje cells and ectopic Purkinje cells in the granular layer and cerebellar white matter. A ultrastructural analysis showed different degrees of damage of myelinated axons in the spinal segments, including an absence of the axoplasm structures with only axonal residues remaining. The myelin sheaths were degenerated and often collapsed into the space previously occupied by the axon. These results suggest that myelin degeneration is secondary to the axonal lesion. Finally, the concentration of copper in the liver was determined using atomic absorption spectrophotometry and was found to be low (ranging from 2.2 to 10.8 ppm). In conclusion, in the Brazilian semiarid region, Cu deficiency occurs in 21 to 90-day-old pigs that ingested different types of waste in their food. 650 $aDEFICIENCIAS DE MINERALES 650 $aENFERMEDADES DE LOS ANIMALES 650 $aSUINOS 653 $aAxonal degeneration 653 $aCOPPER DEFICIENCY 653 $aDEFICIENCIA DE COBRE 653 $aDegeneração axonal 653 $aDegeneração da mielina 653 $aDegenerative myelopathy 653 $aMielopatia 653 $aMINERAL DEFICIENCY 653 $aMyelin degeneration 653 $aPLATAFORMA SALUD ANIMAL 653 $aSWINE 700 1 $aMAIA, L. A. 700 1 $aFRADE, M. T. S. 700 1 $aSOARES, M. P. 700 1 $aBARROS, S. S. 700 1 $aDRIEMEIER, D. 700 1 $aRIET-CORREA, F. 700 1 $aDANTAS, A. F. M. 773 $tPesquisa Veterinária Brasileira, Rio de Janeiro$gv. 37, n. 9, p. 911-915, setembro. 2017.
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INIA La Estanzuela (LE) |
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Registro completo
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Biblioteca (s) : |
INIA Treinta y Tres. |
Fecha actual : |
13/04/2022 |
Actualizado : |
17/05/2022 |
Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
Circulación / Nivel : |
Internacional - -- |
Autor : |
PEREIRA MORA, L.; TERRA, J.A.; FERNÁNDEZ SCAVINO, A. |
Afiliación : |
LUCIANA PEREIRA MORA, Area Microbiología, Departamento de Biociencias, Facultad de Química, Universidad de la República, Montevideo, Uruguay.; JOSÉ ALFREDO TERRA FERNÁNDEZ, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; ANA FERNÁNDEZ SCAVINO, Area Microbiología, Departamento de Biociencias, Facultad de Química, Universidad de la República, Montevideo, Uruguay. |
Título : |
Methanogenic community linked to organic acids fermentation from root exudates are affected by rice intensification in rotational soil systems. |
Fecha de publicación : |
2022 |
Fuente / Imprenta : |
Applied Soil Ecology, 2022, volume 176, artículo 104498. OPEN ACCESS. doi: https://doi.org/10.1016/j.apsoil.2022.104498 |
Páginas : |
9 p. |
DOI : |
10.1016/j.apsoil.2022.104498 |
Idioma : |
Inglés |
Notas : |
History Article: Received 30 December 2021; Received in revised form 1 April 2022; Accepted 4 April 2022; Available online 13 April 2022.
Corresponding author: afernand@fq.edu.uy (A. Fernandez-Scavino). |
Contenido : |
Rice paddy soils are an important biogenic source of methane, a relevant greenhouse gas. Rice rotation with upland crops and pastures affects hydrolytic and fermentative bacteria and methanogenic archaea by sequential exposition to oxic and anoxic conditions. There are several ways to reduce methane emissions from rice paddy soils. Here we examine the effect of intensification in rice rotations with upland crops upon the microbial community structure and methanogenesis when dicarboxylic acids exudated by rice root were amended in microcosms assays. Soils under rotations rice-pasture, rice-soybean and continuous rice, with the last two more intensive systems recently installed in the field experiment, were sampled. Amplicon sequencing of 16S rRNA gene analysis showed that the rotation system was a main driver of the microbial community structure, explaining 33%, 38% and 55% of the differences in the structure of Bacteria, Archaea and methanogens,
respectively. The density of mcrA gene copies was significantly higher in continuous rice soil than in other soils, and the relative abundance of methanogenic archaea was 33% for rice monoculture, whereas represented 15% and 14% for the rice-pasture and rice-soybean soils, respectively. The incubation of soils with tartrate and
succinate confirmed functional differences among soils since rice monoculture showed similar or higher methane production and significantly less acetate and propionate accumulation than other soils. The T-RFLP analysis of mcrA gene in soils and incubated soils revealed that Rice Cluster I increased after incubation in all rotational soils, whereas Methanosarcinaceae and Methanobacteriaceae remained relevant after incubation. Furthermore, a more stable community of methanogenic archaea was established in soil under continuous rice, since T-RF profiles of soils and incubated soils with dicarboxylic acids grouped together with 62% similarity, while communities from other rotational soils experimented a great shift after incubation with these substrates. Altogether, these results showed that the conversion of rice-pasture rotational fields to a more intensive rice crop production strongly impacts the methanogenic community structure and their potential for methane emission. MenosRice paddy soils are an important biogenic source of methane, a relevant greenhouse gas. Rice rotation with upland crops and pastures affects hydrolytic and fermentative bacteria and methanogenic archaea by sequential exposition to oxic and anoxic conditions. There are several ways to reduce methane emissions from rice paddy soils. Here we examine the effect of intensification in rice rotations with upland crops upon the microbial community structure and methanogenesis when dicarboxylic acids exudated by rice root were amended in microcosms assays. Soils under rotations rice-pasture, rice-soybean and continuous rice, with the last two more intensive systems recently installed in the field experiment, were sampled. Amplicon sequencing of 16S rRNA gene analysis showed that the rotation system was a main driver of the microbial community structure, explaining 33%, 38% and 55% of the differences in the structure of Bacteria, Archaea and methanogens,
respectively. The density of mcrA gene copies was significantly higher in continuous rice soil than in other soils, and the relative abundance of methanogenic archaea was 33% for rice monoculture, whereas represented 15% and 14% for the rice-pasture and rice-soybean soils, respectively. The incubation of soils with tartrate and
succinate confirmed functional differences among soils since rice monoculture showed similar or higher methane production and significantly less acetate and propionate accumulation than other soils. The T-RFLP... Presentar Todo |
Palabras claves : |
CROP ROTATION; CROP ROTATION SYSTEMS; METHANOGENS; RICE INTENSIFICATION; ROOT EXUDATION. |
Asunto categoría : |
F01 Cultivo |
Marc : |
LEADER 03285naa a2200241 a 4500 001 1063031 005 2022-05-17 008 2022 bl uuuu u00u1 u #d 024 7 $a10.1016/j.apsoil.2022.104498$2DOI 100 1 $aPEREIRA MORA, L. 245 $aMethanogenic community linked to organic acids fermentation from root exudates are affected by rice intensification in rotational soil systems. 260 $c2022 300 $a9 p. 500 $aHistory Article: Received 30 December 2021; Received in revised form 1 April 2022; Accepted 4 April 2022; Available online 13 April 2022. Corresponding author: afernand@fq.edu.uy (A. Fernandez-Scavino). 520 $aRice paddy soils are an important biogenic source of methane, a relevant greenhouse gas. Rice rotation with upland crops and pastures affects hydrolytic and fermentative bacteria and methanogenic archaea by sequential exposition to oxic and anoxic conditions. There are several ways to reduce methane emissions from rice paddy soils. Here we examine the effect of intensification in rice rotations with upland crops upon the microbial community structure and methanogenesis when dicarboxylic acids exudated by rice root were amended in microcosms assays. Soils under rotations rice-pasture, rice-soybean and continuous rice, with the last two more intensive systems recently installed in the field experiment, were sampled. Amplicon sequencing of 16S rRNA gene analysis showed that the rotation system was a main driver of the microbial community structure, explaining 33%, 38% and 55% of the differences in the structure of Bacteria, Archaea and methanogens, respectively. The density of mcrA gene copies was significantly higher in continuous rice soil than in other soils, and the relative abundance of methanogenic archaea was 33% for rice monoculture, whereas represented 15% and 14% for the rice-pasture and rice-soybean soils, respectively. The incubation of soils with tartrate and succinate confirmed functional differences among soils since rice monoculture showed similar or higher methane production and significantly less acetate and propionate accumulation than other soils. The T-RFLP analysis of mcrA gene in soils and incubated soils revealed that Rice Cluster I increased after incubation in all rotational soils, whereas Methanosarcinaceae and Methanobacteriaceae remained relevant after incubation. Furthermore, a more stable community of methanogenic archaea was established in soil under continuous rice, since T-RF profiles of soils and incubated soils with dicarboxylic acids grouped together with 62% similarity, while communities from other rotational soils experimented a great shift after incubation with these substrates. Altogether, these results showed that the conversion of rice-pasture rotational fields to a more intensive rice crop production strongly impacts the methanogenic community structure and their potential for methane emission. 653 $aCROP ROTATION 653 $aCROP ROTATION SYSTEMS 653 $aMETHANOGENS 653 $aRICE INTENSIFICATION 653 $aROOT EXUDATION 700 1 $aTERRA, J.A. 700 1 $aFERNÁNDEZ SCAVINO, A. 773 $tApplied Soil Ecology, 2022, volume 176, artículo 104498. OPEN ACCESS. doi: https://doi.org/10.1016/j.apsoil.2022.104498
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