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Registro completo
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Biblioteca (s) : |
INIA Las Brujas. |
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Fecha : |
18/11/2015 |
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Actualizado : |
03/10/2019 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Autor : |
RODRÍGUEZ, A.V.; GOLDBERG, V.; VIOTTI, H.; CIAPPESONI, G. |
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Afiliación : |
A.V. RODRÍGUEZ, Universidad de la República (UdelaR)/ Facultad de Veterinaria; VIRGINIA GOLDBERG BIANCHI, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; H. VIOTTI, Universidad de la República (UdelaR)/ Facultad de Veterinaria; CARLOS GABRIEL CIAPPESONI SCARONE, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
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Título : |
Early detection of Haemonchus contortus infection in sheep using three different faecal occult blood tests. |
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Fecha de publicación : |
2015 |
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Fuente / Imprenta : |
Open Veterinary Journal, 2015, v.5, no.2, p. 90-97. OPEN ACCESS |
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Descripción física : |
2-s2.0-84899666262 |
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ISSN : |
2226-4485 (Print) ISSN: 2218-6050 (Online) |
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Idioma : |
Inglés |
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Notas : |
Submitted: 04/03/2015; Accepted: 01/06/2015; Published: 11/07/2015 |
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Contenido : |
ABSTRACT.
Haemonchus contortus is a blood-sucking parasite causing the presence of faecal occult blood (FOB). The objective was to study three different FOB tests in order to have a new indicator of H. contortus infection in sheep that could be included in the genetic evaluation system as an alternative selection criterion to faecal worm egg count (FEC). A total
of 29 Corriedale lambs were experimentally infected with 10.000 larvae of H. contortus. Stool samples were recorded for FEC and FOB tests (Hexagon, Hematest® and Multistix®), blood for packed cell volume (PCV), haemoglobin, white and red blood cell count (RBC), and FAMACHA© for scoring anaemia. At the end of the experiment lambs were slaughtered to worm burden count. Field infection was achieved in 309 Merino lambs under natural parasite challenge. FEC data were normalized through logarithmic transformation (LnFEC). Pearson correlation was estimated to examine the relationship between all traits. The three tests were able to detect the presence of FOB at day 11. FEC, PCV and RBC decreased to sub-normal values from day 18. FAMACHA© score 3 was considered to be indicative of anaemia. Most of the correlations were of high magnitude, with the exception of Multistix® test that was moderately correlated with haematological parameters, LnFEC and FEC. In field infection, most samples were negative to FOB tests and the correlations were lower than those calculated under experimental infection. In conclusion, FOB tests were able to detect haemonchosis earlier than FEC under high experimental parasite challenge. However, they were
not able to detect FOB under natural mixed parasite challenge. FAMACHA© and PCV demonstrated to be good indicators of Haemonchosis, having moderate to high correlations with FEC. MenosABSTRACT.
Haemonchus contortus is a blood-sucking parasite causing the presence of faecal occult blood (FOB). The objective was to study three different FOB tests in order to have a new indicator of H. contortus infection in sheep that could be included in the genetic evaluation system as an alternative selection criterion to faecal worm egg count (FEC). A total
of 29 Corriedale lambs were experimentally infected with 10.000 larvae of H. contortus. Stool samples were recorded for FEC and FOB tests (Hexagon, Hematest® and Multistix®), blood for packed cell volume (PCV), haemoglobin, white and red blood cell count (RBC), and FAMACHA© for scoring anaemia. At the end of the experiment lambs were slaughtered to worm burden count. Field infection was achieved in 309 Merino lambs under natural parasite challenge. FEC data were normalized through logarithmic transformation (LnFEC). Pearson correlation was estimated to examine the relationship between all traits. The three tests were able to detect the presence of FOB at day 11. FEC, PCV and RBC decreased to sub-normal values from day 18. FAMACHA© score 3 was considered to be indicative of anaemia. Most of the correlations were of high magnitude, with the exception of Multistix® test that was moderately correlated with haematological parameters, LnFEC and FEC. In field infection, most samples were negative to FOB tests and the correlations were lower than those calculated under experimental infection. In conclusion, FOB tests were a... Presentar Todo |
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Palabras claves : |
FAEAL WORM EGG COUNT; FAECAL OCCULT BLOOD TEST; HAEMONCHOSIS; SHEPP. |
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Thesagro : |
ENFERMEDADES PARASITARIAS; OVEJAS; OVINOS. |
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Asunto categoría : |
L73 Enfermedades de los animales |
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URL : |
http://www.ainfo.inia.uy/digital/bitstream/item/5250/1/Goldberg-G.-2015.-Open-Veterinary-Jr.-v.52-p.90-97.pdf
http://www.openveterinaryjournal.com/2015/Volume%205%20(2)/OVJ-038-03-15%20A.V.%20Rodriguez%20et%20al.pdf
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Marc : |
LEADER 02691naa a2200277 a 4500
001 1053938
005 2019-10-03
008 2015 bl uuuu u00u1 u #d
022 $a2226-4485 (Print) ISSN: 2218-6050 (Online)
100 1 $aRODRÍGUEZ, A.V.
245 $aEarly detection of Haemonchus contortus infection in sheep using three different faecal occult blood tests.$h[electronic resource]
260 $c2015
300 $c2-s2.0-84899666262
500 $aSubmitted: 04/03/2015; Accepted: 01/06/2015; Published: 11/07/2015
520 $aABSTRACT. Haemonchus contortus is a blood-sucking parasite causing the presence of faecal occult blood (FOB). The objective was to study three different FOB tests in order to have a new indicator of H. contortus infection in sheep that could be included in the genetic evaluation system as an alternative selection criterion to faecal worm egg count (FEC). A total of 29 Corriedale lambs were experimentally infected with 10.000 larvae of H. contortus. Stool samples were recorded for FEC and FOB tests (Hexagon, Hematest® and Multistix®), blood for packed cell volume (PCV), haemoglobin, white and red blood cell count (RBC), and FAMACHA© for scoring anaemia. At the end of the experiment lambs were slaughtered to worm burden count. Field infection was achieved in 309 Merino lambs under natural parasite challenge. FEC data were normalized through logarithmic transformation (LnFEC). Pearson correlation was estimated to examine the relationship between all traits. The three tests were able to detect the presence of FOB at day 11. FEC, PCV and RBC decreased to sub-normal values from day 18. FAMACHA© score 3 was considered to be indicative of anaemia. Most of the correlations were of high magnitude, with the exception of Multistix® test that was moderately correlated with haematological parameters, LnFEC and FEC. In field infection, most samples were negative to FOB tests and the correlations were lower than those calculated under experimental infection. In conclusion, FOB tests were able to detect haemonchosis earlier than FEC under high experimental parasite challenge. However, they were not able to detect FOB under natural mixed parasite challenge. FAMACHA© and PCV demonstrated to be good indicators of Haemonchosis, having moderate to high correlations with FEC.
650 $aENFERMEDADES PARASITARIAS
650 $aOVEJAS
650 $aOVINOS
653 $aFAEAL WORM EGG COUNT
653 $aFAECAL OCCULT BLOOD TEST
653 $aHAEMONCHOSIS
653 $aSHEPP
700 1 $aGOLDBERG, V.
700 1 $aVIOTTI, H.
700 1 $aCIAPPESONI, G.
773 $tOpen Veterinary Journal, 2015$gv.5, no.2, p. 90-97. OPEN ACCESS
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Registro original : |
INIA Las Brujas (LB) |
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Registro completo
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Biblioteca (s) : |
INIA Treinta y Tres. |
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Fecha actual : |
03/03/2020 |
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Actualizado : |
03/03/2020 |
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Tipo de producción científica : |
Abstracts/Resúmenes |
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Autor : |
TERRA, J.A.; MACEDO, I.; CASTILLO, J. |
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Afiliación : |
JOSÉ ALFREDO TERRA FERNÁNDEZ, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; IGNACIO MACEDO YAPOR, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; EMILSE JESUS CASTILLO VELAZQUEZ, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
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Título : |
Rice yield and N use efficiency in a long-term rice-pastures-crops rotations experiment in Uruguay. [Abstract]. |
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Fecha de publicación : |
2020 |
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Fuente / Imprenta : |
In: International Temperate Rice Conference (7., 2020, Pelotas, RS), Science & Innovation: feeding a world of 10 billion people: proceedings. Pelotas RS, Brasil, February 9-12, 2020. Brasília, DF : Embrapa, 2020. |
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ISBN : |
978-65-00-00331-4 |
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Idioma : |
Inglés |
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Palabras claves : |
CROP DIVERSIFICATION; NO-TILLAGE; ROTACIONES ARROZ-PASTURAS-OTROS CULTIVOS; SUSTAINABLE INTENSIFICATION. |
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Thesagro : |
ROTACIONES. |
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Asunto categoría : |
F01 Cultivo |
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URL : |
http://www.ainfo.inia.uy/digital/bitstream/item/14255/1/IRTC-2020-Terra-Abstract.pdf
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Marc : |
LEADER 00834naa a2200205 a 4500
001 1060864
005 2020-03-03
008 2020 bl uuuu u00u1 u #d
020 $a978-65-00-00331-4
100 1 $aTERRA, J.A.
245 $aRice yield and N use efficiency in a long-term rice-pastures-crops rotations experiment in Uruguay. [Abstract].$h[electronic resource]
260 $c2020
650 $aROTACIONES
653 $aCROP DIVERSIFICATION
653 $aNO-TILLAGE
653 $aROTACIONES ARROZ-PASTURAS-OTROS CULTIVOS
653 $aSUSTAINABLE INTENSIFICATION
700 1 $aMACEDO, I.
700 1 $aCASTILLO, J.
773 $tIn: International Temperate Rice Conference (7., 2020, Pelotas, RS), Science & Innovation: feeding a world of 10 billion people: proceedings. Pelotas RS, Brasil, February 9-12, 2020. Brasília, DF : Embrapa, 2020.
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