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Registro completo
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Biblioteca (s) : |
INIA Las Brujas. |
Fecha : |
19/01/2022 |
Actualizado : |
19/01/2022 |
Autor : |
GUTHRIE, A.D.; LEARMOUNT, J.; VANLEEUWEN, J.; PEREGRINE, A.S.; KELTON, D.; MENZIES, P.I.; FERNÁNDEZ, S.; MARTIN, R.C.; MEDEROS, A.; TAYLOR, M.A. |
Afiliación : |
A.D. GUTHRIE, Ontario Veterinary College, University of Guelph, Guelph, Ontario N1G 2W1, Canada.; J. LEARMOUNT, Ontario Veterinary College, University of Guelph, Guelph, Ontario N1G 2W1, Canada.; J. VANLEEUWEN, Atlantic Veterinary College, University of Prince Edward Island, Charlottetown, Prince Edward Island C1A 4P3, Canada.; A.S. PEREGRINE, Ontario Veterinary College, University of Guelph, Guelph, Ontario N1G 2W1, Canada.; D. KELTON, Ontario Veterinary College, University of Guelph, Guelph, Ontario N1G 2W1, Canada.; P.I. MENZIES, Ontario Veterinary College, University of Guelph, Guelph, Ontario N1G 2W1, Canada.; S. FERNÁNDEZ, Ontario Veterinary College, University of Guelph, Guelph, Ontario N1G 2W1, Canada; Organic Agriculture Centre of Canada, Nova Scotia Agricultural College, Truro, Nova Scotia B2N 5E3, Canada.; R.C. MARTIN, Organic Agriculture Centre of Canada, Nova Scotia Agricultural College, Truro, Nova Scotia B2N 5E3, Canada.; AMERICA ESTHER MEDEROS SILVEIRA, Ontario Veterinary College, University of Guelph, Guelph, Ontario N1G 2W1, Canada.; M.A. TAYLOR, Food and Environment Research Agency, Sand Hutton, York YO41 1LZ, United Kingdom. |
Título : |
Evaluation of a British computer model to simulate gastrointestinal nematodes in sheep on Canadian farms. |
Fecha de publicación : |
2010 |
Fuente / Imprenta : |
Veterinary Parasitology, 2010, Volume 174, Issue 1-2, Pages 92-1052. doi: https://doi.org/10.1016/j.vetpar.2010.08.002 |
ISSN : |
0304-4017 |
DOI : |
10.1016/j.vetpar.2010.08.002 |
Idioma : |
Inglés |
Notas : |
Article history: Received 12 January 2010; Revised 21 July 2010; Accepted 2 August 2010; Available online 11 August 2010. |
Contenido : |
ABSTRACT. - With increasing levels of anthelmintic resistance worldwide and a growing demand to produce more organic products, utilisation of control strategies for gastrointestinal nematodes (GIN) that minimize the use of anthelmintics becomes even more important. This study evaluated the farm-level performance of an existing predictive sheep parasite model from the United Kingdom (UK), using Canadian data. The UK model simulates the epidemiology of three major GIN species of interest (Teladorsagia spp., Haemonchus spp. and Trichostrongylus spp.) and provides a prediction about seasonal parasite levels of lambs and ewes. Model inputs were generated by using data from the first 2 years of a 3-year study (2006-2008) which examined the epidemiology of GIN parasitism in Ontario sheep flocks. Required input data included ewe parasite egg output, pasture-related information and management dynamics. Farm visits in 2006 and 2007 provided relevant data that were collected monthly during the grazing season, on six and seven occasions respectively. These data were collected from 10 ewes and 10 lambs on each farm. For 23 Ontario farms with available data, only 11 farms in 2006 and 14 in 2007 had suitable data to run in the model because the Canadian study was not specifically designed with this simulation model in mind. Observed values for faecal egg counts (FEC) were compared to the model FEC outputs and assessed using linear regression analysis. There was adequate fit between observed and simulated data for 8 of the 11 farms modelled using data generated in 2006 (F=7.55-42.66, df=10-11, R2=0.43-0.81, p=0.021 to <0.001) and with 8 of the farms modelled using data generated in 2007 (F=5.56-35.82, df=9-11, R2=0.36-0.82, p=0.040 to <0.001). We suggest that the poor fit between observed and simulated data for some data sets may be attributable to low-level infection on farms making regression difficult due to insensitivity of the egg count method at low values, or a pattern for immunity in ewes that contradicted the model assumptions. Required model modifications focused on accommodating the differences between UK and Canadian management styles; specifically the practice of bringing lambs indoors for weaning which was sometimes used on Canadian farms. © 2010. MenosABSTRACT. - With increasing levels of anthelmintic resistance worldwide and a growing demand to produce more organic products, utilisation of control strategies for gastrointestinal nematodes (GIN) that minimize the use of anthelmintics becomes even more important. This study evaluated the farm-level performance of an existing predictive sheep parasite model from the United Kingdom (UK), using Canadian data. The UK model simulates the epidemiology of three major GIN species of interest (Teladorsagia spp., Haemonchus spp. and Trichostrongylus spp.) and provides a prediction about seasonal parasite levels of lambs and ewes. Model inputs were generated by using data from the first 2 years of a 3-year study (2006-2008) which examined the epidemiology of GIN parasitism in Ontario sheep flocks. Required input data included ewe parasite egg output, pasture-related information and management dynamics. Farm visits in 2006 and 2007 provided relevant data that were collected monthly during the grazing season, on six and seven occasions respectively. These data were collected from 10 ewes and 10 lambs on each farm. For 23 Ontario farms with available data, only 11 farms in 2006 and 14 in 2007 had suitable data to run in the model because the Canadian study was not specifically designed with this simulation model in mind. Observed values for faecal egg counts (FEC) were compared to the model FEC outputs and assessed using linear regression analysis. There was adequate fit between observe... Presentar Todo |
Palabras claves : |
Canada; Gastrointestinal parasites; Parasite management; Sheep; Simulation modelling. |
Thesagro : |
ENFERMEDADES PARASITARIAS; OVINOS. |
Asunto categoría : |
L01 Ganadería |
Marc : |
LEADER 03463naa a2200349 a 4500 001 1062646 005 2022-01-19 008 2010 bl uuuu u00u1 u #d 022 $a0304-4017 024 7 $a10.1016/j.vetpar.2010.08.002$2DOI 100 1 $aGUTHRIE, A.D. 245 $aEvaluation of a British computer model to simulate gastrointestinal nematodes in sheep on Canadian farms.$h[electronic resource] 260 $c2010 500 $aArticle history: Received 12 January 2010; Revised 21 July 2010; Accepted 2 August 2010; Available online 11 August 2010. 520 $aABSTRACT. - With increasing levels of anthelmintic resistance worldwide and a growing demand to produce more organic products, utilisation of control strategies for gastrointestinal nematodes (GIN) that minimize the use of anthelmintics becomes even more important. This study evaluated the farm-level performance of an existing predictive sheep parasite model from the United Kingdom (UK), using Canadian data. The UK model simulates the epidemiology of three major GIN species of interest (Teladorsagia spp., Haemonchus spp. and Trichostrongylus spp.) and provides a prediction about seasonal parasite levels of lambs and ewes. Model inputs were generated by using data from the first 2 years of a 3-year study (2006-2008) which examined the epidemiology of GIN parasitism in Ontario sheep flocks. Required input data included ewe parasite egg output, pasture-related information and management dynamics. Farm visits in 2006 and 2007 provided relevant data that were collected monthly during the grazing season, on six and seven occasions respectively. These data were collected from 10 ewes and 10 lambs on each farm. For 23 Ontario farms with available data, only 11 farms in 2006 and 14 in 2007 had suitable data to run in the model because the Canadian study was not specifically designed with this simulation model in mind. Observed values for faecal egg counts (FEC) were compared to the model FEC outputs and assessed using linear regression analysis. There was adequate fit between observed and simulated data for 8 of the 11 farms modelled using data generated in 2006 (F=7.55-42.66, df=10-11, R2=0.43-0.81, p=0.021 to <0.001) and with 8 of the farms modelled using data generated in 2007 (F=5.56-35.82, df=9-11, R2=0.36-0.82, p=0.040 to <0.001). We suggest that the poor fit between observed and simulated data for some data sets may be attributable to low-level infection on farms making regression difficult due to insensitivity of the egg count method at low values, or a pattern for immunity in ewes that contradicted the model assumptions. Required model modifications focused on accommodating the differences between UK and Canadian management styles; specifically the practice of bringing lambs indoors for weaning which was sometimes used on Canadian farms. © 2010. 650 $aENFERMEDADES PARASITARIAS 650 $aOVINOS 653 $aCanada 653 $aGastrointestinal parasites 653 $aParasite management 653 $aSheep 653 $aSimulation modelling 700 1 $aLEARMOUNT, J. 700 1 $aVANLEEUWEN, J. 700 1 $aPEREGRINE, A.S. 700 1 $aKELTON, D. 700 1 $aMENZIES, P.I. 700 1 $aFERNÁNDEZ, S. 700 1 $aMARTIN, R.C. 700 1 $aMEDEROS, A. 700 1 $aTAYLOR, M.A. 773 $tVeterinary Parasitology, 2010, Volume 174, Issue 1-2, Pages 92-1052. doi: https://doi.org/10.1016/j.vetpar.2010.08.002
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Registro original : |
INIA Las Brujas (LB) |
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Registro completo
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Biblioteca (s) : |
INIA Tacuarembó. |
Fecha actual : |
21/02/2014 |
Actualizado : |
01/08/2017 |
Autor : |
URIOSTE, M.J.; LUZARDO, S.; DE SOUZA, G.; PÉREZ RUCHEL, A.; FARIÑA, V.; FERNÁNDEZ, G.; REPETTO, J.L.; CAJARVILLE, C.; ARROYO, J.M. |
Afiliación : |
MARÍA JOSÉ URIOSTE; SANTIAGO FELIPE LUZARDO VILLAR, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; GUILLERMO DE SOUZA CAMARGO, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; ANALÍA PÉREZ RUCHEL; VICTORIA FARIÑA; GONZALO FERNÁNDEZ; JOSÉ LUIS REPETTO; CECILIA CAJARVILLE; JOSÉ MARÍA ARROYO. |
Título : |
Desempeño de corderos de engorde intensivo alimentados a base de dietas mixtas con distintas fuentes de energía. |
Fecha de publicación : |
2017 |
Fuente / Imprenta : |
In: Jornadas Uruguayas de Buiatría, 45., 2017, Paysandú, Uy., Matto, C.; Delpiazzo, R.(Ed.). Trabajos preentados. Paysandú: Centro Médico Veterinario de Paysandú/Sociedad Uruguaya de Buiatría, 2017. |
Páginas : |
p. 215-217 |
Idioma : |
Español |
Contenido : |
Se estudió eL desempeño de corderos engordados en base a dietas mixtas pastura+ración totaLmente mezclada difiriendo en la fuente energética: amilácea vs no amil
ácea frente a una dieta intensiva. Los parámetros productivos de estas dietas mixtas fueron comparables a la dieta intensiva con consumos (1,261,46 kg/d) y crecimientos similares (>0.320kg/d) pero logrando una mejor eficiencia de conversión (4.03 V5 4,88). No hubo diferencias en Las características de las carcasas entre los distintos sistemas de alimentación. // Lambs fattening performance under different feeding diets was studied. The diets consisted on two mixed diets of pasture+totally mixed ration differing in the energy source: amyLaceous V5 non amyiLaceous, and an intensive diet. The productive performance of these mixed diets were comparabLe to the
intensive diet obtaining simiLar feed intake (1.26-1,46 kg/d) and growth (>0.320 kg/d) but achieving a better feed conversion efficiency (4,03 vs 4.88). There were no differences in the carcass characteristics between the different feeding systems. |
Palabras claves : |
DIETAS MIXTAS. |
Thesagro : |
CORDEROS; ENGORDE; OVINOS. |
Asunto categoría : |
L02 Alimentación animal |
Marc : |
LEADER 01973nam a2200265 a 4500 001 1018346 005 2017-08-01 008 2017 bl uuuu u01u1 u #d 100 1 $aURIOSTE, M.J. 245 $aDesempeño de corderos de engorde intensivo alimentados a base de dietas mixtas con distintas fuentes de energía. 260 $aIn: Jornadas Uruguayas de Buiatría, 45., 2017, Paysandú, Uy., Matto, C.; Delpiazzo, R.(Ed.). Trabajos preentados. Paysandú: Centro Médico Veterinario de Paysandú/Sociedad Uruguaya de Buiatría$c2017 300 $ap. 215-217 520 $aSe estudió eL desempeño de corderos engordados en base a dietas mixtas pastura+ración totaLmente mezclada difiriendo en la fuente energética: amilácea vs no amil ácea frente a una dieta intensiva. Los parámetros productivos de estas dietas mixtas fueron comparables a la dieta intensiva con consumos (1,261,46 kg/d) y crecimientos similares (>0.320kg/d) pero logrando una mejor eficiencia de conversión (4.03 V5 4,88). No hubo diferencias en Las características de las carcasas entre los distintos sistemas de alimentación. // Lambs fattening performance under different feeding diets was studied. The diets consisted on two mixed diets of pasture+totally mixed ration differing in the energy source: amyLaceous V5 non amyiLaceous, and an intensive diet. The productive performance of these mixed diets were comparabLe to the intensive diet obtaining simiLar feed intake (1.26-1,46 kg/d) and growth (>0.320 kg/d) but achieving a better feed conversion efficiency (4,03 vs 4.88). There were no differences in the carcass characteristics between the different feeding systems. 650 $aCORDEROS 650 $aENGORDE 650 $aOVINOS 653 $aDIETAS MIXTAS 700 1 $aLUZARDO, S. 700 1 $aDE SOUZA, G. 700 1 $aPÉREZ RUCHEL, A. 700 1 $aFARIÑA, V. 700 1 $aFERNÁNDEZ, G. 700 1 $aREPETTO, J.L. 700 1 $aCAJARVILLE, C. 700 1 $aARROYO, J.M.
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