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Hubertus Hertzberg - One of the best experts on this subject based on the ideXlab platform.

  • individual administration of three tanniferous forage plants to lambs artificially infected with haemonchus contortus and Cooperia curticei
    2007
    Co-Authors: Felix Heckendorn, Dieter Adrian Häring, Veronika Maurer, Hubertus Hertzberg, Markus Senn
    Abstract:

    Abstract We investigated direct anthelmintic effects associated with the feeding of fresh tanniferous forages against established populations of Haemonchus contortus and Cooperia curticei in lambs. Twenty-four parasite naive lambs were inoculated with a single dose of infective larvae of these two parasites 27 days prior to the start of the feeding experiment. Lambs were individually fed with either chicory (Cichorium intybus), birdsfoot trefoil (Lotus corniculatus), sainfoin (Onobrychis viciifolia) or a ryegrass/lucerne mixture (control) for 17 days. Animals where then united to one flock and subjected to control feeding for another 11 days to test the sustainability of potentially lowered egg excretion generated by tanniferous forage feeding. When compared to the control, administration of all tanniferous forages was associated with significant reductions of total daily faecal egg output specific to H. contortus (chicory: 89%; birdsfoot trefoil: 63%; sainfoin: 63%; all tests P

  • Effect of sainfoin ( Onobrychis Viciifolia ) silage and hay against gastrointestinal nematodes in lambs
    2007
    Co-Authors: Felix Heckendorn, Dieter Adrian Häring, Veronika Maurer, Wolfgang Langhans, Hubertus Hertzberg
    Abstract:

    The objective of the studywas to examine the effect of dried and ensiled sainfoin (Onobrychis viciifolia) on established populations of Haemonchus contortus (abomasum) and Cooperia curticei (small intestine) in lambs under controlled conditions. Twenty-four parasite nai¨ve lambs were inoculated with a single dose of infective larvae of these parasites 28 days prior to the start of the feeding experiment. Twenty-four days post-infection, 4 days prior to the start of the feeding experiment, animals were allocated to four groups according to egg excretion, liveweight and sex. GroupsAandBreceived sainfoin hay and control hay, respectively, for 16 days. Groups CandDwere fed on sainfoin silage or control silage for the same period. Feeds were offered ad libitumand on the basis of daily refusals were supplemented with concentrate in order to make them isoproteic and isoenergetic. Individual faecal egg counts on a dry matter basis (FECDM) were performed every 3–4 days and faecal cultures and packed cell volume (PCV) measurements were done weekly. After 16 days of experimental feeding, all animals were slaughtered and adult wormpopulations were determined. The consumption of conserved sainfoin was associated with a reduction of adult H. contortus (47%in the case of hay, P < 0.05; 49%in the case of silage, P = 0.075) but had little effect on adult C. curticei. Compared to the controls, H. contortus specific FECDM was reduced by 58% (P < 0.01) in the sainfoin hay group and by 48%(P = 0.075) in the sainfoin silage group. For both sainfoin feeds FECDMspecific to C. curticei were significantly decreased when compared to the control feeds (hay 81% and silage 74%, both tests P < 0.001). Our data suggest that different mechanisms were responsible for the reduction in FECDM in response to feeding tanniferous fodder. For H. contortus, the decrease seemed to be due to a nematocidal effect towards adult H. contortus. In contrast for C. curticei, the reduction in FECDM appeared to be a result of a reduced per capita fecundity. For both, hay and silage, an antiparasitic effect could be shown, offering promising perspectives for the use of conserved tanniferous fodder as a complementary control approach against GIN. # 2006 Elsevier B.V. All rights reserved.

  • Effect of sainfoin (Onobrychis viciifolia) silage and hay on established populations of Haemonchus contortus and Cooperia curticei in lambs.
    2006
    Co-Authors: Felix Heckendorn, Dieter Adrian Häring, Veronika Maurer, Wolfgang Langhans, Jakob Zinsstag, Hubertus Hertzberg
    Abstract:

    Abstract The objective of the study was to examine the effect of dried and ensiled sainfoin ( Onobrychis viciifolia ) on established populations of Haemonchus contortus (abomasum) and Cooperia curticei (small intestine) in lambs under controlled conditions. Twenty-four parasite naive lambs were inoculated with a single dose of infective larvae of these parasites 28 days prior to the start of the feeding experiment. Twenty-four days post-infection, 4 days prior to the start of the feeding experiment, animals were allocated to four groups according to egg excretion, live weight and sex. Groups A and B received sainfoin hay and control hay, respectively, for 16 days. Groups C and D were fed on sainfoin silage or control silage for the same period. Feeds were offered ad libitum and on the basis of daily refusals were supplemented with concentrate in order to make them isoproteic and isoenergetic. Individual faecal egg counts on a dry matter basis (FECDM) were performed every 3–4 days and faecal cultures and packed cell volume (PCV) measurements were done weekly. After 16 days of experimental feeding, all animals were slaughtered and adult worm populations were determined. The consumption of conserved sainfoin was associated with a reduction of adult H. contortus (47% in the case of hay, P P  = 0.075) but had little effect on adult C. curticei . Compared to the controls, H. contortus specific FECDM was reduced by 58% ( P P  = 0.075) in the sainfoin silage group. For both sainfoin feeds FECDM specific to C. curticei were significantly decreased when compared to the control feeds (hay 81% and silage 74%, both tests P H. contortus , the decrease seemed to be due to a nematocidal effect towards adult H. contortus . In contrast for C. curticei , the reduction in FECDM appeared to be a result of a reduced per capita fecundity. For both, hay and silage, an antiparasitic effect could be shown, offering promising perspectives for the use of conserved tanniferous fodder as a complementary control approach against GIN.

Gilson Pereira De ,oliveira - One of the best experts on this subject based on the ideXlab platform.

  • Fauna helmintológica de ovinos provenientes da microrregião de Jaboticabal, estado de São Paulo, Brasil
    2014
    Co-Authors: Maciel, Willian Giquelin, Felippelli Gustavo, Zanetti Lopes, Welber Daniel, Pires Teixeira, Weslen Fabricio, Cruz, Breno Cayeiro, Santos, Thais Rabelo Dos, Buzzulini Carolina, Favero Flavia, Gomes, Lucas Costa, Gilson Pereira De ,oliveira
    Abstract:

    This study evaluated the prevalence and counting parasitism of different species of helminths of sheep from the micro-region of Jaboticabal of Sao Paulo state. For this, 66 animals naturally infected, four to 36 months of age, raised in pasture, were selected. The results of necropsy revealed the presence of seven genera and 12 species with the following prevalence and mean count: Haemonchus contortus: 100.0% (2947.2); Trichostrongylus colubriformis: 90.9% (3048.8); Cooperia curticei: 56.0% (256.5); Oesophagostomum columbianum: 48.4% (36.0); Cooperia punctata: 30.3% (94.5); Trichostrongylus axei: 22.7% (26.5); Strongyloides papillosus: 19.6% (83.0), Haemonchus contortus (L4): 7.5% (17.2), Cooperia pectinata: 10.6% (12.9), Trichuris ovis: 10.6 % (0.6); Cooperia spatulata 4.5% (0.3); Capillaria bovis: 4.5% (0.1). The mean parasitism of helminthswas 6524.7 per animal. Haemonchus contortus (adults and L4) and Trichostrongylus colubriformis corresponded to 45.4% and 46.7% of the average worm burden totally, respectively. Based in the results obtained in this study, can be concluded that the two most abundant species of helminths and important, the micro-region of Jaboticabal are Trichostrongylus colubriformis and Haemonchus contortus, and these two species amounted to 92.1% of the distribution percentage of helminths collected from all animals. These results demonstrate the importance of conducting a counts of eggs per gram of feces (EPG) in the herds of this region when FAMACHA is used on a particular property, since this method control does not allow to diagnostic the damage/clinical signs in animals infected by T. colubriformis, because this specie does not have hematophagism habit on animals

  • Fauna helmintológica de ovinos provenientes da microrregião de Jaboticabal, estado de São Paulo, Brasil
    2014
    Co-Authors: Willian Giquelin Maciel, Gustavo Felippelli, Welber Daniel Zanetti Lopes, Weslen Fabricio Pires Teixeira, Breno Cayeiro Cruz, Thais Rabelo Dos Santos, Carolina Buzzulini, Flavia Favero, Lucas Costa Gomes, Gilson Pereira De ,oliveira
    Abstract:

    Avaliou-se a prevalência e a contagem parasitária das diferentes espécies de helmintos de ovinos provenientes da microrregião de Jaboticabal, região Noroeste de São Paulo. Para tanto, foram utilizados 66 animais naturalmente infectados, de quatro a 36 meses de idade, criados em regime extensivo. Os resultados necroscópicos revelaram a presença de sete gêneros e 12 espécies, com a seguinte prevalência e a média de parasitismo: Haemonchus contortus: 100,0% (2947,2); Trichostrongylus colubriformis: 90,9% (3048,8); Cooperia curticei: 56,0% (256,5); Oesophagostomum columbianum: 48,4% (36,0); Cooperia punctata: 30,3% (94,5); Trichostrongylus axei: 22,7% (26,5); Strongyloides papillosusi: 19,6% (83,0); Haemonchus contortus (L4): 7,5% (17,2); Cooperia pectinatai: 10,6% (12,9); Trichuris ovis: 10,6% (0,6); Cooperia spatulata 4,5% (0,3); Capillaria bovis: 4,5% (0,1). A carga parasitária média foi de 6.524,7 helmintos por animal. Haemonchus contortus (Adultos e L4) e Trichostrongylus colubriformis corresponderam a 45,4% e 46,7% da carga parasitária média total, respectivamente. Pode-se concluir que as duas espécies de helmintos mais abundantes e importantes da microrregião de Jaboticabal/São Paulo foram Trichostrongylus colubriformis e Haemonchus contortus, sendo que essas duas espécies perfizeram 92,1% da distribuição percentual dos helmintos recolhidos de todos os animais. Tais resultados demonstram a importância em se realizar um monitoramento das contagens de ovos por grama de fezes (OPG) dos rebanhos desta região, quando o método FAMACHA for empregado em uma determinada propriedade, uma vez que este método de controle, geralmente, não permite diagnosticar os danos/sinais clínicos desencadeados nos animais pelo T. colubriformis, em função de essa espécie não possuir hábito de hematofagismo sobre os hospedeiros

Camargo Silva, Ángela Lucia - One of the best experts on this subject based on the ideXlab platform.

  • Efecto in vitro de los taninos condensados de las plantas leucaena leucocephala, calliandra calothyrsus y flemingia macrophylla sobre huevos y larvas l3 de nematodos gastrointestinales de ovinos
    2016
    Co-Authors: Bernal Peralta, Adriana Del Socorro, Camargo Silva, Ángela Lucia
    Abstract:

    Sheep farming in Colombia has gained significant ground in recent years. Colombian sheep herd amounts to 2 million head across the country. The gastrointestinal nematode infections have been linked to major economic losses for this sector in tropical regions. The growing resistance to anthelmintics traditional medicines of these nematodes is the result of improper handling of pharmaceutical products, lack of mechanization, among other factors; therefore be implemented therapeutic alternatives that are sustainable and effective from an environmental perspective; so that the use of medicinal plants with anthelmintic activity as Leucaena leucocephala, Calliandra calothyrsus and Flemingia macrophylla could pose as an alternative solution to the problem of resistance of these parasites to research products alopáticos. In this investigation in vitro effect was evaluated condensed tannins from plant extracts L. leucocephala, C. calothyrsus and F. macrophylla on eggs and larvae L3 of gastrointestinal nematodes of sheep. Methodology: training phases and final test were developed thanks to the facilitacion helminthology laboratory in the Colombian Agricultural Research Corporation (CORPOICA) of Tibaitata; the process of obtaining condensed tannins was carried out by the laboratory of chemistry at the University of Tolima (Ibague); different concentrations of these tannins from which testing inhibition of hatching and removal of the cuticle were conducted, prefetching eggs and larvae infective L3 stage, through incubation and cultivation thereof from a naturally infested sheep. Morphometric identification of L3 larvae determining percentage participation of each genus and species was performed. Results: In the morphometric identifying the most representative percentage was 58% for Haemonchus contortus followed by 26% of Trichostrongylus falculatus, by contrast Cooperia curticei recorded 1%. Extracts of Calliandra calothyrsus condensed tannins had higher efficacy in inhibiting egg hatching, both the D50 1075.25 ug / ml as the D99 3601.23 ug / ml, the Flemingia macrophylla and Leucaena leucocephala, inhibited egg hatching process significantly since the higher dosage strength showed a better response, unlike C. calothyrsus, which was not evident a dose dependent effect. The results obtained by analysis Logyt Probit in removing the cuticle were performed based on the average values in each test, the D50 better efficacy showed was the extract condensed tannin C.calothyrsus 1.915 ug / ml, with respect to extracts from the other two plants, while D99 F.macrophylla showed more effective (326 ug / ml). All extracts inhibited the elimination of cuticle from the lowest concentration (31.25 ug / ml) and the effect was dose dependent; percent inhibition with the higuest concentration (1000 mg/ml) were respectively 99%, 98% and 92% for Calliandra, Leucaena and Flemingia. Keywords: Sheep, gastrointestinal nematodes, condensed tannins, Leucaena leucocephala, Calliandra calothyrsus, Flemingia macrophylla.La ganadería ovina en Colombia ha ganado un importante terreno durante los últimos años. El hato ovino Colombiano asciende a 2 millones de cabezas en todo el país. Las infecciones por nematodos gastrointestinales se han relacionado con grandes pérdidas económicas para este sector en regiones tropicales. La creciente resistencia a medicamentos antihelmínticos tradicionales de estos nematodos es el resultado del inadecuado manejo de los productos farmacéuticos, la falta de tecnificación, entre otros factores; por lo cual se deben implementar alternativas terapéuticas que sean sostenibles y eficaces desde la perspectiva ambiental; es así, que el uso de plantas medicinales con actividad antihelmíntica como la Leucaena leucocephala, Calliandra calothyrsus y Flemingia macrophylla, podrían plantearse como una solución alternativa al problema de resistencia de éstos parásitos a productos alopáticos.En ésta investigación se evaluó el efecto in vitro de los taninos condensados de extractos de las plantas L. leucocephala, C. calothyrsus y F. macrophylla sobre huevos y larvas L3 de nematodos gastrointestinales de ovinos. Metodología: las fases de entrenamiento y pruebas finales se desarrollaron gracias a la facilitación del laboratorio de helmintología en la corporación Colombiana de investigación agropecuaria (CORPOICA) de Tibaitatá; el proceso de obtención de taninos condensados fue realizado por el laboratorio de química en la Universidad del Tolima (Ibagué); Se hicieron diferentes concentraciones de dichos taninos a partir de las cuales se llevaron a cabo las pruebas de inhibición de la eclosión y eliminación de la cutícula; previa obtención de huevos y larvas en estadio infectante L3, por medio de incubación y cultivo de los mismos a partir de un ovino infestado naturalmente. Se realizó la identificación morfométrica de larvas L3 determinando en porcentaje la participación de cada género y especie. Resultados: En la identificación morfométrica el porcentaje más representativo fue de un 58% correspondiente a Haemonchus contortus seguido de un 26% de Trichostrongylus falculatus, en contraste Cooperia curticei registró el 1%. Los extractos de taninos condensados de Calliandra calothyrsus presentaron mayor eficacia en la inhibición de la eclosión de huevos, tanto en la D50 1075,25 μg/ml como la D99 3601,23 μg/ml, los de Flemingia macrophylla y Leucaena leucocephala, inhibieron el proceso de eclosión de huevos de manera significativa ya que a mayor concentración de la dosis se presentó una mejor respuesta, a diferencia de C. calothyrsus, donde no fue evidente un efecto dosis dependiente. Los resultados obtenidos por el análisis Logyt Probit en la eliminación de la cutícula se realizaron con base a los valores promedios en cada prueba, la D50 que mejor eficacia mostró fue la del extracto de tanino condensado de C. calothyrsus 1,915 μg/ml, con respecto a los extractos de las otras dos plantas, mientras que F. macrophylla presentó D99 más eficaz (326 μg/ml). Todos los extractos inhibieron la eliminación de la cutícula, desde la concentración más baja (31,25 μg/ml) y el efecto fue dosis dependiente; los porcentajes de inhibición con la concentración más alta (1000 μg/ml) fueron respectivamente del 99%, 98% y 92% para Calliandra, Leucaena y Flemingia. Palabras Clave: Ovinos, nematodos gastrointestinales, taninos condensados, Leucaena leucocephala, Calliandra calothyrsus, Flemingia macrophylla

  • Efecto in vitro de los taninos condensados de las plantas leucaena leucocephala, calliandra calothyrsus y flemingia macrophylla sobre huevos y larvas l3 de nematodos gastrointestinales de ovinos
    2016
    Co-Authors: Bernal Peralta, Adriana Del Socorro, Camargo Silva, Ángela Lucia
    Abstract:

    La ganadería ovina en Colombia ha ganado un importante terreno durante los últimos años. El hato ovino Colombiano asciende a 2 millones de cabezas en todo el país. Las infecciones por nematodos gastrointestinales se han relacionado con grandes pérdidas económicas para este sector en regiones tropicales. La creciente resistencia a medicamentos antihelmínticos tradicionales de estos nematodos es el resultado del inadecuado manejo de los productos farmacéuticos, la falta de tecnificación, entre otros factores; por lo cual se deben implementar alternativas terapéuticas que sean sostenibles y eficaces desde la perspectiva ambiental; es así, que el uso de plantas medicinales con actividad antihelmíntica como la Leucaena leucocephala, Calliandra calothyrsus y Flemingia macrophylla, podrían plantearse como una solución alternativa al problema de resistencia de éstos parásitos a productos alopáticos.En ésta investigación se evaluó el efecto in vitro de los taninos condensados de extractos de las plantas L. leucocephala, C. calothyrsus y F. macrophylla sobre huevos y larvas L3 de nematodos gastrointestinales de ovinos. Metodología: las fases de entrenamiento y pruebas finales se desarrollaron gracias a la facilitación del laboratorio de helmintología en la corporación Colombiana de investigación agropecuaria (CORPOICA) de Tibaitatá; el proceso de obtención de taninos condensados fue realizado por el laboratorio de química en la Universidad del Tolima (Ibagué); Se hicieron diferentes concentraciones de dichos taninos a partir de las cuales se llevaron a cabo las pruebas de inhibición de la eclosión y eliminación de la cutícula; previa obtención de huevos y larvas en estadio infectante L3, por medio de incubación y cultivo de los mismos a partir de un ovino infestado naturalmente. Se realizó la identificación morfométrica de larvas L3 determinando en porcentaje la participación de cada género y especie. Resultados: En la identificación morfométrica el porcentaje más representativo fue de un 58% correspondiente a Haemonchus contortus seguido de un 26% de Trichostrongylus falculatus, en contraste Cooperia curticei registró el 1%. Los extractos de taninos condensados de Calliandra calothyrsus presentaron mayor eficacia en la inhibición de la eclosión de huevos, tanto en la D50 1075,25 μg/ml como la D99 3601,23 μg/ml, los de Flemingia macrophylla y Leucaena leucocephala, inhibieron el proceso de eclosión de huevos de manera significativa ya que a mayor concentración de la dosis se presentó una mejor respuesta, a diferencia de C. calothyrsus, donde no fue evidente un efecto dosis dependiente. Los resultados obtenidos por el análisis Logyt Probit en la eliminación de la cutícula se realizaron con base a los valores promedios en cada prueba, la D50 que mejor eficacia mostró fue la del extracto de tanino condensado de C. calothyrsus 1,915 μg/ml, con respecto a los extractos de las otras dos plantas, mientras que F. macrophylla presentó D99 más eficaz (326 μg/ml). Todos los extractos inhibieron la eliminación de la cutícula, desde la concentración más baja (31,25 μg/ml) y el efecto fue dosis dependiente; los porcentajes de inhibición con la concentración más alta (1000 μg/ml) fueron respectivamente del 99%, 98% y 92% para Calliandra, Leucaena y Flemingi

Felix Heckendorn - One of the best experts on this subject based on the ideXlab platform.

  • individual administration of three tanniferous forage plants to lambs artificially infected with haemonchus contortus and Cooperia curticei
    2007
    Co-Authors: Felix Heckendorn, Dieter Adrian Häring, Veronika Maurer, Hubertus Hertzberg, Markus Senn
    Abstract:

    Abstract We investigated direct anthelmintic effects associated with the feeding of fresh tanniferous forages against established populations of Haemonchus contortus and Cooperia curticei in lambs. Twenty-four parasite naive lambs were inoculated with a single dose of infective larvae of these two parasites 27 days prior to the start of the feeding experiment. Lambs were individually fed with either chicory (Cichorium intybus), birdsfoot trefoil (Lotus corniculatus), sainfoin (Onobrychis viciifolia) or a ryegrass/lucerne mixture (control) for 17 days. Animals where then united to one flock and subjected to control feeding for another 11 days to test the sustainability of potentially lowered egg excretion generated by tanniferous forage feeding. When compared to the control, administration of all tanniferous forages was associated with significant reductions of total daily faecal egg output specific to H. contortus (chicory: 89%; birdsfoot trefoil: 63%; sainfoin: 63%; all tests P

  • Effect of sainfoin ( Onobrychis Viciifolia ) silage and hay against gastrointestinal nematodes in lambs
    2007
    Co-Authors: Felix Heckendorn, Dieter Adrian Häring, Veronika Maurer, Wolfgang Langhans, Hubertus Hertzberg
    Abstract:

    The objective of the studywas to examine the effect of dried and ensiled sainfoin (Onobrychis viciifolia) on established populations of Haemonchus contortus (abomasum) and Cooperia curticei (small intestine) in lambs under controlled conditions. Twenty-four parasite nai¨ve lambs were inoculated with a single dose of infective larvae of these parasites 28 days prior to the start of the feeding experiment. Twenty-four days post-infection, 4 days prior to the start of the feeding experiment, animals were allocated to four groups according to egg excretion, liveweight and sex. GroupsAandBreceived sainfoin hay and control hay, respectively, for 16 days. Groups CandDwere fed on sainfoin silage or control silage for the same period. Feeds were offered ad libitumand on the basis of daily refusals were supplemented with concentrate in order to make them isoproteic and isoenergetic. Individual faecal egg counts on a dry matter basis (FECDM) were performed every 3–4 days and faecal cultures and packed cell volume (PCV) measurements were done weekly. After 16 days of experimental feeding, all animals were slaughtered and adult wormpopulations were determined. The consumption of conserved sainfoin was associated with a reduction of adult H. contortus (47%in the case of hay, P < 0.05; 49%in the case of silage, P = 0.075) but had little effect on adult C. curticei. Compared to the controls, H. contortus specific FECDM was reduced by 58% (P < 0.01) in the sainfoin hay group and by 48%(P = 0.075) in the sainfoin silage group. For both sainfoin feeds FECDMspecific to C. curticei were significantly decreased when compared to the control feeds (hay 81% and silage 74%, both tests P < 0.001). Our data suggest that different mechanisms were responsible for the reduction in FECDM in response to feeding tanniferous fodder. For H. contortus, the decrease seemed to be due to a nematocidal effect towards adult H. contortus. In contrast for C. curticei, the reduction in FECDM appeared to be a result of a reduced per capita fecundity. For both, hay and silage, an antiparasitic effect could be shown, offering promising perspectives for the use of conserved tanniferous fodder as a complementary control approach against GIN. # 2006 Elsevier B.V. All rights reserved.

  • Effect of sainfoin (Onobrychis viciifolia) silage and hay on established populations of Haemonchus contortus and Cooperia curticei in lambs.
    2006
    Co-Authors: Felix Heckendorn, Dieter Adrian Häring, Veronika Maurer, Wolfgang Langhans, Jakob Zinsstag, Hubertus Hertzberg
    Abstract:

    Abstract The objective of the study was to examine the effect of dried and ensiled sainfoin ( Onobrychis viciifolia ) on established populations of Haemonchus contortus (abomasum) and Cooperia curticei (small intestine) in lambs under controlled conditions. Twenty-four parasite naive lambs were inoculated with a single dose of infective larvae of these parasites 28 days prior to the start of the feeding experiment. Twenty-four days post-infection, 4 days prior to the start of the feeding experiment, animals were allocated to four groups according to egg excretion, live weight and sex. Groups A and B received sainfoin hay and control hay, respectively, for 16 days. Groups C and D were fed on sainfoin silage or control silage for the same period. Feeds were offered ad libitum and on the basis of daily refusals were supplemented with concentrate in order to make them isoproteic and isoenergetic. Individual faecal egg counts on a dry matter basis (FECDM) were performed every 3–4 days and faecal cultures and packed cell volume (PCV) measurements were done weekly. After 16 days of experimental feeding, all animals were slaughtered and adult worm populations were determined. The consumption of conserved sainfoin was associated with a reduction of adult H. contortus (47% in the case of hay, P P  = 0.075) but had little effect on adult C. curticei . Compared to the controls, H. contortus specific FECDM was reduced by 58% ( P P  = 0.075) in the sainfoin silage group. For both sainfoin feeds FECDM specific to C. curticei were significantly decreased when compared to the control feeds (hay 81% and silage 74%, both tests P H. contortus , the decrease seemed to be due to a nematocidal effect towards adult H. contortus . In contrast for C. curticei , the reduction in FECDM appeared to be a result of a reduced per capita fecundity. For both, hay and silage, an antiparasitic effect could be shown, offering promising perspectives for the use of conserved tanniferous fodder as a complementary control approach against GIN.

Tristão, Mauro Sérgio Guimarães - One of the best experts on this subject based on the ideXlab platform.