Artículo

Mejía, M.E.; Perri, A.F.; Licoff, N.; Miglierina, M.M.; Cseh, S.; Ornstein, A.M.; Becu-Villalobos, D.; Lacau-Mengido, I.M. "Comparison of three methods for gastrointestinal nematode diagnosis determination in grazing dairy cattle in relation to milk production" (2011) Veterinary Parasitology. 183(1-2):174-177
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Abstract:

Development of resistance to anthelmintic drugs has motivated the search for diagnostic methods to identify animals for targeted selective treatments. We compared three methods for the diagnosis of nematode infection in relation to milk production in a fully grazing dairy herd of 150 cows in the humid Pampa (Argentina). Animals had feces, blood and milk sampled during the first postpartum month for EPG, pepsinogen and anti- Ostertagia antibody determination, respectively. With the results obtained two groups of cows, divided in high and low parasite burden, were conformed for each method, and milk production was then compared between groups. When cows were separated by the EPG method (EPG = 0 (N= 106) vs. EPG > 0 (N= 44)) a difference of nearly 800. l of milk per cow per lactation was found (P< 0.05). On the other hand, milk production between groups separated by Pepsinogen (mUtyr ≤ 1000 vs. mUtyr > 1000) or by anti- Ostertagia (ODR ≤ 0.5 vs. ODR > 0.5) results did not differ. Interestingly, proportion of cows in each group differed between methods (P< 0.0001), and the anti- Ostertagia method yielded significantly more cows in the high index group compared to results using the EPG or Pepsinogen method. No correlations were found between parasite indexes determined by the different methods. High parasite burden estimation found may be ascribed to the production system, fully grazing all year round, and to the sampling time, at the beginning of lactation with cows in negative energy balance and depressed immunity. The fact that the cows were born and reared outside, on pasture with continuous nematode larvae exposure, may also account for the results obtained. In conclusion, EPG counting during the first postpartum month may be a useful tool for the diagnosis of production impairment induced by high nematode burden in adult grazing dairy cows. The anthelmintic treatment of only the EPG-positive recently calved cows would improve milk production, while reducing selective pressure on nematode population for the development of resistance. © 2011 Elsevier B.V.

Registro:

Documento: Artículo
Título:Comparison of three methods for gastrointestinal nematode diagnosis determination in grazing dairy cattle in relation to milk production
Autor:Mejía, M.E.; Perri, A.F.; Licoff, N.; Miglierina, M.M.; Cseh, S.; Ornstein, A.M.; Becu-Villalobos, D.; Lacau-Mengido, I.M.
Filiación:IBYME-CONICET, Vuelta de Obligado 2490, 1428 Buenos Aires, Argentina
Esc. MCML Inchausti, UNLP, 6660 25 de mayo, Pcia de Buenos Aires, Argentina
INTA.Balcarce, Depto. Producción Animal, 7620 Balcarce, Pcia de Buenos Aires, Argentina
Palabras clave:Anti-Ostertagia antibody; Dairy cattle; EPG; Gastrointestinal nematodes; Milk production; Pepsinogen; pepsinogen; antibody detection; Argentina; article; blood sampling; cattle; energy balance; feces analysis; gastrointestinal infection; immune deficiency; intermethod comparison; lactation; milk production; nematodiasis; nonhuman; parasite examination; pathogen load; puerperium; Animals; Antibodies, Helminth; Argentina; Cattle; Cattle Diseases; Dairying; Feces; Female; Gastrointestinal Diseases; Lactation; Nematoda; Nematode Infections; Ostertagia; Ostertagiasis; Parasite Egg Count; Parasite Load; Pepsinogens; Animalia; Bos; Nematoda; Ostertagia
Año:2011
Volumen:183
Número:1-2
Página de inicio:174
Página de fin:177
DOI: http://dx.doi.org/10.1016/j.vetpar.2011.06.027
Título revista:Veterinary Parasitology
Título revista abreviado:Vet. Parasitol.
ISSN:03044017
CODEN:VPARD
CAS:pepsinogen, 9001-10-9; Antibodies, Helminth; Pepsinogens
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03044017_v183_n1-2_p174_Mejia

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Citas:

---------- APA ----------
Mejía, M.E., Perri, A.F., Licoff, N., Miglierina, M.M., Cseh, S., Ornstein, A.M., Becu-Villalobos, D.,..., Lacau-Mengido, I.M. (2011) . Comparison of three methods for gastrointestinal nematode diagnosis determination in grazing dairy cattle in relation to milk production. Veterinary Parasitology, 183(1-2), 174-177.
http://dx.doi.org/10.1016/j.vetpar.2011.06.027
---------- CHICAGO ----------
Mejía, M.E., Perri, A.F., Licoff, N., Miglierina, M.M., Cseh, S., Ornstein, A.M., et al. "Comparison of three methods for gastrointestinal nematode diagnosis determination in grazing dairy cattle in relation to milk production" . Veterinary Parasitology 183, no. 1-2 (2011) : 174-177.
http://dx.doi.org/10.1016/j.vetpar.2011.06.027
---------- MLA ----------
Mejía, M.E., Perri, A.F., Licoff, N., Miglierina, M.M., Cseh, S., Ornstein, A.M., et al. "Comparison of three methods for gastrointestinal nematode diagnosis determination in grazing dairy cattle in relation to milk production" . Veterinary Parasitology, vol. 183, no. 1-2, 2011, pp. 174-177.
http://dx.doi.org/10.1016/j.vetpar.2011.06.027
---------- VANCOUVER ----------
Mejía, M.E., Perri, A.F., Licoff, N., Miglierina, M.M., Cseh, S., Ornstein, A.M., et al. Comparison of three methods for gastrointestinal nematode diagnosis determination in grazing dairy cattle in relation to milk production. Vet. Parasitol. 2011;183(1-2):174-177.
http://dx.doi.org/10.1016/j.vetpar.2011.06.027