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Universidad Nacional Mayor de San Marcos (2011)

Determinación de los factores de riesgo en la presentación de eimeria ssp. En crias de alpacas en el centro de investigación y producción (cip) la raya-Puno

Rodríguez Hawkins, Antony Richard

Titre : Determinación de los factores de riesgo en la presentación de eimeria ssp. En crias de alpacas en el centro de investigación y producción (cip) la raya-Puno

Auteur : Rodríguez Hawkins, Antony Richard

Université de soutenance : Universidad Nacional Mayor de San Marcos

Grade : Profesional de Médico Veterinario 2011

Résumé
A total of 478 fecal samples taken from healthy alpaca crias aged 1-90 days at Centro de Investigación y Producción (CIP - La Raya), Universidad Nacional del Altiplano, Puno, were processed by the sedimentation and flotation technique in saturated sugar solution to detect oocysts and by the McMaster method to determine oocysts per gram (OPG) of fecal sample. Eimeria spp were present in 418 (87.5%) of the samples with a median of 4500 OPGH (CI of 7,534 and range 50-1,202,400). The most frequent species were E. lamae (60.4%), E. macusaniensis (50.4%), E. alpacae (45.6%), E. punoensis (30%), and E. ivitaensis (6.24%). Parasite load increased with age, 50% of 24 samples at 1-30 days were positive with an average load of 3825 OPG, at 31-45 days 93% of 82 (median of 8700 OPGH), at 46-60 days 85% of 144 (median of 5900 OPG), at 61-75 days 94% of 183 (median of 3750 OPG) and at 76-90 days 80% of 45 with 1750 OPG. E. lamae comprised 41% of all coccidian oocysts at 1-30 days and the highest rate of infection (67%) was reached at 46-60 days, whereas E. macusaniensis was present in only 4.2% of crias at 1-30 days, but peaked (71%) at 61-75 days. Double, triple, and quadruple infections were found in 28.2, 28.2, and 11.2% of positive samples respectively. The coexistence of E. lamae with E. alpacae and, E. lamae with E. macusaniensi infection were common in double infections, whereas E. lamae, E. alpacae and E. macusaniensis were mainly found in triple infections, and E. lamae, E. alpacae, E. punoensis and E. macusaniensis in quadruple infections. The multivariate logistic regression analysis showed in alpaca crias aged 61-75 days represent a risk factor for Eimeria spp, infection (OR:12.8, IC 95% 4.5 – 36.1 ; p< 0.05). Palabras llave : eimeriosis ; crias ; alpacas ; eimeria co-infections ; E. lamae ; E. macusaniensis ; risk factor.

Mots clés : Alpacas - Enfermedades Alpacas - Cría - Perú - Puno (Dpto.) Eimeria

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Page publiée le 11 mars 2016, mise à jour le 3 juillet 2018