The purpose of this study was to evaluate the effect of mineral block supplementation on the productive performance of guinea pigs in a forage-based rearing system under the Peruvian Central Coastal conditions. Thirty two 15-day weaned, male, Peru breed guinea pigs were randomly assigned to eight rearing boxes. A completely random design with two treatments and four replications was used in the study. Treatments were T0 (feeding with maize forage) and T1 (as T0 plus free access to blocks containing macro and microminerals). Body weight gain, feed intake, feed conversion and the economic merit were evaluated. There was statistical difference between treatments on body weight gain (T0: 358.8 and T1: 476.7 g) and feed conversion index (T0: 6.9 and T1: 5.5) (p<0.05), but without statistical difference on feed intake. It was 9% cheaper to produce 100 g body weight of guinea pig using miner...

El objetivo del presente estudio fue evaluar el efecto de la suplementación con bloques minerales sobre los parámetros productivos en cuyes de engorde alimentados con maíz chala en condiciones de la costa central de Lima, Perú. Se emplearon 32 cuyes machos, recién destetados, de la raza Perú, distribuidos en ocho pozas de crianza. Se empleó un diseño completamente al azar con dos tratamientos con cuatro repeticiones (las pozas). Los tratamientos fueron T0 [alimentación con forraje (maíz chala)] y T1 (alimentación con forraje y suplementación con bloques conteniendo macro y microminerales). Se evaluó ganancia de peso, consumo de alimento, conversión alimenticia y mérito económico a las 12 semanas del estudio. Se encontró diferencia significativa en ganancia de peso (T0: 358.8 y T1: 476.7 g) y en conversión alimenticia (T0: 6.9 y T1: 5.5) (p<0.05), pero no hubo diferen...

The objective of the present study was to determine the seroprevalence ofLeptospira spp in two sheep farms in Puno, Peru. Blood samples (n=100) were collectedfrom March to May 2006 at the ILLPA Experminental Research Farm of INIA and theAsiruni farm. The samples were processed using the microscopic agglutinationserological test. The total prevalence was 57%, without differences between farms.

The objective of the study was to evaluate the effect of the supplementation of organic acids (AO) on the productive parameters of guinea pigs (Cavia porcellus). Eighty male guinea pigs were randomly distributed in 20 experimental units, and these randomly assigned to five treatments: T1: Control (basal diet), T2: Growth Promoter Antibiotic (APC) (basal diet plus 200 ppm Zinc-Bacitracine), T3, T4, and T5: Organic acids (AO) (basal diet plus 100, 200 or 300 ppm respectively, of a mixture of acetic, lactic, and propionic acid in equal proportions). The basal diet was composed of wheat bran and fodder (rye grass plus clover). The animals were exposed to the treatments over 10 weeks. Body weight gain, dry matter intake, and feed conversion ratio (ICA) were evaluated. Significant quadratic response patterns to the AO were observed in body weight gain and ICA (p<0.035 and p<0.005 respect...

El estudio tuvo como objetivo evaluar el efecto de los manano-oligosacáridos (MOS)sobre la ganancia de peso vivo, consumo de alimento y conversión alimenticia de cuyes (Cavia porcellus) durante la fase de engorde. Se distribuyeron 75 cuyes machos de 28 ±3 días de edad en tres tratamientos aplicados como aditivos a una dieta basal: (a) Control(sin aditivo), (b) Antibiótico Promotor del Crecimiento (APC) (aditivo Zn-Bacitracina, 0.1g/kg), y (c) MOS ((aditivo manano-oligosacárido, 0.5 g/kg). El periodo de aplicación de tratamientos y observaciones experimentales fue de seis semanas. No se detectaron efectos significativos de los tratamientos sobre ninguna de las variables evaluadas.

The objective of the study was to evaluate the effect of the supplementation of organic acids (AO) on the productive parameters of guinea pigs (Cavia porcellus). Eighty male guinea pigs were randomly distributed in 20 experimental units, and these randomly assigned to five treatments: T1: Control (basal diet), T2: Growth Promoter Antibiotic (APC) (basal diet plus 200 ppm Zinc-Bacitracine), T3, T4, and T5: Organic acids (AO) (basal diet plus 100, 200 or 300 ppm respectively, of a mixture of acetic, lactic, and propionic acid in equal proportions). The basal diet was composed of wheat bran and fodder (rye grass plus clover). The animals were exposed to the treatments over 10 weeks. Body weight gain, dry matter intake, and feed conversion ratio (ICA) were evaluated. Significant quadratic response patterns to the AO were observed in body weight gain and ICA (p<0.035 and p<0.005 respect...

The aim of this study was to evaluate the effect of supplementing a probiotic strainisolated from guinea pig intestinal microbiota on its performance during the growing andfattening period. A total of 80 male guinea pigs of one day old were distributed in 40experimental units. Five treatments with eight replicates per treatment were used: T1, T2,and T3 received 100, 150 and 200 ml of probiotic respectively, and T4 y T5 were thepositive and negative controls respectively. Dry matter intake (DMI), body weight gain,feed conversion ratio (FCR) and carcass yield were evaluated. T2 showed the lowestDMI (2564 g) and FCR (3.90) whereas T5 had the highest DMI (3293 g) and FCR (5.04).Body weight gain and weight and carcass yield were not affected by the probiotic. Thedietary inclusion of probiotic strains from guinea pig intestinal microbiota significantlyaffect (p<0.05) feed conversion ratio i...

El objetivo del presente estudio fue evaluar el efecto de la suplementación de una cepa probiótica aislada de la microbiota intestinal del cuy sobre sus parámetros productivos.Se utilizaron 80 cuyes machos desde el primer día de edad, distribuidos en 40 unidades experimentales. Se emplearon cinco tratamientos con ocho repeticiones por tratamiento: T1, T2 y T3 recibieron 100, 150 y 200 ml de probiótico, respectivamente, y T4 y T5 fueron los controles positivo y negativo, respectivamente. Se evaluó el consumo de materia seca, ganancia de peso, índice de conversión alimenticia (ICA) y rendimiento de carcasa. T2 presentó el menor consumo de materia seca (2564 g) y el menor ICA (3.90) y T5 el mayor consumo (3293 g) y el mayor ICA (5.04). La ganancia de peso y el peso y rendimiento de carcasa no se vieron afectados por el probiótico. La inclusión en la dieta de cepas probióticas pr...