The effect of feed supplementation with barley meal and mineral block on body weight gain, feed intake, feed conversion index, slaughter age, production cost and profit/cost ratio was evaluated in guinea pigs fed with alfalfa. A total of 250 male weaned animals were used in a completely randomized block design with a 2x2 factorial arrangement (barley meal x mineral block) and one additional treatment for contrast (balanced diet).Barley meal supplementation significantly improved (p<0.05) body weight gain, feed intake, feed conversion index, benefit cost ratio and decreased slaughter age while mineral block supplementation only decreased slaughter age (p<0.05). On the other hand,plain forage without supplements and forage plus barley meal showed the best economic results.

The effect of feed supplementation with barley meal and mineral block on body weight gain, feed intake, feed conversion index, slaughter age, production cost and profit/cost ratio was evaluated in guinea pigs fed with alfalfa. A total of 250 male weaned animals were used in a completely randomized block design with a 2x2 factorial arrangement (barley meal x mineral block) and one additional treatment for contrast (balanced diet).Barley meal supplementation significantly improved (p<0.05) body weight gain, feed intake, feed conversion index, benefit cost ratio and decreased slaughter age while mineral block supplementation only decreased slaughter age (p<0.05). On the other hand,plain forage without supplements and forage plus barley meal showed the best economic results.

El estudio tuvo como objetivo determinar indicadores demográficos de la población de canes y gatos domésticos con dueño en asentamientos humanos del distrito de Ventanilla, Callao (Perú). Se realizó un muestreo por conglomerado para seleccionar los grupos poblacionales y un muestreo estratificado y sistemático para seleccionar las viviendas. La información fue recolectada mediante una encuesta. Se calcularon las características demográficas de la tenencia de canes y gatos, y la relación can:persona y gato:persona. El 61.9 y 40.0% de las viviendas poseían canes y gatos, respectivamente. El número de mascotas por vivienda fue de 1.8 para ambas especies. El número de crías en los canes fue de 4.3 y en gatos de 3.1. La tasa de supervivencia estimada de las crías fue de 56.2 ± 3.0% en canes y de 66.4 ± 3.9% en gatos. La esperanza de vida estimada fue de 4.21 ± 0.44 años en...

The study aimed to determine demographic indicators of the population of domestic dogs and cats with owner in human settlements in the district of Ventanilla, Callao (Peru). A cluster sampling was performed to select the population groups and a stratified and systematic sampling was used to select the dwellings. The information was collected through a survey. The demographic characteristics of dogs and cats, and the relation dog:person and cat:person was calculated. In total, 61.9 and 40.0% of the houses owned dogs and cats, respectively. The number of pets per household was 1.8 in both species. The number of offspring in dogs was 4.3 and in cats was 3.1. The estimated survival rate was 56.2 ± 3.0% for puppies and 66.4 ± 3.9% for kittens. The estimated life expectancy was 4.21 ± 0.44 years in dogs and 2.64 ± 0.46 years in cats. It was estimated that there were 1 dog per 3.98 persons ...