The study aimed to establish a practice of genetic improvement of guinea pigs based on outcrossing and selection by genetic merit at the Superior Genetics Production Centre (CENPROGEN-SUP), located in the Condebamba valley, Cajamarca region, Peru. The parents of the guinea pigs evaluated came from the inter-Andean valleys of Cajamarca (FICP guinea pigs) and Condebamba (Mangallana guinea pigs and Cholocal guinea pigs). The growth of the offspring of the four crosses was evaluated under the same management and feeding conditions. A total of 80 recently weaned crossbred male guinea pigs (outcross) and selected from the crosses of Mangallana males with pure FICP females (MFp), Mangallana males with crossbred FICP females (MFc), pure FICP males with Cholocal females (FpC) and FICP males crossed with Mangallana females (FcM) were used in the study. In general, the MFp cross obtained the highes...

A study was carried out to determine the effects of dietary electrolyte balance (BED) on the productive performance, carcass characteristics and blood metabolites of guinea pig in an experimental farm in Cajamarca, Peru. In total, 150 male guinea pigs distributed in five treatments with five levels of BED: 100, 200, 300, 400 and 500 mEq/kg. Each treatment had six repetitions and each repetition with five guinea pigs/pen. The guinea pigs consumed concentrated feed for 42 days. At the end of the experimental period, six guinea pigs per treatment were slaughtered to determine the carcass yield, relative weights of the viscera and concentration of blood metabolites. Differences (p<0.05) were found in final body weight, body weight gain, and feed conversion index in favour of guinea pigs with BED of 300 mEq/kg. There were no significant differences between treatments in carcass characteris...

A study was carried out to determine the effects of dietary electrolyte balance (BED) on the productive performance, carcass characteristics and blood metabolites of guinea pig in an experimental farm in Cajamarca, Peru. In total, 150 male guinea pigs distributed in five treatments with five levels of BED: 100, 200, 300, 400 and 500 mEq/kg. Each treatment had six repetitions and each repetition with five guinea pigs/pen. The guinea pigs consumed concentrated feed for 42 days. At the end of the experimental period, six guinea pigs per treatment were slaughtered to determine the carcass yield, relative weights of the viscera and concentration of blood metabolites. Differences (p<0.05) were found in final body weight, body weight gain, and feed conversion index in favour of guinea pigs with BED of 300 mEq/kg. There were no significant differences between treatments in carcass characteris...

Veintisiete lechones Yorkshire x Duroc de veintiocho días de edad fueron alimentados con una de las tres dietas experimentales que consistían en una dieta basal (DB), la dieta basal suplementada con 50 mg de extracto de Macleaya cordata por kg de dieta (DB-EMC) y la dieta basal suplementada con 50 g de bacitracina de zinc por kg de dieta (DB-B) durante un período de cinco semanas. En comparación de los animales que recibieron las dietas suplementadas con extracto de Macleaya cordata (EMC) y bacitracina, los cerdos alimentados con la dieta basal mostraron una menor ganancia media diaria (GMD) y una conversión alimenticia más pobre. En general, el rendimiento del crecimiento y el peso corporal final en los lechones DB-EMC y DB-B fueron mejores que el de los lechones DB (p˂0,05). En las semanas 1, 2 y 5, la GMD fue mayor en comparación con DB (p˂0,05). La incidencia de diarreas cam...

Veintisiete lechones Yorkshire x Duroc de veintiocho días de edad fueron alimentados con una de las tres dietas experimentales que consistían en una dieta basal (DB), la dieta basal suplementada con 50 mg de extracto de Macleaya cordata por kg de dieta (DB-EMC) y la dieta basal suplementada con 50 g de bacitracina de zinc por kg de dieta (DB-B) durante un período de cinco semanas. En comparación de los animales que recibieron las dietas suplementadas con extracto de Macleaya cordata (EMC) y bacitracina, los cerdos alimentados con la dieta basal mostraron una menor ganancia media diaria (GMD) y una conversión alimenticia más pobre. En general, el rendimiento del crecimiento y el peso corporal final en los lechones DB-EMC y DB-B fueron mejores que el de los lechones DB (p˂0,05). En las semanas 1, 2 y 5, la GMD fue mayor en comparación con DB (p˂0,05). La incidencia de diarreas cam...