A study was conducted to determine the effects of flaxseed supplementation on performance, carcass traits, and hindleg fatty acid composition of guinea pigs. Sixty male and female weaned guinea pigs (1 month old, five animals/cage) were blocked by sex and bodyweight and randomly fed 0 (control) or 100 g/kg flaxseed concentrate diets (15 g/animal) plus ad libitum fresh alfalfa for 30 days. Results showed that flaxseed supplementation had no influence on animal performance. However, final body weight (P = 0.035), total feed intake (P = 0.019), and body weight gain (P < 0.001) were higher in male than female guinea pigs. Similar results were also observed for carcass composition (i.e., hot, chilled, and reference carcass weights). Inclusion of flaxseed reduced saturated (P < 0.001), mono-unsaturated (P = 0.004), and increased (P < 0.001) polyunsaturated (PUFA) fatty ...

El estudio tuvo como objetivo establecer una práctica de mejoramiento genético decuyes basado en el outcrossing y selección por mérito genético en el Centro de Produc-ción de Genética Superior (CENPROGEN-SUP), ubicado en el valle de Condebamba,región Cajamarca, Perú. Los progenitores de los cuyes evaluados procedieron de losvalles interandinos de Cajamarca (cuyes FICP) y de Condebamba (cuyes Mangallana ycuyes Cholocal). El crecimiento de la descendencia de los cuatro cruces se evalúo bajolas mismas condiciones de manejo y alimentación. Se trabajó con 80 cuyes machoscruzados recién destetados (outcross) y seleccionados a partir de los cruzamientos demachos Mangallana con hembras FICP puras (MFp), machos Mangallana con hembrasFICP cruzadas (MFc), machos FICP puros con hembras Cholocal (FpC)y machos FICPcruzados con hembras Mangallana (FcM). En general, el cruce MFp obtuvo el m...

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 characteristic...