The aim of this study was to evaluate the non-linear Gompertz, logistic, Von Bertalanffi and Richards models to find the model that best describes the growth of early culling guinea pigs. The research was carried out in a commercial farm of Peru breed guinea pigs located in the province of Huaura, Peru. Ten males and 12 females were used, which were periodically weighed from birth to 69 days. The feeding was basically with green fodder. The degree of adjustment of the non-linear models of the weight and age of the animals was evaluated through the mean square of the error (CME) and the Akaike (AIC) and Bayesian (BIC) criteria. The logistic non-linear model was the one that best described the growth of the guinea pigs fed with green forage and allowed the elaboration of the growth standard for early culling.

Objetivos: Determinar el grado de aceptabilidad del consumidor de la salchicha huachana. Métodos: Se elaboró salchicha con dos tipos de carne de cerdo, comercial y criollo. Se realizó la prueba sensorial discriminativa con un cuestionario en escala de Likert sobre las características sensoriales. Se consideró la opinión de 10 jueces entrenados. Los datos fueron analizados mediante la prueba de Rangos con Signo de Wilcoxon. Resultados: En la característica apariencia no existe diferencia significativa entre los dos tipos de salchicha (p>0,05). En las características de intensidad de sabor, sabor, intensidad de jugosidad, jugosidad y aceptabilidad existieron diferencias altamente significativas (p<0,01), mientras que en la intensidad de suavidad y la suavidad sólo existieron diferencias significativas (p<0,05) a favor de la salchicha elaborada con carne de cerdo criollo. Conclusio...

The intensive use of growth-promoting antibiotics (APC) has led to bacterial resistance with harmful effects on health, in this situation it is necessary to look for alternative products, such as phyt1ogenic products. The objective of the research was to evaluate the effect of garlic and onion flour in the diet on productive performance and batch uniformity in broilers. 150 male beef chickens of the Cobb 500 line were used. The broilers were randomly distributed into three groups with five replications and each replication with ten chickens. The treatments were: T0: Negative control, without APC; T1: Positive control, with APC (Enramycin 8%); T2: Garlic flour 0.75% + onion 0.75%. The productive performance variables were: live weight, feed consumption, feed conversion and batch uniformity. The analysis of variance of a completely randomized design (DCA) and the Tukey test were used to ev...