Evaluación productiva de pollitas criollas (Araucana) en la etapa de levante suplementadas con diferentes niveles de balanceado comercial.

Abstract

The objective was to evaluate the productive behavior of Araucana line pullets from 12 to 24 weeks of age supplemented with different levels of comercial feed 15,30 and 45% over the base diet (cracked corn), the chemical composition of the experimental diets was determined, and the cost/benefit of each treatment was studied; for this study, a completely randomized design was used with three treatments and a control treatment with 5 replicates each, each replicates consisting of 25 pullets, giving a total of 500 birds for 120 days. Data were collected daily employing records to obtain the results of the production variables. For the statistical analysis, an analysis of variance (ADEVA) was performed, the separation of means with Tukey with probability (P<0,05) and if the variables were significant, correlation and regression analysis was performed. Significant differences were reported, being the best treatment with 45% inclusion of comercial feed (T4), for the following productive parameters: final weight 1436,22 g, weight gain 574,45 g, weight gain 6,84 g/day, protein intake 9,82 g/day and energy intake 0,19 Mcal/day. Regarding feed conversion 3,18 and feed consumption 62,74 g/day, treatment T2 (15% inclusion of commercial feed) presented better values. The treatment with the best benefit/cost was T4 with 1,18 USD compared to T1, T2 and T3 with 1,00 USD, 1,04 USD and 1,09 USD respectively. It is concluded that when using commercial feed, the best treatment obtained was T4 (45% inclusion of commercial feed). The use of commercial feed as a base diet in backyard layer production systems is recommended.