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Effect of Mentha spicata L. Infusión on the productive performance and organoleptic characteristics of Cobb 500 broilers

Abstract:

The objective of this research was evaluate the effect of Mentha spicata L. infusion on the productive performance and organoleptic characteristics of Cobb 500 broilers. The management, biosecurity and welfare of birds for open houses systems were followed using a completely random design (CRD). In order to evaluate treatments effects during 35 days, 200 1-day-old mixed chickens were distributed in five treatments, with four réplicas, of 10 birds each in the following groups: T1 (control), T2 (M. spicata infusion at 10%), T3 (M. spicata infusion at 20%), T4 (M. spicata infusion at 30%) and T5 (M. spicata infusion at 40%). The variables studied were broilers productives performance, carcass weight, abdominal fat and organoleptic characteristics. The data was processed using statistical program Statgraphics Centurión XV.I, performing a multivariate analysis of variance and determining the factors with effect, and ANOVA of productive variables per week; contingency tables were prepared with organoleptic indicators data to determine differences (Chi-square test). Results show no effect on productive parameters up to 30% per liter because a decrease in feed consumption in the slaugther week for T5 (40% of infusion) which indicate a limit of infusion use; the principal effects on infusion M. spicata L was on abdominal fat which was lower thickness in T4 (30%) and T5 (40%) maybe due to the presence of flavonoids in the mint plant, which have a positive effect on lipid metabolism, resulting in a lean product. Flavor, tenderness and juiciness showed a favorable acceptance for meat of animals recibing the infusion treatements in relation to the control group due to the tendency of the majority of the Ecuador population to consume products with markables organoleptics characteristiques coming from animals raised in tradicional form.