Efecto de “plectranthus amboinicus” en los parámetros de la canal y visceral de pollos cobb 500

Abstract

he present experimental work was carried out in the experimental farm "Santa Inés" in the Faculty of Agricultural Sciences of the Technical University of Machala, in the province of El Oro, Ecuador. With the objective of evaluating the effect of the inclusion of the ground dehydrated Plectranthus amboinicus on the parameters of the carcass and at the visceral level of the Cobb 500 chickens. For which 240 Cobb 500 mixed chicks of 1 day of age were used, in a design completely random (DCA), following the rules established in the general guide of Voluntary Character, on the Adoption and certification of Good Poultry Practices, providing the birds with adequate food, hydration, temperature and humidity. Managing a basic vaccination schedule appropriate to the area, consisting of vaccines; Gumboro “Cepa Intermedia” and New Castle “Cepa La Sota”, with their respective reinforcements. The food was formulated in an artisanal way, using raw materials from the “Balmar” company. 6 treatments and 4 replications with 10 chicks were implemented in each experimental unit. The first treatment (T1 or control) incorporates antibiotics as growth promoter and coccidiostat in the chicken balance, the second treatment (T2) adds 0.25% of dehydrated P. amboinicus to replace the APC, the third treatment (T3) 0.50% of P. amboinicus is added, the fourth treatment (T4); 0.75%, the fifth treatment (T5); 1% of the dehydrated, and the sixth treatment (T6) presents 0.1% of the ground dehydrated stems of P. amboinicus. The variables studied were the following: Antemortem weight (g), Bleeding weight (g), Plucking weight (g), Gutted weight (g), Carcass yield (%), Breast weight (g), Thigh weight ( g), Thigh weight (g), Shoulder weight (g), Head weight (g), Neck weight (g), Leg weight (g), Wing weight (g), Heart weight (g), Spleen weight (g) , Liver weight (g), Gizzard weight (g), Intestines weight (g), Gizzard fat weight (g) and Abdominal fat thickness (cm). Data collected on day 35 of rearing, time in which the experiment is concluded with the sacrifice of 48 birds, 2 chickens from each replica (8 per treatment). The data collected was analyzed with the statistical program Statgraphics Centurión XV.I.®, using Anova of one factor, after establishing the assumption of Normality and Homogeneity, for the data that were not adjusted, the Kruskal-Wallis test was used, establishing the differences. To establish the differences and confidence intervals, Fisher's least significant difference (LSD) procedure was used with a 95.0% confidence level. The results obtained indicate a positive effect on the carcass and at the visceral level, when compared with the control. The inclusion of 1% oreganon presented better weights antemortem, shattering, plucking, carcass, thighs, thighs and breast. But when analyzing them in percentages, with respect to antemortem weight, it is observed that the inclusion of leaves and stem of oreganon gives good results at the carcass and visceral level, when compared with antibiotic and coccidiostatic feeding in broilers. Providing us with a natural, low-cost and effective alternative to the implementation of antibiotics such as APC.