Efecto de la inclusión del deshidratado molido de plectranthus amboinicus en la bioquímica sanguínea en alimento de pollos cobb 500.

Abstract

The present research work was carried out in an open shed of the "Santa Inés" Farm located in the Faculty of Agricultural Sciences of the Technical University of Machala, province of El Oro, Machala, respecting the biosecurity measures applied for this type of systems. The objective of the research was to evaluate the effect of the inclusion of ground dehydrated Plectranthus amboinicus in the feed, as a natural additive, on the blood biochemistry of Cobb 500 broilers. The research was of the experimental type applying a Completely Randomized Design (CRD) to a total of 240 mixed broilers of the Cobb 500 line, in which 6 treatments with 4 replicates each were used and 10 birds were placed in them. In the first treatment (T1 or control), Antibiotic Growth Promoter (APC) was included in the feed, in T2, T3, T4, T5 APC was replaced by dehydrated oreganon leaves at 0.25%, 0.50%, 0.75% and 1% respectively, and T6 incorporated dehydrated P. amboinicus stem at 0.10% to replace APC in the feed. The birds were managed under certain hygiene standards, providing them with controlled feeding and drinking under certain conditions, in addition to maintaining a good environment and temperature, litter control, among others, managing a preventive vaccination schedule in which Gumboro intermediate strain and New Castle La Sota strain vaccines were used, plus their revaccination in the drinking water. Weights were evaluated weekly in grams, recording data and procedures performed in the action. At day 35, the animals were slaughtered, chosen at random, to obtain the different samples, by direct blood collection after cutting the jugular vein, after discarding the first jet, resting in red cap tubes and ice, the blood samples were taken from males and females for each experimental unit, obtaining a total of 48 samples to perform the blood biochemistry. The variables measured were: total cholesterol, high density lipoproteins (HDL), triglycerides, low density lipoproteins (LDL), very low density lipoproteins (VLDL) and total proteins. Statistical evaluation was performed using Statgraphics Centurion XV.I.®, applying an analysis for one factor (ANOVA) to identify significant differences between treatments and Fisher's multiple comparison procedure (LSD) with a 95.0% confidence level was used to establish differences between means. The results indicate that the effect of the inclusion of ground dehydrated oreganon (P. amboinicus) stems and leaves in the balanced feed of Cobb 500 mixed broilers, both for triglycerides and very low density lipoproteins (VLDL), is positive, due to the fact that the higher the percentage of dehydrated leaf and stem P. amboinicus, the lower the level of VLDL and Triglycerides, which contributes to reduce the level of fattening of the chickens, preventing cardiovascular diseases.