Publicación:

Efectos del uso sinérgico de eubióticos sobre los parámetros productivos y alométricos en pollos de engorde de la línea ross ap.

Resumen

Currently, eubiotics are postulated as a potential replacement alternative to antibiotics used as subtherapeutics, as growth promoters. Although multiple studies have demonstrated the beneficial effect of eubiotics on the productive and allometric parameters of broilers, the combined use of eubiotics has been little evaluated, and their synergistic effect is unknown. The objective of the present study was to evaluate the effect of the synergistic use of eubiotics on productive and allometric parameters in broilers of the Ross AP line. The study was carried out during the month of March 2020 in the experimental farm of Italcol S.A., located in the municipality of Piedecuesta, Santander, at an altitude of 1005 meters above sea level. A total of 1400 animals were analyzed through a completely randomized design, evaluating seven treatments (treatment 1 = base diet + pigment + phytase, treatment 2 = base diet + pigment + phytase + antibiotic growth promoter, treatment 3 = base diet + pigment + phytase + natural extract + probiotic + prebiotic, treatment 4 = base diet + pigment + phytase + natural extract + probiotic + medium chain fatty acid, treatment 5 = base diet + pigment + pigment + phytase + probiotic + prebiotic + medium chain fatty acid, treatment 6 = base diet + pigment + phytase + natural extract + prebiotic + medium chain fatty acid and treatment 7 = base diet + pigment + phytase + prebiotic extract + probiotic + medium chain fatty acid), with eight repetitions of 25 animals for each treatment. During the development of the trial, the measurement of productive and allometric parameters at days 7, 14, 21 and 35 was taken into account. Additionally, an analysis of economic productivity in each of the treatments was carried out at day 35, taking into account the commercial values reported at the end of 2020. In general, significant differences (P<0.05) were observed in the following productive parameters: average weight per bird at day 7, 14, 21, 28 and 35; total consumption per pen at day 14, 21 and 28; accumulated consumption per bird at day 21, 28 and 35; average consumption per bird at day 21, 28 and 35; mortality-adjusted conversion at day 21, 28 and 35; VPI at day 7, 21, and 28 and IEE, with the best values in treatments 5, 6 and 6 at day 7, 21 and 28. Regarding the allometric parameters of the carcass at day 35, significant differences (P<0.05) were observed in the following items: bird weight with viscera and feathers, bird weight without viscera and feathers, breast weight, wing weight, rib weight and tarsus weight. The highest economic productivity was obtained in treatments 6 and 7, which represents a difference of 2939.14 and 3676.91 USD per 10000 animals, compared to treatment 1, respectively. In conclusion, it was determined that the best productive and allometric parameters were presented in the animals that consumed the treatments containing prebiotics in their formulation, for this reason the addition of these compounds should be considered as a safe nutritional alternative to improve the synergic effect with other eubiotics, and increase the efficiency of the productive systems.