"Efectos del probiotico Saccharomyces Cerevisiae sobre los parámetros productivos en pollos de engorde Ross 308 en Portoviejo-Manabi-Ecuador".

Abstract

This research was carried out in the production area of the Faculty of Veterinary Science of the Technical University of Manabi. it is performed in order to test the diets used in the probiotic Saccharomyces cerevisiae, the assay was performed using 200 experimental units (sexed), divided into three treatments and a control group each with 50 broilers, each of them comprising repetitions (5 per treatment) in which each repetition consisted of 10 experimental units used diet was similar for all chickens until the second week (0-7 days). From day 8 chicks were divided them into each of the study treatments with their repetitions (control, T1, T2 and T3), they proceeded to include the probiotic food diets in treatment groups. The control group (T0) used 0% of Saccharomyces cerevisiae, treatment (T1) used 0.20% Treatment 2 (T2) used 0.30% and finally treatment 3 (T3) of Saccharomyces cerevisiae 0.40%. The work was conducted field lasted for 42 days with 35 days being the first treatment seven days a period of adaptation of the chickens, the same that began December 3, 2012 until January 12, 2013, the adaptation period was 03 to December 10, 2012. All these treatment and control groups were handled in the same conditions. For statistical analysis we used ANOVA and Tukey test of significance 0.05%, highly significant differences were found in the variable feed intake of the second to the sixth week P = < 0.01%, whereas the treatment T1 (0, 20%) was the least consumed food in the third, fifth and sixth weeks, T2 (0.30%) in the second week and witness in the fourth week while in the other variables evaluated and studied show no difference significant treatment P = > 0.05%, the results obtained in the final phase the best weight gain at six weeks he got the Witness (516.09 ± 103.61.) (P = > 0.05%), while the T1 group (0.20%) (455.39 ± 170.65) gained less weight gain (2261). The feed conversion (P = > 0.05%) Control group presenting a lower rate of CA (1.72), while the group T3 was a higher rate of CA (2:10). In regards to the variables of slaughter, the carcass yield higher (P = 0.36) obtained as T3 treatment (75.90%), but between the treatment groups was the most relevant for the control 6 group (73.49%) while lower performance than I got the T1 (67.195%). The lowest percentage of reduction (P = > 0.05) won the T3 group (24.10%), while the T1 group (32.81%) had the highest percentage of shrinkage. Breast yield to the channel (P = > 0.05) was higher T2 group (37.23%) while the lowest carcass yield was shown by Control group (35.05%). In the performance of thigh (P = > 0.05) T3 group (14.88%) had the lowest yield, while higher-performance earned him the T1 group (17.81%), excelled in this variable between study treatments T2 (17.57%). and finally in the total abdominal fat percentage (P = > 0.05) had the highest percentage Witness group (2.15%), and the lowest percentage is obtained T3 group (1.91%). With respect to economic analysis the lowest cost per treatment was awarded to the group T1 (179.85 dollars), while the higher-cost investment was the Control group (203.24 dollars), the least cost supply (from day 0 to 42) was awarded to the group T1 ($ 117.59) and the Control group had the highest feed cost ($ 140.96). The more useful the group had T1 (45.31dólares) while the Control group scored lower earnings (27.55 dollars). The best cost-benefit it obtained in the group T1 (25.19 cents. Dollar), and the lowest cost-benefit what was the Control group (13.56 cents. Dollar).